CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available" lang="en" dir="ltr"> <head> <meta charset="UTF-8"> <title>Talk:Minute and second of arc - Wikipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )enwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy", "wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"6cbdb0bd-077c-4d9a-b3f3-3c5111b93cff","wgCanonicalNamespace":"Talk","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":1,"wgPageName":"Talk:Minute_and_second_of_arc","wgTitle":"Minute and second of arc","wgCurRevisionId":1193931374,"wgRevisionId":1193931374,"wgArticleId":68711,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["All Wikipedia vital articles","Start-Class level-5 vital articles","Wikipedia level-5 vital articles in Physical sciences","Start-Class vital articles in Physical sciences","C-Class articles with conflicting quality ratings","C-Class Astronomy articles","High-importance Astronomy articles","C-Class Astronomy articles of High-importance","Start-Class Firearms articles","Low-importance Firearms articles","WikiProject Firearms articles"],"wgPageViewLanguage" :"en","wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"Talk:Minute_and_second_of_arc","wgRelevantArticleId":68711,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgFlaggedRevsParams":{"tags":{"status":{"levels":1}}},"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":false,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":30000,"wgRelatedArticlesCompat":[],"wgCentralAuthMobileDomain":false,"wgEditSubmitButtonLabelPublish":true,"wgDiscussionToolsFeaturesEnabled":{"replytool":true,"newtopictool":true,"sourcemodetoolbar":true,"topicsubscription":false,"autotopicsub":false,"visualenhancements": false,"visualenhancements_reply":false,"visualenhancements_pageframe":false},"wgDiscussionToolsFallbackEditMode":"source","wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":true,"wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":false,"wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles":"ready","ext.discussionTools.init.styles":"ready","oojs-ui-core.styles":"ready","oojs-ui.styles.indicators":"ready","mediawiki.widgets.styles":"ready","oojs-ui-core.icons":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles": "ready","skins.vector.icons":"ready","jquery.makeCollapsible.styles":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["ext.cite.ux-enhancements","site","mediawiki.page.ready","jquery.makeCollapsible","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.ReferenceTooltips","ext.gadget.switcher","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.discussionTools.init","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.cite.styles%7Cext.discussionTools.init.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cmediawiki.widgets.styles%7Coojs-ui-core.icons%2Cstyles%7Coojs-ui.styles.indicators%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.4"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Talk:Minute and second of arc - Wikipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//en.m.wikipedia.org/wiki/Talk:Minute_and_second_of_arc"> <link rel="alternate" type="application/x-wiki" title="Edit this page" href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipedia (en)"> <link rel="EditURI" type="application/rsd+xml" href="//en.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en"> <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="//login.wikimedia.org"> </head> <body class="ext-discussiontools-replytool-enabled ext-discussiontools-newtopictool-enabled ext-discussiontools-sourcemodetoolbar-enabled skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-1 ns-talk mw-editable page-Talk_Minute_and_second_of_arc rootpage-Talk_Minute_and_second_of_arc skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Jump to content</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Main menu" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Main menu</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Main menu</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">hide</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navigation </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z"><span>Main page</span></a></li><li id="n-contents" class="mw-list-item"><a href="/wiki/Wikipedia:Contents" title="Guides to browsing Wikipedia"><span>Contents</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Current_events" title="Articles related to current events"><span>Current events</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Special:Random" title="Visit a randomly selected article [x]" accesskey="x"><span>Random article</span></a></li><li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:About" title="Learn about Wikipedia and how it works"><span>About Wikipedia</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us" title="How to contact Wikipedia"><span>Contact us</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Contribute </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-help" class="mw-list-item"><a href="/wiki/Help:Contents" title="Guidance on how to use and edit Wikipedia"><span>Help</span></a></li><li id="n-introduction" class="mw-list-item"><a href="/wiki/Help:Introduction" title="Learn how to edit Wikipedia"><span>Learn to edit</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Community_portal" title="The hub for editors"><span>Community portal</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:RecentChanges" title="A list of recent changes to Wikipedia [r]" accesskey="r"><span>Recent changes</span></a></li><li id="n-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_upload_wizard" title="Add images or other media for use on Wikipedia"><span>Upload file</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Main_Page" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="The Free Encyclopedia" src="/static/images/mobile/copyright/wikipedia-tagline-en.svg" width="117" height="13" style="width: 7.3125em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Special:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Search Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia" aria-label="Search Wikipedia" autocapitalize="sentences" title="Search Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Personal tools"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Appearance" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Appearance</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en" class=""><span>Donate</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=Talk%3AMinute+and+second+of+arc" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=Talk%3AMinute+and+second+of+arc" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o" class=""><span>Log in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Log in and more options" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personal tools" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personal tools</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="User menu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en"><span>Donate</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=Talk%3AMinute+and+second+of+arc" title="You are encouraged to create an account and log in; however, it is not mandatory"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Create account</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=Talk%3AMinute+and+second+of+arc" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about edits from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-Number_of_square_arcminutes_in_a_sphere" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Number_of_square_arcminutes_in_a_sphere"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Number of square arcminutes in a sphere</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <ul id="toc-Number_of_square_arcminutes_in_a_sphere-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-from_original_article,_"Arc_of_Minute"" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#from_original_article,_"Arc_of_Minute""> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>from original article, "Arc of Minute"</span> </div> </a> <ul id="toc-from_original_article,_"Arc_of_Minute"-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-merge_arcminute_and_arcsecond_articles" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#merge_arcminute_and_arcsecond_articles"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>merge arcminute and arcsecond articles</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">4 comments</span> <ul id="toc-merge_arcminute_and_arcsecond_articles-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-other_uses_of_arcminutes_and_arcseconds" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#other_uses_of_arcminutes_and_arcseconds"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>other uses of arcminutes and arcseconds</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <ul id="toc-other_uses_of_arcminutes_and_arcseconds-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Visual_Acuity_Under_Cartography?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Visual_Acuity_Under_Cartography?"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Visual Acuity Under Cartography?</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Visual_Acuity_Under_Cartography?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Right_ascension_in_cartography" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Right_ascension_in_cartography"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Right ascension in cartography</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Right_ascension_in_cartography-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Incorrect_formula?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Incorrect_formula?"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Incorrect formula?</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <button aria-controls="toc-Incorrect_formula?-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Incorrect formula? subsection</span> </button> <ul id="toc-Incorrect_formula?-sublist" class="vector-toc-list"> <li id="toc-Different_interpretations_of_1′_at_100_yards_yield_differences_too_tiny_to_be_worth_consideration" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Different_interpretations_of_1′_at_100_yards_yield_differences_too_tiny_to_be_worth_consideration"> <div class="vector-toc-text"> <span class="vector-toc-numb">7.1</span> <span>Different interpretations of 1′ at 100 yards yield differences too tiny to be worth consideration</span> </div> </a> <ul id="toc-Different_interpretations_of_1′_at_100_yards_yield_differences_too_tiny_to_be_worth_consideration-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-This_is_incorrect?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#This_is_incorrect?"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>This is incorrect?</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">5 comments</span> <ul id="toc-This_is_incorrect?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-merged..." class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-merged..."> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>Minute of arc is standard terminology in astronomy; arcseconds not really well-merged...</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <ul id="toc-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-merged...-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Minute_of_Arc,_The_band" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Minute_of_Arc,_The_band"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>Minute of Arc, The band</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Minute_of_Arc,_The_band-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Race_Elapsed_Time" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Race_Elapsed_Time"> <div class="vector-toc-text"> <span class="vector-toc-numb">11</span> <span>Race Elapsed Time</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <ul id="toc-Race_Elapsed_Time-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Unit_conversions_valid" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Unit_conversions_valid"> <div class="vector-toc-text"> <span class="vector-toc-numb">12</span> <span>Unit conversions valid</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <ul id="toc-Unit_conversions_valid-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Merge" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Merge"> <div class="vector-toc-text"> <span class="vector-toc-numb">13</span> <span>Merge</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">2 comments</span> <ul id="toc-Merge-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Error:_Reason_for_"not_SI"" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Error:_Reason_for_"not_SI""> <div class="vector-toc-text"> <span class="vector-toc-numb">14</span> <span>Error: Reason for "not SI"</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Error:_Reason_for_"not_SI"-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Someone_please_fix_the_recursive_self-linking" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Someone_please_fix_the_recursive_self-linking"> <div class="vector-toc-text"> <span class="vector-toc-numb">15</span> <span>Someone please fix the recursive self-linking</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Someone_please_fix_the_recursive_self-linking-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Shouldn't_prad,_etc.,_be_defined_in_this_article?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Shouldn't_prad,_etc.,_be_defined_in_this_article?"> <div class="vector-toc-text"> <span class="vector-toc-numb">16</span> <span>Shouldn't prad, etc., be defined in this article?</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Shouldn't_prad,_etc.,_be_defined_in_this_article?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Table_in_"Symbols_and_abbreviations"_section_is_wrong" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Table_in_"Symbols_and_abbreviations"_section_is_wrong"> <div class="vector-toc-text"> <span class="vector-toc-numb">17</span> <span>Table in "Symbols and abbreviations" section is wrong</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Table_in_"Symbols_and_abbreviations"_section_is_wrong-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Can't_link_page_to_other_wikipedias" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Can't_link_page_to_other_wikipedias"> <div class="vector-toc-text"> <span class="vector-toc-numb">18</span> <span>Can't link page to other wikipedias</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">4 comments</span> <ul id="toc-Can't_link_page_to_other_wikipedias-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-sexagesimal_obsoletion" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#sexagesimal_obsoletion"> <div class="vector-toc-text"> <span class="vector-toc-numb">19</span> <span>sexagesimal obsoletion</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-sexagesimal_obsoletion-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Where_does_the_approximation_of_a_football_at_775m_come_from?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Where_does_the_approximation_of_a_football_at_775m_come_from?"> <div class="vector-toc-text"> <span class="vector-toc-numb">20</span> <span>Where does the approximation of a football at 775m come from?</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">7 comments</span> <ul id="toc-Where_does_the_approximation_of_a_football_at_775m_come_from?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Beware_flat-earther_misinterpretation" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Beware_flat-earther_misinterpretation"> <div class="vector-toc-text"> <span class="vector-toc-numb">21</span> <span>Beware flat-earther misinterpretation</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Beware_flat-earther_misinterpretation-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-A_Commons_file_used_on_this_page_or_its_Wikidata_item_has_been_nominated_for_deletion" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#A_Commons_file_used_on_this_page_or_its_Wikidata_item_has_been_nominated_for_deletion"> <div class="vector-toc-text"> <span class="vector-toc-numb">22</span> <span>A Commons file used on this page or its Wikidata item has been nominated for deletion</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-A_Commons_file_used_on_this_page_or_its_Wikidata_item_has_been_nominated_for_deletion-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Infobox_for_arcminute_but_not_for_arcsecond" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Infobox_for_arcminute_but_not_for_arcsecond"> <div class="vector-toc-text"> <span class="vector-toc-numb">23</span> <span>Infobox for arcminute but not for arcsecond</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Infobox_for_arcminute_but_not_for_arcsecond-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Vandalism!" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Vandalism!"> <div class="vector-toc-text"> <span class="vector-toc-numb">24</span> <span>Vandalism!</span> </div> </a> <span class="ext-discussiontools-init-sidebar-meta">1 comment</span> <ul id="toc-Vandalism!-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-namespace">Talk</span><span class="mw-page-title-separator">:</span><span class="mw-page-title-main">Minute and second of arc</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang mw-portlet-lang-icon-only" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector-empty" aria-label="This article exist only in this language. Add the article for other languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only mw-portlet-lang-heading-empty" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language mw-ui-icon-wikimedia-language"></span> <span class="vector-dropdown-label-text">Add languages</span> </label> <div class="vector-dropdown-content"> <div class="mw-portlet-empty-language-selector-body"> Page contents not supported in other languages. </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="vector-tab-noicon mw-list-item"><a href="/wiki/Minute_and_second_of_arc" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Talk:Minute_and_second_of_arc" rel="discussion" title="Discuss improvements to the content page [t]" accesskey="t"><span>Talk</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Talk:Minute_and_second_of_arc"><span>Read</span></a></li><li id="ca-edit" class="istalk vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-addsection" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=new" title="Start a new section [+]" accesskey="+"><span>Add topic</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Tools" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Tools</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Tools</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">hide</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="More options" > <div class="vector-menu-heading"> Actions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Talk:Minute_and_second_of_arc"><span>Read</span></a></li><li id="ca-more-edit" class="istalk vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-more-addsection" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=new"><span>Add topic</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=history"><span>View history</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/Talk:Minute_and_second_of_arc" title="List of all English Wikipedia pages containing links to this page [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/Talk:Minute_and_second_of_arc" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&oldid=1193931374" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FTalk%3AMinute_and_second_of_arc"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FTalk%3AMinute_and_second_of_arc"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Print/export </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=Talk%3AMinute_and_second_of_arc&action=show-download-screen" title="Download this page as a PDF file"><span>Download as PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&printable=yes" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects emptyPortlet" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r1237879475">.mw-parser-output .tmbox{margin:4px 0;border-collapse:collapse;border:1px solid #c0c090;background-color:#f8eaba;box-sizing:border-box}.mw-parser-output .tmbox.mbox-small{font-size:88%;line-height:1.25em}.mw-parser-output .tmbox-speedy{border:2px solid #b32424;background-color:#fee7e6}.mw-parser-output .tmbox-delete{border:2px solid #b32424}.mw-parser-output .tmbox-content{border:2px solid #f28500}.mw-parser-output .tmbox-style{border:2px solid #fc3}.mw-parser-output .tmbox-move{border:2px solid #9932cc}.mw-parser-output .tmbox .mbox-text{border:none;padding:0.25em 0.9em;width:100%}.mw-parser-output .tmbox .mbox-image{border:none;padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .tmbox .mbox-imageright{border:none;padding:2px 0.9em 2px 0;text-align:center}.mw-parser-output .tmbox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .tmbox .mbox-invalid-type{text-align:center}@media(min-width:720px){.mw-parser-output .tmbox{margin:4px 10%}.mw-parser-output .tmbox.mbox-small{clear:right;float:right;margin:4px 0 4px 1em;width:238px}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .tmbox{background-color:#2e2505}html.skin-theme-clientpref-night .mw-parser-output .tmbox-speedy{background-color:#310402}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .tmbox{background-color:#2e2505}html.skin-theme-clientpref-os .mw-parser-output .tmbox-speedy{background-color:#310402}}body.skin--responsive .mw-parser-output table.tmbox img{max-width:none!important}</style><style data-mw-deduplicate="TemplateStyles:r1243927654">.mw-parser-output .banner-shell{border-collapse:separate;border-spacing:4px}.mw-parser-output .banner-shell-header{text-align:center;font-weight:bold}.mw-parser-output .banner-shell-inner{padding:2px 4px;background:#fffaef;color:inherit;border:1px dotted gray}@media screen{html.skin-theme-clientpref-night .mw-parser-output .banner-shell-inner{background:#2e2505}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .banner-shell-inner{background:#2e2505}}.mw-parser-output .banner-shell .tmbox{margin:2px 0;width:100%}.mw-parser-output .banner-shell .tmbox.mbox-small{line-height:1.5em;font-size:100%}.mw-parser-output .banner-shell-inner .banner-shell-outside{display:none}@media(min-width:720px){.mw-parser-output .wpbs{width:80%}}.mw-parser-output .wpbs .assess{width:60px;text-align:center}.mw-parser-output .wpbs .banner-shell-header{border:none;padding:0.25em 0.9em 0.25em 0}.mw-parser-output .wpbs .wpb .wpb-header{display:table-row}.mw-parser-output .wpbs .wpb:not(.mw-collapsed) .wpb-header-icon a{display:none}</style><table role="presentation" class="tmbox tmbox-notice banner-shell wpbs mw-collapsible"><tbody><tr><td class="assess"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Symbol_start_class.svg" class="mw-file-description" title="Start-Class article"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/a/a4/Symbol_start_class.svg/35px-Symbol_start_class.svg.png" decoding="async" width="35" height="36" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/a/a4/Symbol_start_class.svg/53px-Symbol_start_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/a/a4/Symbol_start_class.svg/70px-Symbol_start_class.svg.png 2x" data-file-width="180" data-file-height="185"/></a></span></td><td class="banner-shell-header" style="text-align:left;font-weight:normal">This <span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/13/C%C3%ADrculos_Conc%C3%A9ntricos.svg/16px-C%C3%ADrculos_Conc%C3%A9ntricos.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/13/C%C3%ADrculos_Conc%C3%A9ntricos.svg/24px-C%C3%ADrculos_Conc%C3%A9ntricos.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/13/C%C3%ADrculos_Conc%C3%A9ntricos.svg/32px-C%C3%ADrculos_Conc%C3%A9ntricos.svg.png 2x" data-file-width="215" data-file-height="215"/></span></span> <b><a href="/wiki/Wikipedia:Vital_articles/Level/5/Physical_sciences/Basics_and_measurement#Angle" title="Wikipedia:Vital articles/Level/5/Physical sciences/Basics and measurement">level-5 vital article</a></b> is rated <b>Start-class</b> on Wikipedia's <a href="/wiki/Wikipedia:Content_assessment" title="Wikipedia:Content assessment">content assessment</a> scale.<br/>It is of interest to the following <a href="/wiki/Wikipedia:WikiProject" title="Wikipedia:WikiProject">WikiProjects</a>:</td></tr><tr><td colspan="2" class="banner-shell-inner outercollapse"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1237879475"><style data-mw-deduplicate="TemplateStyles:r1256394742">.mw-parser-output .wpb-header,.mw-parser-output .wpb-metadata,.mw-parser-output .wpb-iefix{display:none}.mw-parser-output .wpb-header-name{text-align:right;padding:0.3em 1em 0.3em 0.3em;width:50%;font-weight:bold}.mw-parser-output .wpb-header-assessment{text-align:left;width:50%;padding:0.3em}.mw-parser-output .wpb-header-combined{text-align:left;padding:0.3em 0.3em 0.3em 0;font-weight:bold}.mw-parser-output .wpb-header-bubbles{border-radius:.5em;padding:0 .3em;margin-left:0.5em;white-space:nowrap;font-weight:normal;color:black}.mw-parser-output .wpb-nested-task-force{font-weight:normal}.mw-parser-output .wpb-header-icon{width:50px;text-align:center}.mw-parser-output .wpb-category-box{background-color:#F5F5F5;border-width:1px;width:500px}.mw-parser-output .wpbs .wpb .wpb-main{background-color:#FFFAEF;padding:3px 0 3px 0.7em}.mw-parser-output .wpb .wpb-main{padding:3px 5px}.mw-parser-output .wpbs .wpb-header{background-color:#FFFAEF}.mw-parser-output .wpb-main>table{background-color:transparent;border:none;padding:0;width:100%;border-spacing:0}.mw-parser-output .wpb .wpb-image{padding:2px 0}.mw-parser-output .wpb-collapsed-head{text-align:left;padding:0.2em 2px 0.2em 0}.mw-parser-output .wpb-collapsed-notes{padding:0}.mw-parser-output .wpb-collapsed-notes>table{width:100%;background-color:transparent}.mw-parser-output .wpb .wpb-gutter{padding:2px 0 0 0}.mw-parser-output .wpbs .banner-shell-inner{background-color:#f8eaba;border:none}.mw-parser-output .wpb-table{table-layout:fixed}@media(min-width:720px){.mw-parser-output .wpb{min-width:80%}}.mw-parser-output .assess{font-weight:bold;text-align:center;white-space:nowrap;color:black}.mw-parser-output .import-top{background-color:#FFBFFF}.mw-parser-output .import-high{background-color:#FFCCFF}.mw-parser-output .import-mid{background-color:#FFD9FF}.mw-parser-output .import-low{background-color:#FFE7FF}.mw-parser-output .import-bottom{background-color:#FFEBFF}.mw-parser-output .import-na{background-color:#F5F5F5}.mw-parser-output .import-unknown{background-color:#DCDCDC}.mw-parser-output .class-fa,.mw-parser-output .class-fl,.mw-parser-output .class-fm{background-color:#BED3FF}.mw-parser-output .class-a,.mw-parser-output .class-al{background-color:#C0FFFF}.mw-parser-output .class-ga{background-color:#C0FFC0}.mw-parser-output .class-b,.mw-parser-output .class-bl{background-color:#DFFFBF}.mw-parser-output .class-c,.mw-parser-output .class-cl{background-color:#FFFFBE}.mw-parser-output .class-start{background-color:#FFDBBF}.mw-parser-output .class-stub,.mw-parser-output .class-sl{background-color:#FFC0C0}.mw-parser-output .class-list{background-color:#D2C0FF}.mw-parser-output .class-na{background-color:#F5F5F5}.mw-parser-output .class-category{background-color:#FFDB58}.mw-parser-output .class-disambig{background-color:#00FA9A}.mw-parser-output .class-draft{background-color:#E7B198}.mw-parser-output .class-file{background-color:#DDCCFF}.mw-parser-output .class-future{background-color:#B4BBFF}.mw-parser-output .class-portal{background-color:#DDB1BC}.mw-parser-output .class-project{background-color:#C0C090}.mw-parser-output .class-redirect{background-color:#C0C0C0}.mw-parser-output .class-sia{background-color:#E9DAFF}.mw-parser-output .class-user{background-color:#DDD06A}.mw-parser-output .class-template{background-color:#FBCEB1}.mw-parser-output .class-unassessed{background-color:#DCDCDC}.mw-parser-output .conflict{border:0.2em solid red}.mw-parser-output .inactive-wikiproject .wpb-header-bubbles{color:inherit}@media screen{html.skin-theme-clientpref-night .mw-parser-output .wpb-category-box{background-color:#0a0a0a}html.skin-theme-clientpref-night .mw-parser-output .wpbs .wpb .wpb-main,html.skin-theme-clientpref-night .mw-parser-output .wpbs .wpb-header{background-color:#302f2d}html.skin-theme-clientpref-night .mw-parser-output .wpbs .banner-shell-inner{background-color:#2e2505}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .wpb-category-box{background-color:#0a0a0a}html.skin-theme-clientpref-os .mw-parser-output .wpbs .wpb .wpb-main,html.skin-theme-clientpref-os .mw-parser-output .wpbs .wpb-header{background-color:#302f2d}html.skin-theme-clientpref-os .mw-parser-output .wpbs .banner-shell-inner{background-color:#2e2505}}</style><table class="tmbox tmbox-notice mw-collapsible innercollapse wpb wpb-table"><tbody><tr class="wpb-header"><td class="wpb-header-icon"><span typeof="mw:File"><a href="/wiki/File:NGC7293_(2004).jpg" class="mw-file-description"><img alt="WikiProject icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/NGC7293_%282004%29.jpg/23px-NGC7293_%282004%29.jpg" decoding="async" width="23" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/NGC7293_%282004%29.jpg/35px-NGC7293_%282004%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b1/NGC7293_%282004%29.jpg/46px-NGC7293_%282004%29.jpg 2x" data-file-width="6145" data-file-height="6623"/></a></span></td><td class="wpb-header-combined"><a href="/wiki/Wikipedia:WikiProject_Astronomy" title="Wikipedia:WikiProject Astronomy">Astronomy</a> <span class="wpb-header-bubbles class-c conflict">C‑class</span> <span class="wpb-header-bubbles import-high">High‑importance</span></td></tr><tr><td class="mbox-text wpb-main" colspan="2"><table><tbody><tr><td class="mbox-image wpb-image"><span typeof="mw:File"><a href="/wiki/File:NGC7293_(2004).jpg" class="mw-file-description"><img alt="WikiProject icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/NGC7293_%282004%29.jpg/60px-NGC7293_%282004%29.jpg" decoding="async" width="60" height="65" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/NGC7293_%282004%29.jpg/90px-NGC7293_%282004%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b1/NGC7293_%282004%29.jpg/120px-NGC7293_%282004%29.jpg 2x" data-file-width="6145" data-file-height="6623"/></a></span></td><td class="mbox-text"><style data-mw-deduplicate="TemplateStyles:r1239009302">.mw-parser-output .portalbox{padding:0;margin:0.5em 0;display:table;box-sizing:border-box;max-width:175px;list-style:none}.mw-parser-output .portalborder{border:1px solid var(--border-color-base,#a2a9b1);padding:0.1em;background:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output .portalbox-entry{display:table-row;font-size:85%;line-height:110%;height:1.9em;font-style:italic;font-weight:bold}.mw-parser-output .portalbox-image{display:table-cell;padding:0.2em;vertical-align:middle;text-align:center}.mw-parser-output .portalbox-link{display:table-cell;padding:0.2em 0.2em 0.2em 0.3em;vertical-align:middle}@media(min-width:720px){.mw-parser-output .portalleft{clear:left;float:left;margin:0.5em 1em 0.5em 0}.mw-parser-output .portalright{clear:right;float:right;margin:0.5em 0 0.5em 1em}}</style><ul role="navigation" aria-label="Portals" class="noprint portalbox portalborder portalright"> <li class="portalbox-entry"><span class="portalbox-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/00/Crab_Nebula.jpg/28px-Crab_Nebula.jpg" decoding="async" width="28" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/00/Crab_Nebula.jpg/42px-Crab_Nebula.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/00/Crab_Nebula.jpg/56px-Crab_Nebula.jpg 2x" data-file-width="3864" data-file-height="3864"/></span></span></span><span class="portalbox-link"><a href="/wiki/Portal:Astronomy" title="Portal:Astronomy">Astronomy portal</a></span></li></ul>This article is within the scope of <b><a href="/wiki/Wikipedia:WikiProject_Astronomy" title="Wikipedia:WikiProject Astronomy">WikiProject Astronomy</a></b>, which collaborates on articles related to <a href="/wiki/Astronomy" title="Astronomy">Astronomy</a> on Wikipedia.<span class="metadata wpb-metadata"><span class="wpb-project">Astronomy</span><span class="wpb-project_link">Wikipedia:WikiProject Astronomy</span><span class="wpb-banner_name">Template:WikiProject Astronomy</span><span class="wpb-assessment_cat">Astronomy articles</span></span></td><td class="mbox-empty-cell"></td></tr><tr><td class="assess class-c conflict"><a href="/wiki/Category:C-Class_Astronomy_articles" title="Category:C-Class Astronomy articles">C</a></td><td class="mbox-text" colspan="2">This article has been given a rating which conflicts with the <a href="/wiki/Wikipedia:PIQA" class="mw-redirect" title="Wikipedia:PIQA">project-independent quality rating</a> in the banner shell. Please resolve this conflict if possible.</td></tr><tr><td class="assess import-high"><a href="/wiki/Category:High-importance_Astronomy_articles" title="Category:High-importance Astronomy articles">High</a></td><td class="mbox-text" colspan="2">This article has been rated as <b>High-importance</b> on the <a href="/wiki/Wikipedia:WikiProject_Astronomy/Importance_ratings#Importance_scale" title="Wikipedia:WikiProject Astronomy/Importance ratings">project's importance scale</a>.</td></tr></tbody></table></td></tr></tbody></table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1237879475"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1256394742"><table class="tmbox tmbox-notice mw-collapsible innercollapse wpb wpb-table"><tbody><tr class="wpb-header"><td class="wpb-header-icon"><span typeof="mw:File"><a href="/wiki/File:HKUSPCOMPACT40.jpg" class="mw-file-description"><img alt="WikiProject icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/HKUSPCOMPACT40.jpg/27px-HKUSPCOMPACT40.jpg" decoding="async" width="27" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/HKUSPCOMPACT40.jpg/42px-HKUSPCOMPACT40.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1f/HKUSPCOMPACT40.jpg/55px-HKUSPCOMPACT40.jpg 2x" data-file-width="1418" data-file-height="1296"/></a></span></td><td class="wpb-header-combined"><a href="/wiki/Wikipedia:WikiProject_Firearms" title="Wikipedia:WikiProject Firearms">Firearms</a> <span class="wpb-header-bubbles import-low">Low‑importance</span></td></tr><tr><td class="mbox-text wpb-main" colspan="2"><table><tbody><tr><td class="mbox-image wpb-image"><span typeof="mw:File"><a href="/wiki/File:HKUSPCOMPACT40.jpg" class="mw-file-description"><img alt="WikiProject icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/HKUSPCOMPACT40.jpg/80px-HKUSPCOMPACT40.jpg" decoding="async" width="80" height="73" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/HKUSPCOMPACT40.jpg/120px-HKUSPCOMPACT40.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1f/HKUSPCOMPACT40.jpg/160px-HKUSPCOMPACT40.jpg 2x" data-file-width="1418" data-file-height="1296"/></a></span></td><td class="mbox-text">This article is within the scope of <b><a href="/wiki/Wikipedia:WikiProject_Firearms" title="Wikipedia:WikiProject Firearms">WikiProject Firearms</a></b>, a collaborative effort to improve the coverage of <a href="/wiki/Firearms" class="mw-redirect" title="Firearms">firearms</a> on Wikipedia. If you would like to participate, please visit the project page, where you can join the <a href="/wiki/Wikipedia_talk:WikiProject_Firearms" title="Wikipedia talk:WikiProject Firearms">discussion</a> and see a list of <a href="/wiki/Wikipedia:WikiProject_Firearms/to_do" title="Wikipedia:WikiProject Firearms/to do">open tasks</a>.<span class="metadata wpb-metadata"><span class="wpb-project">Firearms</span><span class="wpb-project_link">Wikipedia:WikiProject Firearms</span><span class="wpb-banner_name">Template:WikiProject Firearms</span><span class="wpb-assessment_cat">Firearms articles</span></span></td><td class="mbox-empty-cell"></td></tr><tr><td class="assess import-low"><a href="/wiki/Category:Low-importance_Firearms_articles" title="Category:Low-importance Firearms articles">Low</a></td><td class="mbox-text" colspan="2">This article has been rated as <b>Low-importance</b> on the <a href="/wiki/Wikipedia:WikiProject_Firearms/Assessment#Importance_scale" title="Wikipedia:WikiProject Firearms/Assessment">project's importance scale</a>.</td></tr></tbody></table></td></tr></tbody></table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1237879475"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1256394742"><table class="tmbox tmbox-notice mw-collapsible innercollapse wpb wpb-table inactive-wikiproject"><tbody><tr class="wpb-header"><td class="wpb-header-icon"><span typeof="mw:File"><a href="/wiki/File:People_icon_dead.svg" class="mw-file-description"><img alt="WikiProject icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6b/People_icon_dead.svg/25px-People_icon_dead.svg.png" decoding="async" width="25" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6b/People_icon_dead.svg/38px-People_icon_dead.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6b/People_icon_dead.svg/50px-People_icon_dead.svg.png 2x" data-file-width="100" data-file-height="100"/></a></span></td><td class="wpb-header-combined"><a href="/wiki/Wikipedia:WikiProject_Measurement" title="Wikipedia:WikiProject Measurement">Measurement</a> <span class="wpb-header-bubbles"> (<a href="/wiki/Wikipedia:INACTIVEWP" class="mw-redirect" title="Wikipedia:INACTIVEWP">defunct</a>)</span></td></tr><tr><td class="mbox-text wpb-main" colspan="2"><table><tbody><tr><td class="mbox-image wpb-image"><span typeof="mw:File"><a href="/wiki/File:People_icon_dead.svg" class="mw-file-description"><img alt="WikiProject icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6b/People_icon_dead.svg/40px-People_icon_dead.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6b/People_icon_dead.svg/60px-People_icon_dead.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6b/People_icon_dead.svg/80px-People_icon_dead.svg.png 2x" data-file-width="100" data-file-height="100"/></a></span></td><td class="mbox-text">This article is within the scope of <a href="/wiki/Wikipedia:WikiProject_Measurement" title="Wikipedia:WikiProject Measurement">WikiProject Measurement</a>, a project which is currently considered to be <b><a href="/wiki/Wikipedia:INACTIVEWP" class="mw-redirect" title="Wikipedia:INACTIVEWP">defunct</a></b>.<span class="metadata wpb-metadata"><span class="wpb-project">Measurement</span><span class="wpb-project_link">Wikipedia:WikiProject Measurement</span><span class="wpb-banner_name">Template:WikiProject Measurement</span><span class="wpb-assessment_cat">Measurement articles</span></span></td><td class="mbox-empty-cell"></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table> <meta property="mw:PageProp/toc"/> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Number_of_square_arcminutes_in_a_sphere" data-mw-thread-id="h-Number_of_square_arcminutes_in_a_sphere-2009-07-17T02:50:00.000Z"><span data-mw-comment-start="" id="h-Number_of_square_arcminutes_in_a_sphere-2009-07-17T02:50:00.000Z"></span>Number of square arcminutes in a sphere<span data-mw-comment-end="h-Number_of_square_arcminutes_in_a_sphere-2009-07-17T02:50:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=1" title="Edit section: Number of square arcminutes in a sphere"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-DeclinedShadow-2009-07-17T02:50:00.000Z-Number_of_square_arcminutes_in_a_sphere"></span>There isn’t 148,510,800 square minutes in a sphere, if it isn’t a misquotation that is perhaps something that’s only valid for the Earth’s sky. Earth is not a perfect sphere. 2πr = 60·360 = 21,600 arcminutes, r = 21,600/2π, A = 4πr^2 = 4π·(466,560,000/4π^2) = 466,560,000/π ≈ 148,510,660.498 square arcminutes. I'm fixing it, but just if anyone disagrees for some reason (since there's a source and everything for the false info). <a href="/w/index.php?title=User:DeclinedShadow&action=edit&redlink=1" class="new" title="User:DeclinedShadow (page does not exist)">User:DeclinedShadow</a> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-DeclinedShadow-2009-07-17T02:50:00.000Z-Number_of_square_arcminutes_in_a_sphere" class="ext-discussiontools-init-timestamplink">02:50, 17 July 2009 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-DeclinedShadow-2009-07-17T02:50:00.000Z-Number_of_square_arcminutes_in_a_sphere"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-DeclinedShadow-2009-07-17T02:50:00.000Z-Number_of_square_arcminutes_in_a_sphere"></span> </p><p><span data-mw-comment-start="" id="c-DeclinedShadow-2009-08-02T03:52:00.000Z-Number_of_square_arcminutes_in_a_sphere"></span>Rewrote this <i>again</i> since someone changed it back, and added some calculations. Anyone of you can just look at the <a href="/wiki/Square_degree" title="Square degree">Square degree</a> page, there's the same formula being used. <a href="/w/index.php?title=User:DeclinedShadow&action=edit&redlink=1" class="new" title="User:DeclinedShadow (page does not exist)">User:DeclinedShadow</a> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-DeclinedShadow-2009-08-02T03:52:00.000Z-Number_of_square_arcminutes_in_a_sphere" class="ext-discussiontools-init-timestamplink">03:52, 2 August 2009 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-DeclinedShadow-2009-08-02T03:52:00.000Z-Number_of_square_arcminutes_in_a_sphere"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-DeclinedShadow-2009-08-02T03:52:00.000Z-Number_of_square_arcminutes_in_a_sphere"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="from_original_article,_"Arc_of_Minute"" data-mw-thread-id="h-from_original_article,_"Arc_of_Minute""><span id="from_original_article.2C_.22Arc_of_Minute.22"></span><span data-mw-comment-start="" id="h-from_original_article,_"Arc_of_Minute""></span>from original article, "Arc of Minute"<span data-mw-comment-end="h-from_original_article,_"Arc_of_Minute""></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=2" title="Edit section: from original article, "Arc of Minute""><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>What the heck is this feature for?? Well, I'll be darned. Shouldn't this be "Minute of Arc"? </p> <dl><dd>Yes, it should be "minute of arc" or "arcminute". But I would prefer an article on <a href="/wiki/Angular_measure" class="mw-redirect" title="Angular measure">angular measure</a>, where all such terms can be discussed in one place. Where did you find the link to "arc of minute"? --<a href="/wiki/User:Zundark" title="User:Zundark">Zundark</a>, 2001 Nov 2</dd></dl> <dl><dd><a href="/wiki/Nautical_mile" title="Nautical mile">Nautical_mile</a> is one link to here, <a href="/wiki/Minute" title="Minute">Minute</a> is another. What's an idea on cleaning this one up? Doesn't look like the angular measures are made, and I'm new and reluctant to attempt tying loose ends and botching it, or to start a new article that may not be warrented. I'm expecting this should fit with other standardized units of measure (linear distance, area, volume) in how it looks and behaves. Once created, perhaps this page ought to redirect to the 'cleaned up' version under <a href="/wiki/User:Zundark" title="User:Zundark">Zundark</a>'s preferred title. Would an arc '<a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">Orders of magnitude</a>' be appropriate? Two ways to look at that one: 1) <a href="/wiki/Arc_minute" class="mw-redirect" title="Arc minute">Arc minute</a> of <a href="/wiki/Earth" title="Earth">Earth</a> (as standardized by the <a href="/wiki/Nautical_mile" title="Nautical mile">Nautical mile</a> vs. the same on the <a href="/wiki/Sun" title="Sun">Sun</a>, and 2) <a href="/wiki/Degree" class="mw-disambig" title="Degree">Degree</a> vs. <a href="/wiki/Arc_minute" class="mw-redirect" title="Arc minute">Arc minute</a> vs. <a href="/wiki/Radian" title="Radian">Radian</a>. If an old-hand at this doesn't mind steering me in an appropriate direction, I'll tack this on my 'Wiki-to-do' and fuss over it over time. --<a href="/wiki/User:Romaq" title="User:Romaq">Romaq</a> 2002 Jan 21</dd></dl> <hr/> <p>I'll see what I can do on anglar measurements. <a href="/wiki/User:--_April" title="User:-- April">-- April</a> 09:04 Aug 7, 2002 (PDT) </p><p><br/> </p> <hr/> <p>It seems sensible that one of <a href="/wiki/Minute_of_arc" class="mw-redirect" title="Minute of arc">Minute of arc</a> and <a href="/wiki/Arcsecond" class="mw-redirect" title="Arcsecond">Arcsecond</a> should be renamed to fit in with the other. Both belong to Category: Units of angle <a href="/wiki/User:Icairns" title="User:Icairns">Icairns</a> 21:39, 25 Jun 2004 (UTC) </p> <hr/> <p>First we have to decide which is the "most correct". Arcsecond (or arc second) is far less awkward, anyway. --<a href="/wiki/User:Elektron" title="User:Elektron">Elektron</a> 10:28, 2004 Jul 4 (UTC) </p> <dl><dd>I find in practice (as an astronomer) that arcminute and arcsecond are most used. Certainly 'second of arc' is never used in my experience. Of course these things crop up in several fields. <a href="/wiki/User:EddEdmondson" title="User:EddEdmondson">EddEdmondson</a> 10:32, 4 Jul 2004 (UTC)</dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="merge_arcminute_and_arcsecond_articles" data-mw-thread-id="h-merge_arcminute_and_arcsecond_articles-2006-02-03T11:04:00.000Z"><span data-mw-comment-start="" id="h-merge_arcminute_and_arcsecond_articles-2006-02-03T11:04:00.000Z"></span>merge arcminute and arcsecond articles<span data-mw-comment-end="h-merge_arcminute_and_arcsecond_articles-2006-02-03T11:04:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=3" title="Edit section: merge arcminute and arcsecond articles"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-MHD-2006-02-03T11:04:00.000Z-merge_arcminute_and_arcsecond_articles"></span>I see above that there has been some discussion in the past about merging the articles on arcminute and <a href="/wiki/Arcsecond" class="mw-redirect" title="Arcsecond">arcsecond</a>. This may be a good idea to pick up. Most info on one page could be (or already is) on the other. <a href="/wiki/User:MHD" title="User:MHD">MHD</a> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-MHD-2006-02-03T11:04:00.000Z-merge_arcminute_and_arcsecond_articles" class="ext-discussiontools-init-timestamplink">11:04, 3 February 2006 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-MHD-2006-02-03T11:04:00.000Z-merge_arcminute_and_arcsecond_articles"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-MHD-2006-02-03T11:04:00.000Z-merge_arcminute_and_arcsecond_articles"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-Zandperl-2006-02-08T04:49:00.000Z-MHD-2006-02-03T11:04:00.000Z"></span>For a comparison, <a href="/wiki/Centimetre" title="Centimetre">centimetre</a> redirects to <a href="/wiki/Metre" title="Metre">metre</a>, but <a href="/wiki/Millimetre" title="Millimetre">millimetre</a> redirects to <a href="/wiki/1_E-3_m" class="mw-redirect" title="1 E-3 m">1 E-3 m</a>. Is there a reason to keep both <a href="/wiki/Arcminute" class="mw-redirect" title="Arcminute">arcminute</a> and <a href="/wiki/Arcsecond" class="mw-redirect" title="Arcsecond">arcsecond</a> separate from <a href="/wiki/Degree_(angle)" title="Degree (angle)">degree (angle)</a> as well? It might make sense to merge all three. Otherwise, merging a minimum of arcsec into arcmin makes sense to me. Should someone put up a "merge suggested" tag? --<a href="/wiki/User:Zandperl" title="User:Zandperl">zandperl</a> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Zandperl-2006-02-08T04:49:00.000Z-MHD-2006-02-03T11:04:00.000Z" class="ext-discussiontools-init-timestamplink">04:49, 8 February 2006 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Zandperl-2006-02-08T04:49:00.000Z-MHD-2006-02-03T11:04:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Zandperl-2006-02-08T04:49:00.000Z-MHD-2006-02-03T11:04:00.000Z"></span></dd></dl> <p><span data-mw-comment-start="" id="c-MHD-2006-02-08T09:56:00.000Z-merge_arcminute_and_arcsecond_articles"></span>I agree: merging all three may be a sensible thing to do, but maybe also a little more time consuming to do, as opposed to just merging the <a href="/wiki/Arcminute" class="mw-redirect" title="Arcminute">arcminute</a> and <a href="/wiki/Arcsecond" class="mw-redirect" title="Arcsecond">arcsecond</a> articles and leaving the <a href="/wiki/Degree" class="mw-disambig" title="Degree">degree</a> article as it is. <br/> As to the millimetre/centimetre/metre issue, I have no idea why <a href="/wiki/Millimetre" title="Millimetre">millimetre</a> links to <a href="/wiki/1_E-3_m" class="mw-redirect" title="1 E-3 m">1 E-3 m</a>, and not to <a href="/wiki/Metre" title="Metre">metre</a>, which it should, in my opinion. <br/> <a href="/wiki/User:MHD" title="User:MHD">MHD</a> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-MHD-2006-02-08T09:56:00.000Z-merge_arcminute_and_arcsecond_articles" class="ext-discussiontools-init-timestamplink">09:56, 8 February 2006 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-MHD-2006-02-08T09:56:00.000Z-merge_arcminute_and_arcsecond_articles"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-MHD-2006-02-08T09:56:00.000Z-merge_arcminute_and_arcsecond_articles"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-MHD-2006-03-26T21:09:00.000Z-MHD-2006-02-08T09:56:00.000Z"></span>Nobody else seems to care, so I decided to finally start the merging process of <a href="/wiki/Arcsecond" class="mw-redirect" title="Arcsecond">arcsecond</a> into this article. There are some information elements in the arcsecond article that I still have to merge into this one, after that is done (hopefully tomorrow), I will make <a href="/wiki/Arcsecond" class="mw-redirect" title="Arcsecond">arcsecond</a> redirect to <a href="/wiki/Minute_of_arc" class="mw-redirect" title="Minute of arc">minute of arc</a>. I will also merge the information from <a href="/wiki/Milliarcsecond" class="mw-redirect" title="Milliarcsecond">milliarcsecond</a> into here. Cheers, <a href="/wiki/User:MHD" title="User:MHD">MHD</a> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-MHD-2006-03-26T21:09:00.000Z-MHD-2006-02-08T09:56:00.000Z" class="ext-discussiontools-init-timestamplink">21:09, 26 March 2006 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-MHD-2006-03-26T21:09:00.000Z-MHD-2006-02-08T09:56:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-MHD-2006-03-26T21:09:00.000Z-MHD-2006-02-08T09:56:00.000Z"></span></dd></dl> <p><br/> </p> <ul><li>(anonymous user): this is an encyclopedia, not a dictionary. We don't need a new article for each prefix of a standard unit. Merge at will :)</li></ul> <ul><li>I support the merging of the arcminute and milliarcsecond articles, as long as no information from either article is lost/discarded. The content of the two articles is substantially different and the milliarcsecond article contains some interesting facts and trivia. <a href="/wiki/User:Jaganath" title="User:Jaganath">User: Jaganath</a> 16:12 07 June 2006 UTC</li></ul> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="other_uses_of_arcminutes_and_arcseconds" data-mw-thread-id="h-other_uses_of_arcminutes_and_arcseconds-2006-02-04T11:35:00.000Z"><span data-mw-comment-start="" id="h-other_uses_of_arcminutes_and_arcseconds-2006-02-04T11:35:00.000Z"></span>other uses of arcminutes and arcseconds<span data-mw-comment-end="h-other_uses_of_arcminutes_and_arcseconds-2006-02-04T11:35:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=4" title="Edit section: other uses of arcminutes and arcseconds"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-MHD-2006-02-04T11:35:00.000Z-other_uses_of_arcminutes_and_arcseconds"></span>Arcminutes and arcseconds are indeed used when measuring the <a href="/wiki/Declination" title="Declination">declination</a> of an object on the sky. When measuring the <a href="/wiki/Right_ascension" title="Right ascension">right ascension</a> (RA), these units are <i>not</i> used (as is correctly stated by <a href="/wiki/User:Zandperl" title="User:Zandperl">User:Zandperl</a> in the article). Instead, RA is measured in: </p> <ul><li><b>hours</b>, (24 h = 360 degrees -> 1 h = 15 degrees)</li> <li><b>minutes</b>, (1 minute = 15/60 degrees = 1/4 of a degree = 15 arcminutes) and</li> <li><b>seconds</b>, (1 second = 15/3600 degrees = 1/240 of a degree = 15 arcseconds)</li></ul> <p>This a fair thing to put in an article on arcminutes (or <a href="/wiki/Arcsecond" class="mw-redirect" title="Arcsecond">arcseconds</a> for that matter). </p><p>However, there are numerous other coordinate systems that use the <a href="/wiki/Degree" class="mw-disambig" title="Degree">degree</a> (and its subdivisions arcminute and arcsecond), such as <a href="/wiki/Galactic_coordinates" class="mw-redirect" title="Galactic coordinates">Galactic coordinates</a>, though it is also common to express galactic longitude and latitude in ordinary decimal fractions of degrees, the coordinates of an object may be expressed as "l = 48.85 and b = -1.96", meaning that it has a galactic longitude of 48 and 85/100 of a degree and a galactic latitude of minus 1 minus 96/100 of a degree. </p><p>Oops, forgot to sign this message yesterday. It was written by me: <a href="/wiki/User:MHD" title="User:MHD">MHD</a> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-MHD-2006-02-04T11:35:00.000Z-other_uses_of_arcminutes_and_arcseconds" class="ext-discussiontools-init-timestamplink">11:35, 4 February 2006 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-MHD-2006-02-04T11:35:00.000Z-other_uses_of_arcminutes_and_arcseconds"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-MHD-2006-02-04T11:35:00.000Z-other_uses_of_arcminutes_and_arcseconds"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-Zandperl-2006-02-04T15:12:00.000Z-MHD-2006-02-04T11:35:00.000Z"></span>I also threw the below into the article before, and some cleaned-up version might be appropriate in the article. <ol><li>Astronomers typically measure <a href="/wiki/Right_Ascension" class="mw-redirect" title="Right Ascension">Right Ascension</a> in hours, minutes, and seconds. RA minutes and seconds are not to be confused with Declination arcminutes and arcseconds, as they are of a different size.</li> <li>In right ascension and longitude, the size of the degree (and therefore arcmin and arcsec) changes with how far you are from the equator.</li></ol> <dl><dd><dl><dd><i>As opposed to a degree of latitude, which always corresponds to about 111 km (69 mi), a degree of longitude corresponds to a distance from 0 to 111 km: it is 111 km times the cosine of the latitude, when the distance is laid out on a circle of constant latitude; if the shortest distance, on a great circle were used, the distance would be even a little less.</i> (<a href="/wiki/Longitude" title="Longitude">Longitude</a> page)</dd></dl></dd></dl></dd> <dd>Whatever we decide upon should also have a modified version in the <a href="/wiki/Arcsecond" class="mw-redirect" title="Arcsecond">arcsecond</a> page.</dd> <dd>--<a href="/wiki/User:Zandperl" title="User:Zandperl">zandperl</a> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Zandperl-2006-02-04T15:12:00.000Z-MHD-2006-02-04T11:35:00.000Z" class="ext-discussiontools-init-timestamplink">15:12, 4 February 2006 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Zandperl-2006-02-04T15:12:00.000Z-MHD-2006-02-04T11:35:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Zandperl-2006-02-04T15:12:00.000Z-MHD-2006-02-04T11:35:00.000Z"></span></dd></dl> <p>I agree to the fact that information in the arcminute page should also be on arcsecond, that is exactly the reason why I proposed to merge these two articles (see topic above this one). 17:23, 4 February 2006 (UTC) </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Visual_Acuity_Under_Cartography?" data-mw-thread-id="h-Visual_Acuity_Under_Cartography?-2006-02-19T20:13:00.000Z"><span id="Visual_Acuity_Under_Cartography.3F"></span><span data-mw-comment-start="" id="h-Visual_Acuity_Under_Cartography?-2006-02-19T20:13:00.000Z"></span>Visual Acuity Under Cartography?<span data-mw-comment-end="h-Visual_Acuity_Under_Cartography?-2006-02-19T20:13:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=5" title="Edit section: Visual Acuity Under Cartography?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Mysterd429-2006-02-19T20:13:00.000Z-Visual_Acuity_Under_Cartography?"></span>Visual acuity should be under a different section as best as I can tell. Unfortuntately, I only know about visual acuity what I've read on Wikipedia. Should the section be called "Ophthalmology"? Thanks! <a href="/wiki/User:Mysterd429" title="User:Mysterd429">Don</a> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Mysterd429-2006-02-19T20:13:00.000Z-Visual_Acuity_Under_Cartography?" class="ext-discussiontools-init-timestamplink">20:13, 19 February 2006 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Mysterd429-2006-02-19T20:13:00.000Z-Visual_Acuity_Under_Cartography?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Mysterd429-2006-02-19T20:13:00.000Z-Visual_Acuity_Under_Cartography?"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Right_ascension_in_cartography" data-mw-thread-id="h-Right_ascension_in_cartography-2006-04-18T12:18:00.000Z"><span data-mw-comment-start="" id="h-Right_ascension_in_cartography-2006-04-18T12:18:00.000Z"></span>Right ascension in cartography<span data-mw-comment-end="h-Right_ascension_in_cartography-2006-04-18T12:18:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=6" title="Edit section: Right ascension in cartography"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-MHD-2006-04-18T12:18:00.000Z-Right_ascension_in_cartography"></span>I am only familiar with the term 'Right Ascension' when it is used in astronomy. I am a bit confused as to what it really means in cartography: does it refer to a different concept than geographical longitude, or is is just a different name for the same thing? I understand that the distance over the surface of the earth corresponding to 1 degree of right ascension would vary depending on the geographical latitude (how far from the equator you are). Talking about such variations makes much less sense in astronomy, which is why I removed the reference to astronomy in the Cartography section. <br/> In addition: the page about <a href="/wiki/Right_ascension" title="Right ascension">Right ascension</a> does not handle the subject of its use in cartography at all, so I don't think it is wise to have a link pointing from the cartography section of <a href="/wiki/Minute_of_arc" class="mw-redirect" title="Minute of arc">Minute of arc</a> directly to <a href="/wiki/Right_ascension" title="Right ascension">Right ascension</a>. <br/> Can somebody help me out on the meaning of 'right ascension' in cartography? And maybe (help me) come up with a clearer description in this section and/or write a section about the use of right ascension in the <a href="/wiki/Right_ascension" title="Right ascension">Right ascension</a> article? <br/> Thanks, <a href="/wiki/User:MHD" title="User:MHD">MHD</a> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-MHD-2006-04-18T12:18:00.000Z-Right_ascension_in_cartography" class="ext-discussiontools-init-timestamplink">12:18, 18 April 2006 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-MHD-2006-04-18T12:18:00.000Z-Right_ascension_in_cartography"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-MHD-2006-04-18T12:18:00.000Z-Right_ascension_in_cartography"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Incorrect_formula?" data-mw-thread-id="h-Incorrect_formula?-2008-08-01T00:10:00.000Z"><span id="Incorrect_formula.3F"></span><span data-mw-comment-start="" id="h-Incorrect_formula?-2008-08-01T00:10:00.000Z"></span>Incorrect formula?<span data-mw-comment-end="h-Incorrect_formula?-2008-08-01T00:10:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=7" title="Edit section: Incorrect formula?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-JohnMc-2008-08-01T00:10:00.000Z-Incorrect_formula?"></span>Although I am not a firearm afficionado, i think the correct formula is 2*tan(MOA ∙ <a href="/wiki/%CE%A0" class="mw-redirect mw-disambig" title="Π">π</a>/21600)*distance, since you are trying to find the opposite side of an angle, given the adjacent side. It may be that for accurate estimates, the tan is not needed since the results are very close, for example in the example given, the answer computed using tan is approximately 1.04719756 which differs by only 7∙10^-9 inches from the previous value. </p><p>I also think it's incorrect. Tangent is a right triangle function, in the main article formula, tan(MOA ∕ 60)*distance, tangent is being applied to an isosceles triangle. Because the two equal angles at the base approach 90 degrees (in these cases) the error is not so great. However, the correct approach is to split the isosceles triangle into two identical right triangles, as the person who posted the above paragraph did, calculate the value for the halves then multiply it by two. So the formula for would be 2*tan(MOA/120)*distance. (JohnMc 7-31-08) <small>—Preceding <a href="/wiki/Wikipedia:Signatures" title="Wikipedia:Signatures">unsigned</a> comment added by <a href="/w/index.php?title=User:JohnMc&action=edit&redlink=1" class="new" title="User:JohnMc (page does not exist)">JohnMc</a> (<a href="/w/index.php?title=User_talk:JohnMc&action=edit&redlink=1" class="new" title="User talk:JohnMc (page does not exist)">talk</a> • <a href="/wiki/Special:Contributions/JohnMc" title="Special:Contributions/JohnMc">contribs</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-JohnMc-2008-08-01T00:10:00.000Z-Incorrect_formula?" class="ext-discussiontools-init-timestamplink">00:10, 1 August 2008 (UTC)</a></small><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-JohnMc-2008-08-01T00:10:00.000Z-Incorrect_formula?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-JohnMc-2008-08-01T00:10:00.000Z-Incorrect_formula?"></span> </p> <div class="mw-heading mw-heading3"><h3 id="Different_interpretations_of_1′_at_100_yards_yield_differences_too_tiny_to_be_worth_consideration" data-mw-thread-id="h-Different_interpretations_of_1′_at_100_yards_yield_differences_too_tiny_to_be-Incorrect_formula?-2019-12-23T16:28:00.000Z"><span id="Different_interpretations_of_1.E2.80.B2_at_100_yards_yield_differences_too_tiny_to_be_worth_consideration"></span><span data-mw-comment-start="" id="h-Different_interpretations_of_1′_at_100_yards_yield_differences_too_tiny_to_be-Incorrect_formula?-2019-12-23T16:28:00.000Z"></span><span class="anchor" id="Stop_quibbling"></span>Different interpretations of 1′ at 100 yards yield differences too tiny to be worth consideration<span data-mw-comment-end="h-Different_interpretations_of_1′_at_100_yards_yield_differences_too_tiny_to_be-Incorrect_formula?-2019-12-23T16:28:00.000Z"></span></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=8" title="Edit section: Different interpretations of 1′ at 100 yards yield differences too tiny to be worth consideration"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><span data-mw-comment-start="" id="c-Peter_M._Brown-2019-12-23T16:28:00.000Z-Different_interpretations_of_1′_at_100_yards_yield_differences_too_tiny_to_be"></span>The calculation by <a rel="nofollow" class="external text" href="http://dexadine.com/WhatMOA.htm">Dexadine</a>, now cited in the article, considers the length along an arc all points of which are 100 yards from the observer. JohnMc, above, treats the distance between the endpoints of that arc. In an edit I reverted, CoastalShooter considers the length of a line perpendicular to the line of sight with one end 100 yards from the observer. The results differ by a few ten-thousands of an inch, not enough to be worth arguing about. It's enough to say that the length is approximately 1.047 inches, which everyone agrees on. <a href="/wiki/User:Peter_M._Brown" title="User:Peter M. Brown">Peter Brown</a> (<a href="/wiki/User_talk:Peter_M._Brown" title="User talk:Peter M. Brown">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Peter_M._Brown-2019-12-23T16:28:00.000Z-Different_interpretations_of_1′_at_100_yards_yield_differences_too_tiny_to_be" class="ext-discussiontools-init-timestamplink">16:28, 23 December 2019 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Peter_M._Brown-2019-12-23T16:28:00.000Z-Different_interpretations_of_1′_at_100_yards_yield_differences_too_tiny_to_be"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Peter_M._Brown-2019-12-23T16:28:00.000Z-Different_interpretations_of_1′_at_100_yards_yield_differences_too_tiny_to_be"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="This_is_incorrect?" data-mw-thread-id="h-This_is_incorrect?-2007-04-28T17:05:00.000Z"><span id="This_is_incorrect.3F"></span><span data-mw-comment-start="" id="h-This_is_incorrect?-2007-04-28T17:05:00.000Z"></span>This is incorrect?<span data-mw-comment-end="h-This_is_incorrect?-2007-04-28T17:05:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=9" title="Edit section: This is incorrect?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-62.248.159.240-2007-04-28T17:05:00.000Z-This_is_incorrect?"></span>The is no "minute of arc" it is MINUTE OF ANGLE. <small>—The preceding <a href="/wiki/Wikipedia:Sign_your_posts_on_talk_pages" class="mw-redirect" title="Wikipedia:Sign your posts on talk pages">unsigned</a> comment was added by <a href="/wiki/Special:Contributions/62.248.159.240" title="Special:Contributions/62.248.159.240">62.248.159.240</a> (<a href="/wiki/User_talk:62.248.159.240" title="User talk:62.248.159.240">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-62.248.159.240-2007-04-28T17:05:00.000Z-This_is_incorrect?" class="ext-discussiontools-init-timestamplink">17:05, 28 April 2007 (UTC)</a>.</small><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-62.248.159.240-2007-04-28T17:05:00.000Z-This_is_incorrect?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-62.248.159.240-2007-04-28T17:05:00.000Z-This_is_incorrect?"></span> </p><p><br/><span data-mw-comment-start="" id="c-Arthurrh-2007-07-09T19:57:00.000Z-This_is_incorrect?"></span> How about adding a simple paragraph that discusses the "minute of arc" vs "minute of angle". While it looks to me like astronomer types use arc, the firearms people most definitely do not. So a firearms person coming to this page may be confused, even if arc is technically the correct term (which I am not sure of). So maybe a "common confusion" paragraph/section that explains common usages, etc. <a href="/w/index.php?title=User:Arthurrh&action=edit&redlink=1" class="new" title="User:Arthurrh (page does not exist)">Arthurrh</a> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Arthurrh-2007-07-09T19:57:00.000Z-This_is_incorrect?" class="ext-discussiontools-init-timestamplink">19:57, 9 July 2007 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Arthurrh-2007-07-09T19:57:00.000Z-This_is_incorrect?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Arthurrh-2007-07-09T19:57:00.000Z-This_is_incorrect?"></span> </p><p><span data-mw-comment-start="" id="c-188.142.56.253-2011-02-12T20:10:00.000Z-This_is_incorrect?"></span>There definitely is a "minute of arc". It is used by vision scientists (too). <span style="font-size: smaller;" class="autosigned">—Preceding <a href="/wiki/Wikipedia:Signatures" title="Wikipedia:Signatures">unsigned</a> comment added by <a href="/wiki/Special:Contributions/188.142.56.253" title="Special:Contributions/188.142.56.253">188.142.56.253</a> (<a href="/w/index.php?title=User_talk:188.142.56.253&action=edit&redlink=1" class="new" title="User talk:188.142.56.253 (page does not exist)">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-188.142.56.253-2011-02-12T20:10:00.000Z-This_is_incorrect?" class="ext-discussiontools-init-timestamplink">20:10, 12 February 2011 (UTC)</a></span><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-188.142.56.253-2011-02-12T20:10:00.000Z-This_is_incorrect?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-188.142.56.253-2011-02-12T20:10:00.000Z-This_is_incorrect?"></span> <br/><span data-mw-comment-start="" id="c-Tabascofernandez-2017-07-14T21:51:00.000Z-This_is_incorrect?"></span> one "arc" is a 1/6 of a revolution. so 1/60 arc, is a degree (6*60 = 360). then 1/60*1/60 = 1/3600, etc (just like time fractioning). its so weird that some people still insisting to use this kind of decimalization <a href="/w/index.php?title=User:Tabascofernandez&action=edit&redlink=1" class="new" title="User:Tabascofernandez (page does not exist)">Tabascofernandez</a> (<a href="/wiki/User_talk:Tabascofernandez" title="User talk:Tabascofernandez">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Tabascofernandez-2017-07-14T21:51:00.000Z-This_is_incorrect?" class="ext-discussiontools-init-timestamplink">21:51, 14 July 2017 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Tabascofernandez-2017-07-14T21:51:00.000Z-This_is_incorrect?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Tabascofernandez-2017-07-14T21:51:00.000Z-This_is_incorrect?"></span> </p><p><span data-mw-comment-start="" id="c-Cross_Reference-2020-01-01T21:29:00.000Z-This_is_incorrect?"></span>"one "arc" is a 1/6 of a revolution." Huh? An arc is simply a piece of a circle and can be any length or subtend any angle. <a href="/wiki/User:Cross_Reference" title="User:Cross Reference">Cross Reference</a> (<a href="/wiki/User_talk:Cross_Reference" title="User talk:Cross Reference">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Cross_Reference-2020-01-01T21:29:00.000Z-This_is_incorrect?" class="ext-discussiontools-init-timestamplink">21:29, 1 January 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Cross_Reference-2020-01-01T21:29:00.000Z-This_is_incorrect?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Cross_Reference-2020-01-01T21:29:00.000Z-This_is_incorrect?"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-merged..." data-mw-thread-id="h-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m-2007-04-29T04:39:00.000Z"><span id="Minute_of_arc_is_standard_terminology_in_astronomy.3B_arcseconds_not_really_well-merged..."></span><span data-mw-comment-start="" id="h-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m-2007-04-29T04:39:00.000Z"></span>Minute of arc is standard terminology in astronomy; arcseconds not really well-merged...<span data-mw-comment-end="h-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m-2007-04-29T04:39:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=10" title="Edit section: Minute of arc is standard terminology in astronomy; arcseconds not really well-merged..."><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-67.142.130.45-2007-04-29T04:39:00.000Z-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m"></span>Re: the previous post -- "Minute of angle" may be the correct terminology in firearms work -- from the article, I gathered that -- but it is never used in astronomy. In astronomy, the correct terminology is "minute of arc". I don't have a reference for this, but I have long experience as a professional optical astronomer. So the moral is, don't be too hasty in categorically saying a term is not used, the world is very big! </p><p>Regarding the merging of arcsecond into arcminute, I think it could be improved. Also, there's no noting that the abbreviation "mas" means "milliarcsecond" in some contexts; if you look at e.g. the article on "Teegarden's star" the quoted values for parallax and proper motion make use of the "mas" notation, which directs you to "minute of arc", where there is no longer an explanation of the "mas". <a href="/w/index.php?title=User:67.142.130.45&action=edit&redlink=1" class="new" title="User:67.142.130.45 (page does not exist)">67.142.130.45</a> = Jthorstensen ; <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-67.142.130.45-2007-04-29T04:39:00.000Z-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m" class="ext-discussiontools-init-timestamplink">04:39, 29 April 2007 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-67.142.130.45-2007-04-29T04:39:00.000Z-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-67.142.130.45-2007-04-29T04:39:00.000Z-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m"></span> </p><p><span data-mw-comment-start="" id="c-Tabascofernandez-2017-07-14T22:16:00.000Z-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m"></span>(A little later) -- I went ahead and touched up the arcsecond discussion a bit, in particular adding an explicit reference to the milliarcsecond; I know it's a standard SI prefix, but it seems to confuse people so it's worth a sentence or two. I can't seem to get my four-tilde signature to work from home, but I am JThorstensen.<br/> <br/> after milli/ micro sec[ond] in time, the milli/ micro deg[ree] in angle is the best path to proceed, while lacking in temperature (98 Fa[hren], 53 Ce[lsie], 520 Ke[lvin] ). <a href="/w/index.php?title=User:Tabascofernandez&action=edit&redlink=1" class="new" title="User:Tabascofernandez (page does not exist)">Tabascofernandez</a> (<a href="/wiki/User_talk:Tabascofernandez" title="User talk:Tabascofernandez">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Tabascofernandez-2017-07-14T22:16:00.000Z-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m" class="ext-discussiontools-init-timestamplink">22:16, 14 July 2017 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Tabascofernandez-2017-07-14T22:16:00.000Z-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Tabascofernandez-2017-07-14T22:16:00.000Z-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Minute_of_Arc,_The_band" data-mw-thread-id="h-Minute_of_Arc,_The_band-2009-04-09T03:44:00.000Z"><span id="Minute_of_Arc.2C_The_band"></span><span data-mw-comment-start="" id="h-Minute_of_Arc,_The_band-2009-04-09T03:44:00.000Z"></span>Minute of Arc, The band<span data-mw-comment-end="h-Minute_of_Arc,_The_band-2009-04-09T03:44:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=11" title="Edit section: Minute of Arc, The band"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-69.140.192.220-2009-04-09T03:44:00.000Z-Minute_of_Arc,_The_band"></span>minute of arc the band can be found at www.mypace.com/moa </p><p>This appears at the head of this article as of 11:42PM EST. That belongs on a disambiguation page! Whomever posted that needs to take it down and do it right. Thanks. <span style="font-size: smaller;" class="autosigned">—Preceding <a href="/wiki/Wikipedia:Signatures" title="Wikipedia:Signatures">unsigned</a> comment added by <a href="/wiki/Special:Contributions/69.140.192.220" title="Special:Contributions/69.140.192.220">69.140.192.220</a> (<a href="/w/index.php?title=User_talk:69.140.192.220&action=edit&redlink=1" class="new" title="User talk:69.140.192.220 (page does not exist)">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-69.140.192.220-2009-04-09T03:44:00.000Z-Minute_of_Arc,_The_band" class="ext-discussiontools-init-timestamplink">03:44, 9 April 2009 (UTC)</a></span><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-69.140.192.220-2009-04-09T03:44:00.000Z-Minute_of_Arc,_The_band"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-69.140.192.220-2009-04-09T03:44:00.000Z-Minute_of_Arc,_The_band"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Race_Elapsed_Time" data-mw-thread-id="h-Race_Elapsed_Time-2010-07-01T07:50:00.000Z"><span data-mw-comment-start="" id="h-Race_Elapsed_Time-2010-07-01T07:50:00.000Z"></span>Race Elapsed Time<span data-mw-comment-end="h-Race_Elapsed_Time-2010-07-01T07:50:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=12" title="Edit section: Race Elapsed Time"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-DeNoel-2010-07-01T07:50:00.000Z-Race_Elapsed_Time"></span>In terms of racing, I've seen the elapsed time displayed as, say 33'21" (33 minutes, 21 seconds). However, this article is not very clear on what happens in races that last over an hour. Does the minutes continue to count up (93'=60'+33'), does it use the degree symbol °, or is it displayed in some other format?<br/> <br/>I request a new section on the use of the arcminute in racing.<br/> <a href="/wiki/User:DeNoel" class="mw-redirect" title="User:DeNoel">Christopher, Salem, OR</a> (<a href="/wiki/User_talk:DeNoel" class="mw-redirect" title="User talk:DeNoel">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-DeNoel-2010-07-01T07:50:00.000Z-Race_Elapsed_Time" class="ext-discussiontools-init-timestamplink">07:50, 1 July 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-DeNoel-2010-07-01T07:50:00.000Z-Race_Elapsed_Time"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-DeNoel-2010-07-01T07:50:00.000Z-Race_Elapsed_Time"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-M3tainfo-2010-08-29T09:36:00.000Z-DeNoel-2010-07-01T07:50:00.000Z"></span>This has <i>nothing</i> to do with racing or timing, Arcminutes are a measure of <i>angle</i> not time. <b><span style="color:#aaa;">—</span> <a href="/wiki/User:M3tainfo" title="User:M3tainfo"><span style="color:#0055dd;">M3TA</span></a><span style="color:#aaa;">(</span><a href="/wiki/User_talk:M3tainfo" title="User talk:M3tainfo"><span style="color:#0022aa;">info</span></a><span style="color:#aaa;">) @</span></b> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-M3tainfo-2010-08-29T09:36:00.000Z-DeNoel-2010-07-01T07:50:00.000Z" class="ext-discussiontools-init-timestamplink">09:36, 29 August 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-M3tainfo-2010-08-29T09:36:00.000Z-DeNoel-2010-07-01T07:50:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-M3tainfo-2010-08-29T09:36:00.000Z-DeNoel-2010-07-01T07:50:00.000Z"></span></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Unit_conversions_valid" data-mw-thread-id="h-Unit_conversions_valid-2010-07-29T20:35:00.000Z"><span data-mw-comment-start="" id="h-Unit_conversions_valid-2010-07-29T20:35:00.000Z"></span>Unit conversions valid<span data-mw-comment-end="h-Unit_conversions_valid-2010-07-29T20:35:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=13" title="Edit section: Unit conversions valid"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Rs2-2010-07-29T20:35:00.000Z-Unit_conversions_valid"></span>I just checked all of the unit conversions using Google as a calculator both with Google's value of pi and with MathWorld's value of pi. The only value I was unable to verify to all digits was minute of arc in radians (which has one more significant figure than Google supports). Given that these conversions involve only integers and pi, I am shocked by this label on this article: "The factual accuracy of this article may be compromised by unit conversions quoted to a greater precision than can be justified from the original data. Please help improve this article by truncating values to a suitable number of significant figures." I haven't edited wikipedia in a while, so I am reluctant to remove this label. <a href="/wiki/User:Rs2" title="User:Rs2">rs2</a> (<a href="/wiki/User_talk:Rs2" title="User talk:Rs2">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Rs2-2010-07-29T20:35:00.000Z-Unit_conversions_valid" class="ext-discussiontools-init-timestamplink">20:35, 29 July 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Rs2-2010-07-29T20:35:00.000Z-Unit_conversions_valid"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Rs2-2010-07-29T20:35:00.000Z-Unit_conversions_valid"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-M3tainfo-2010-08-29T09:36:00.000Z-Rs2-2010-07-29T20:35:00.000Z"></span>Agreed, so have removed the label. <b><span style="color:#aaa;">—</span> <a href="/wiki/User:M3tainfo" title="User:M3tainfo"><span style="color:#0055dd;">M3TA</span></a><span style="color:#aaa;">(</span><a href="/wiki/User_talk:M3tainfo" title="User talk:M3tainfo"><span style="color:#0022aa;">info</span></a><span style="color:#aaa;">) @</span></b> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-M3tainfo-2010-08-29T09:36:00.000Z-Rs2-2010-07-29T20:35:00.000Z" class="ext-discussiontools-init-timestamplink">09:36, 29 August 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-M3tainfo-2010-08-29T09:36:00.000Z-Rs2-2010-07-29T20:35:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-M3tainfo-2010-08-29T09:36:00.000Z-Rs2-2010-07-29T20:35:00.000Z"></span></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Merge" data-mw-thread-id="h-Merge-2010-10-06T20:55:00.000Z"><span data-mw-comment-start="" id="h-Merge-2010-10-06T20:55:00.000Z"></span>Merge<span data-mw-comment-end="h-Merge-2010-10-06T20:55:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=14" title="Edit section: Merge"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-AliveFreeHappy-2010-10-06T20:55:00.000Z-Merge"></span>I think we should merge <a href="/wiki/Minute_of_Angle" class="mw-redirect" title="Minute of Angle">Minute of Angle</a> into this article. Note that <a href="/wiki/Minute_of_angle" class="mw-redirect" title="Minute of angle">Minute of angle</a> with lowercase "a" already redirects here. <a href="/w/index.php?title=User:AliveFreeHappy&action=edit&redlink=1" class="new" title="User:AliveFreeHappy (page does not exist)">AliveFreeHappy</a> (<a href="/wiki/User_talk:AliveFreeHappy" title="User talk:AliveFreeHappy">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-AliveFreeHappy-2010-10-06T20:55:00.000Z-Merge" class="ext-discussiontools-init-timestamplink">20:55, 6 October 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-AliveFreeHappy-2010-10-06T20:55:00.000Z-Merge"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-AliveFreeHappy-2010-10-06T20:55:00.000Z-Merge"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-OtterSmith-2010-10-19T00:25:00.000Z-AliveFreeHappy-2010-10-06T20:55:00.000Z"></span>It probably shouldn't do that. These are two distinct things. Retitling to (say) "Minute of Angle (firearms)" and "Minute of Arc (geometry)" would help, with topnotes to the other on each page. <a href="/wiki/User:OtterSmith" title="User:OtterSmith">htom</a> (<a href="/wiki/User_talk:OtterSmith" title="User talk:OtterSmith">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-OtterSmith-2010-10-19T00:25:00.000Z-AliveFreeHappy-2010-10-06T20:55:00.000Z" class="ext-discussiontools-init-timestamplink">00:25, 19 October 2010 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-OtterSmith-2010-10-19T00:25:00.000Z-AliveFreeHappy-2010-10-06T20:55:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-OtterSmith-2010-10-19T00:25:00.000Z-AliveFreeHappy-2010-10-06T20:55:00.000Z"></span></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Error:_Reason_for_"not_SI"" data-mw-thread-id="h-Error:_Reason_for_"not_SI"-2011-06-08T01:14:00.000Z"><span id="Error:_Reason_for_.22not_SI.22"></span><span data-mw-comment-start="" id="h-Error:_Reason_for_"not_SI"-2011-06-08T01:14:00.000Z"></span>Error: Reason for "not SI"<span data-mw-comment-end="h-Error:_Reason_for_"not_SI"-2011-06-08T01:14:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=15" title="Edit section: Error: Reason for "not SI""><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Gwideman-2011-06-08T01:14:00.000Z-Error:_Reason_for_"not_SI""></span>Currently the article contains the statement: "However, they [arcsecond and arcminute] are not themselves SI units because they are dimensionless.". This looks false to me -- is there a reference for this? Regardless of whether one considers units of angle to be dimensionless, that does not preclude them from being SI units. They are presumably not SI units for some other reason, perhaps because instead SI chooses radian as the unit for angle. <a href="/w/index.php?title=User:Gwideman&action=edit&redlink=1" class="new" title="User:Gwideman (page does not exist)">Gwideman</a> (<a href="/wiki/User_talk:Gwideman" title="User talk:Gwideman">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Gwideman-2011-06-08T01:14:00.000Z-Error:_Reason_for_"not_SI"" class="ext-discussiontools-init-timestamplink">01:14, 8 June 2011 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Gwideman-2011-06-08T01:14:00.000Z-Error:_Reason_for_"not_SI""><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Gwideman-2011-06-08T01:14:00.000Z-Error:_Reason_for_"not_SI""></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Someone_please_fix_the_recursive_self-linking" data-mw-thread-id="h-Someone_please_fix_the_recursive_self-linking-2012-02-06T04:17:00.000Z"><span data-mw-comment-start="" id="h-Someone_please_fix_the_recursive_self-linking-2012-02-06T04:17:00.000Z"></span>Someone please fix the recursive self-linking<span data-mw-comment-end="h-Someone_please_fix_the_recursive_self-linking-2012-02-06T04:17:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=16" title="Edit section: Someone please fix the recursive self-linking"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-71.109.153.28-2012-02-06T04:17:00.000Z-Someone_please_fix_the_recursive_self-linking"></span>The article says "This article is about geometry. For firearms terminology, see Minute of Angle." When you click on "Minute of Angle", it brings you right back to this page, because "Minute of Angle" is set to redirect here. Something is obviously wrong...<a href="/wiki/Special:Contributions/71.109.153.28" title="Special:Contributions/71.109.153.28">71.109.153.28</a> (<a href="/w/index.php?title=User_talk:71.109.153.28&action=edit&redlink=1" class="new" title="User talk:71.109.153.28 (page does not exist)">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-71.109.153.28-2012-02-06T04:17:00.000Z-Someone_please_fix_the_recursive_self-linking" class="ext-discussiontools-init-timestamplink">04:17, 6 February 2012 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-71.109.153.28-2012-02-06T04:17:00.000Z-Someone_please_fix_the_recursive_self-linking"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-71.109.153.28-2012-02-06T04:17:00.000Z-Someone_please_fix_the_recursive_self-linking"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Shouldn't_prad,_etc.,_be_defined_in_this_article?" data-mw-thread-id="h-Shouldn't_prad,_etc.,_be_defined_in_this_article?-2012-04-25T02:09:00.000Z"><span id="Shouldn.27t_prad.2C_etc..2C_be_defined_in_this_article.3F"></span><span data-mw-comment-start="" id="h-Shouldn't_prad,_etc.,_be_defined_in_this_article?-2012-04-25T02:09:00.000Z"></span>Shouldn't prad, etc., be defined in this article?<span data-mw-comment-end="h-Shouldn't_prad,_etc.,_be_defined_in_this_article?-2012-04-25T02:09:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=17" title="Edit section: Shouldn't prad, etc., be defined in this article?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Daqu-2012-04-25T02:09:00.000Z-Shouldn't_prad,_etc.,_be_defined_in_this_article?"></span>I see prad, etc., used at least in the units-of-angle table to express various angle units in terms of other ones. </p><p>But nowhere in Wikipedia could I find "prad" per se. Googling, I learned that prad stands for picoradian, one-trillionth (10<sup>-12</sup>) of a radian. But even the term "picoradian" occurs only once in Wikipedia, and does not seem to be defined there. </p><p>So I would recommend that any unit used here that can't be linked to its definition elsewhere in Wikipedia be defined here.<a href="/wiki/User:Daqu" title="User:Daqu">Daqu</a> (<a href="/wiki/User_talk:Daqu" title="User talk:Daqu">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Daqu-2012-04-25T02:09:00.000Z-Shouldn't_prad,_etc.,_be_defined_in_this_article?" class="ext-discussiontools-init-timestamplink">02:09, 25 April 2012 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Daqu-2012-04-25T02:09:00.000Z-Shouldn't_prad,_etc.,_be_defined_in_this_article?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Daqu-2012-04-25T02:09:00.000Z-Shouldn't_prad,_etc.,_be_defined_in_this_article?"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Table_in_"Symbols_and_abbreviations"_section_is_wrong" data-mw-thread-id="h-Table_in_"Symbols_and_abbreviations"_section_is_wrong-2015-12-17T18:08:00.000Z"><span id="Table_in_.22Symbols_and_abbreviations.22_section_is_wrong"></span><span data-mw-comment-start="" id="h-Table_in_"Symbols_and_abbreviations"_section_is_wrong-2015-12-17T18:08:00.000Z"></span>Table in "Symbols and abbreviations" section is wrong<span data-mw-comment-end="h-Table_in_"Symbols_and_abbreviations"_section_is_wrong-2015-12-17T18:08:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=18" title="Edit section: Table in "Symbols and abbreviations" section is wrong"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Scs-2015-12-17T18:08:00.000Z-Table_in_"Symbols_and_abbreviations"_section_is_wrong"></span>The table is titled "The <a href="/wiki/Sexagesimal" title="Sexagesimal">sexagesimal</a> system of <a href="/wiki/Angle" title="Angle">angular measurement</a>", but this is far from a purely sexagesimal system. If it were sexagesimal, each second would be divided into 60 <i>thirds</i> or <i><a href="/wiki/Tierce" class="mw-disambig" title="Tierce">tierces</a></i>, not 1000 milliseconds. I think it should just say "common units of <a href="/wiki/Angle" title="Angle">angular measurement</a>", or something. —<a href="/wiki/User:Scs" title="User:Scs">Steve Summit</a> (<a href="/wiki/User_talk:Scs" title="User talk:Scs">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Scs-2015-12-17T18:08:00.000Z-Table_in_"Symbols_and_abbreviations"_section_is_wrong" class="ext-discussiontools-init-timestamplink">18:08, 17 December 2015 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Scs-2015-12-17T18:08:00.000Z-Table_in_"Symbols_and_abbreviations"_section_is_wrong"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Scs-2015-12-17T18:08:00.000Z-Table_in_"Symbols_and_abbreviations"_section_is_wrong"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Can't_link_page_to_other_wikipedias" data-mw-thread-id="h-Can't_link_page_to_other_wikipedias-2016-01-18T11:13:00.000Z"><span id="Can.27t_link_page_to_other_wikipedias"></span><span data-mw-comment-start="" id="h-Can't_link_page_to_other_wikipedias-2016-01-18T11:13:00.000Z"></span>Can't link page to other wikipedias<span data-mw-comment-end="h-Can't_link_page_to_other_wikipedias-2016-01-18T11:13:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=19" title="Edit section: Can't link page to other wikipedias"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-MeUser42-2016-01-18T11:13:00.000Z-Can't_link_page_to_other_wikipedias"></span>e.g. <a class="external free" href="https://he.wikipedia.org/wiki/%D7%93%D7%A7%D7%AA_%D7%A7%D7%A9%D7%AA">https://he.wikipedia.org/wiki/%D7%93%D7%A7%D7%AA_%D7%A7%D7%A9%D7%AA</a> --<a href="/wiki/User:MeUser42" title="User:MeUser42">MeUser42</a> (<a href="/wiki/User_talk:MeUser42" title="User talk:MeUser42">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-MeUser42-2016-01-18T11:13:00.000Z-Can't_link_page_to_other_wikipedias" class="ext-discussiontools-init-timestamplink">11:13, 18 January 2016 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-MeUser42-2016-01-18T11:13:00.000Z-Can't_link_page_to_other_wikipedias"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-MeUser42-2016-01-18T11:13:00.000Z-Can't_link_page_to_other_wikipedias"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-Spinningspark-2016-01-18T21:03:00.000Z-MeUser42-2016-01-18T11:13:00.000Z"></span>Generally speaking, you can link anything like this <a href="https://he.wikipedia.org/wiki/%D7%93%D7%A7%D7%AA_%D7%A7%D7%A9%D7%AA" class="extiw" title="he:דקת קשת">he:דקת_קשת</a>. The reason why you don't see a link on the side is that the English version describes both minute and second of arc (<a href="https://www.wikidata.org/wiki/Q22066400" class="extiw" title="wikidata:Q22066400">wikidata:Q22066400</a>), while other languages describe either minute (<a href="https://www.wikidata.org/wiki/Q209426" class="extiw" title="wikidata:Q209426">wikidata:Q209426</a>) or second of arc (<a href="https://www.wikidata.org/wiki/Q829073" class="extiw" title="wikidata:Q829073">wikidata:Q829073</a>) in separate articles. If other languages merge them into one article, it can be linked in <a href="https://www.wikidata.org/wiki/Q22066400" class="extiw" title="wikidata:Q22066400">wikidata:Q22066400</a>. I'm not sure how the links can be done otherwise, since only one link per language is permitted. 19:29, 18 January 2016 (UTC)</dd></dl> <dl><dd><dl><dd>"...only one link per language is permitted..." in Wikidata. Multiple/additional links can still be added manually. And should be if it is beneficial to the encyclopaedia. Wikidata rules are of no consequence when compared to what is of benefit to our articles. If they have a problem with it, they need to fix it there, not distort the navigation of articles to make their coding neater. <a href="/wiki/User:Spinningspark" title="User:Spinningspark"><b style="background:#FAFAD2;color:#C08000">Spinning</b></a><a href="/wiki/User_talk:Spinningspark" title="User talk:Spinningspark"><b style="color:#4840A0">Spark</b></a> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Spinningspark-2016-01-18T21:03:00.000Z-MeUser42-2016-01-18T11:13:00.000Z" class="ext-discussiontools-init-timestamplink">21:03, 18 January 2016 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Spinningspark-2016-01-18T21:03:00.000Z-MeUser42-2016-01-18T11:13:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Spinningspark-2016-01-18T21:03:00.000Z-MeUser42-2016-01-18T11:13:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-Mwtoews-2016-01-18T23:19:00.000Z-Spinningspark-2016-01-18T21:03:00.000Z"></span>Sounds great if you know how it could be done. <samp>+<a href="/wiki/User:Mwtoews" title="User:Mwtoews"><span style="color:#008000;">m</span></a><a href="/wiki/User_talk:Mwtoews" title="User talk:Mwtoews"><span style="color:#6B3FA0;">t</span></a></samp> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Mwtoews-2016-01-18T23:19:00.000Z-Spinningspark-2016-01-18T21:03:00.000Z" class="ext-discussiontools-init-timestamplink">23:19, 18 January 2016 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Mwtoews-2016-01-18T23:19:00.000Z-Spinningspark-2016-01-18T21:03:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Mwtoews-2016-01-18T23:19:00.000Z-Spinningspark-2016-01-18T21:03:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-Spinningspark-2016-01-18T23:37:00.000Z-Mwtoews-2016-01-18T23:19:00.000Z"></span>See <a href="/wiki/Help:Interlanguage_links#Local_links" title="Help:Interlanguage links">Help:Interlanguage links#Local links</a>. <a href="/wiki/User:Spinningspark" title="User:Spinningspark"><b style="background:#FAFAD2;color:#C08000">Spinning</b></a><a href="/wiki/User_talk:Spinningspark" title="User talk:Spinningspark"><b style="color:#4840A0">Spark</b></a> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Spinningspark-2016-01-18T23:37:00.000Z-Mwtoews-2016-01-18T23:19:00.000Z" class="ext-discussiontools-init-timestamplink">23:37, 18 January 2016 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Spinningspark-2016-01-18T23:37:00.000Z-Mwtoews-2016-01-18T23:19:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Spinningspark-2016-01-18T23:37:00.000Z-Mwtoews-2016-01-18T23:19:00.000Z"></span></dd></dl></dd></dl></dd></dl></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="sexagesimal_obsoletion" data-mw-thread-id="h-sexagesimal_obsoletion-2017-07-14T21:41:00.000Z"><span data-mw-comment-start="" id="h-sexagesimal_obsoletion-2017-07-14T21:41:00.000Z"></span>sexagesimal obsoletion<span data-mw-comment-end="h-sexagesimal_obsoletion-2017-07-14T21:41:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=20" title="Edit section: sexagesimal obsoletion"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Tabascofernandez-2017-07-14T21:41:00.000Z-sexagesimal_obsoletion"></span>we have sec[ond] as the 1/3600 of an hour. then we use milli-sec, micro-sec etc, good. what if we had deg[ree] as 1/360 of a revolution? then we have milli-deg, micro-deg, etc. {specifying sec as time (not any other) and deg as angle (only, e.g. 34 Ce[lsie] }<br/> </p><p><a href="/w/index.php?title=User:Tabascofernandez&action=edit&redlink=1" class="new" title="User:Tabascofernandez (page does not exist)">Tabascofernandez</a> (<a href="/wiki/User_talk:Tabascofernandez" title="User talk:Tabascofernandez">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Tabascofernandez-2017-07-14T21:41:00.000Z-sexagesimal_obsoletion" class="ext-discussiontools-init-timestamplink">21:41, 14 July 2017 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Tabascofernandez-2017-07-14T21:41:00.000Z-sexagesimal_obsoletion"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Tabascofernandez-2017-07-14T21:41:00.000Z-sexagesimal_obsoletion"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Where_does_the_approximation_of_a_football_at_775m_come_from?" data-mw-thread-id="h-Where_does_the_approximation_of_a_football_at_775m_come_from?-2018-07-02T14:06:00.000Z"><span id="Where_does_the_approximation_of_a_football_at_775m_come_from.3F"></span><span data-mw-comment-start="" id="h-Where_does_the_approximation_of_a_football_at_775m_come_from?-2018-07-02T14:06:00.000Z"></span>Where does the approximation of a football at 775m come from?<span data-mw-comment-end="h-Where_does_the_approximation_of_a_football_at_775m_come_from?-2018-07-02T14:06:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=21" title="Edit section: Where does the approximation of a football at 775m come from?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-86.151.138.137-2018-07-02T14:06:00.000Z-Where_does_the_approximation_of_a_football_at_775m_come_from?"></span>The sidebar illustration says a soccer ball (22 cm diameter) subtends an angle of 1 arcminute at a distance of approximately 775 meters. </p><p>When I calculate this I get 756 metres. Wouldn't a better "approximation" be 750 metres (or 3/4 of a kilometre)? <small class="autosigned">— Preceding <a href="/wiki/Wikipedia:Signatures" title="Wikipedia:Signatures">unsigned</a> comment added by <a href="/wiki/Special:Contributions/86.151.138.137" title="Special:Contributions/86.151.138.137">86.151.138.137</a> (<a href="/w/index.php?title=User_talk:86.151.138.137&action=edit&redlink=1" class="new" title="User talk:86.151.138.137 (page does not exist)">talk</a>) 14:06, 2 July 2018 (UTC)</small> Agreed. I saw the dubious notation and did the calculation as well and got 756.30 as well. <small class="autosigned">— Preceding <a href="/wiki/Wikipedia:Signatures" title="Wikipedia:Signatures">unsigned</a> comment added by <a href="/w/index.php?title=User:Pmsteven&action=edit&redlink=1" class="new" title="User:Pmsteven (page does not exist)">Pmsteven</a> (<a href="/w/index.php?title=User_talk:Pmsteven&action=edit&redlink=1" class="new" title="User talk:Pmsteven (page does not exist)">talk</a> • <a href="/wiki/Special:Contributions/Pmsteven" title="Special:Contributions/Pmsteven">contribs</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-86.151.138.137-2018-07-02T14:06:00.000Z-Where_does_the_approximation_of_a_football_at_775m_come_from?" class="ext-discussiontools-init-timestamplink">19:21, 3 August 2020 (UTC)</a></small><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-86.151.138.137-2018-07-02T14:06:00.000Z-Where_does_the_approximation_of_a_football_at_775m_come_from?"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-86.151.138.137-2018-07-02T14:06:00.000Z-Where_does_the_approximation_of_a_football_at_775m_come_from?"></span> </p> <dl><dd><span data-mw-comment-start="" id="c-Mwtoews-2020-08-03T21:35:00.000Z-86.151.138.137-2018-07-02T14:06:00.000Z"></span>Thanks, 0.22 / tan(radians(<style data-mw-deduplicate="TemplateStyles:r1214402035">.mw-parser-output .sfrac{white-space:nowrap}.mw-parser-output .sfrac.tion,.mw-parser-output .sfrac .tion{display:inline-block;vertical-align:-0.5em;font-size:85%;text-align:center}.mw-parser-output .sfrac .num{display:block;line-height:1em;margin:0.0em 0.1em;border-bottom:1px solid}.mw-parser-output .sfrac .den{display:block;line-height:1em;margin:0.1em 0.1em}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">60</span></span>⁠</span>)) = 756.30 m or approximately 750 m. Now removing dubious tag. <samp>+<a href="/wiki/User:Mwtoews" title="User:Mwtoews"><span style="color: #008000;">m</span></a><a href="/wiki/User_talk:Mwtoews" title="User talk:Mwtoews"><span style="color: #6B3FA0;">t</span></a></samp> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Mwtoews-2020-08-03T21:35:00.000Z-86.151.138.137-2018-07-02T14:06:00.000Z" class="ext-discussiontools-init-timestamplink">21:35, 3 August 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Mwtoews-2020-08-03T21:35:00.000Z-86.151.138.137-2018-07-02T14:06:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Mwtoews-2020-08-03T21:35:00.000Z-86.151.138.137-2018-07-02T14:06:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-Peter_M._Brown-2020-08-04T14:09:00.000Z-Mwtoews-2020-08-03T21:35:00.000Z"></span>Changed legend from 750 to 756 meters – why be more approximate than necessary? But now the legend disagrees with the diagram! <a href="/wiki/User:Peter_M._Brown" title="User:Peter M. Brown">Peter Brown</a> (<a href="/wiki/User_talk:Peter_M._Brown" title="User talk:Peter M. Brown">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Peter_M._Brown-2020-08-04T14:09:00.000Z-Mwtoews-2020-08-03T21:35:00.000Z" class="ext-discussiontools-init-timestamplink">14:09, 4 August 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Peter_M._Brown-2020-08-04T14:09:00.000Z-Mwtoews-2020-08-03T21:35:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Peter_M._Brown-2020-08-04T14:09:00.000Z-Mwtoews-2020-08-03T21:35:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-Mwtoews-2020-08-05T02:59:00.000Z-Peter_M._Brown-2020-08-04T14:09:00.000Z"></span>Updated image to say 756 m. <samp>+<a href="/wiki/User:Mwtoews" title="User:Mwtoews"><span style="color: #008000;">m</span></a><a href="/wiki/User_talk:Mwtoews" title="User talk:Mwtoews"><span style="color: #6B3FA0;">t</span></a></samp> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Mwtoews-2020-08-05T02:59:00.000Z-Peter_M._Brown-2020-08-04T14:09:00.000Z" class="ext-discussiontools-init-timestamplink">02:59, 5 August 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Mwtoews-2020-08-05T02:59:00.000Z-Peter_M._Brown-2020-08-04T14:09:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Mwtoews-2020-08-05T02:59:00.000Z-Peter_M._Brown-2020-08-04T14:09:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-Peter_M._Brown-2020-08-05T17:51:00.000Z-Mwtoews-2020-08-05T02:59:00.000Z"></span>Well done! Good that somebody following this knows how to update an image. Perhaps the diagram <a class="external text" href="https://en.wikipedia.org/wiki/File:Race_between_Achilles_and_the_tortoise.gif">File:Race between Achilles and the tortoise.gif</a>, used in <a href="/wiki/Achilles_and_the_tortoise" class="mw-redirect" title="Achilles and the tortoise">Achilles and the tortoise</a>, can be addressed? It supposes that a tortoise runs at 5 m/s, which is an unreasonable speed for a tortoise. The <a rel="nofollow" class="external text" href="https://www.guinnessworldrecords.com/news/2015/9/record-holder-profile-video-bertie-the-fastest-tortoise-395633/">Guinness world record</a> is 0.28 m/s. I have edited the text to suppose that the tortoise runs more slowly, but I have no idea how to alter the diagram. Perhaps there is a Wikipedia project devoted to fixing images? <a href="/wiki/User:Peter_M._Brown" title="User:Peter M. Brown">Peter Brown</a> (<a href="/wiki/User_talk:Peter_M._Brown" title="User talk:Peter M. Brown">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Peter_M._Brown-2020-08-05T17:51:00.000Z-Mwtoews-2020-08-05T02:59:00.000Z" class="ext-discussiontools-init-timestamplink">17:51, 5 August 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Peter_M._Brown-2020-08-05T17:51:00.000Z-Mwtoews-2020-08-05T02:59:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Peter_M._Brown-2020-08-05T17:51:00.000Z-Mwtoews-2020-08-05T02:59:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-Mwtoews-2020-08-06T01:50:00.000Z-Peter_M._Brown-2020-08-05T17:51:00.000Z"></span>For that GIF, I'd suggest commenting on <a href="https://commons.wikimedia.org/wiki/File_talk:Race_between_Achilles_and_the_tortoise.gif" class="extiw" title="commons:File talk:Race between Achilles and the tortoise.gif">commons:File talk:Race between Achilles and the tortoise.gif</a> to note the error/correction. Otherwise, you could suggest this to <a href="https://commons.wikimedia.org/wiki/Commons:Graphic_Lab/Illustration_workshop" class="extiw" title="commons:Commons:Graphic Lab/Illustration workshop">commons:Commons:Graphic Lab/Illustration workshop</a> for someone to take a look at. These edits are much easier if the source image is SVG. I.e., this article would be improved if the figure were re-drafted with Inkscape. <samp>+<a href="/wiki/User:Mwtoews" title="User:Mwtoews"><span style="color: #008000;">m</span></a><a href="/wiki/User_talk:Mwtoews" title="User talk:Mwtoews"><span style="color: #6B3FA0;">t</span></a></samp> <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Mwtoews-2020-08-06T01:50:00.000Z-Peter_M._Brown-2020-08-05T17:51:00.000Z" class="ext-discussiontools-init-timestamplink">01:50, 6 August 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Mwtoews-2020-08-06T01:50:00.000Z-Peter_M._Brown-2020-08-05T17:51:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Mwtoews-2020-08-06T01:50:00.000Z-Peter_M._Brown-2020-08-05T17:51:00.000Z"></span> <dl><dd><span data-mw-comment-start="" id="c-Peter_M._Brown-2020-08-06T03:04:00.000Z-Mwtoews-2020-08-06T01:50:00.000Z"></span>Thanks, I'll do both. <a href="/wiki/User:Peter_M._Brown" title="User:Peter M. Brown">Peter Brown</a> (<a href="/wiki/User_talk:Peter_M._Brown" title="User talk:Peter M. Brown">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Peter_M._Brown-2020-08-06T03:04:00.000Z-Mwtoews-2020-08-06T01:50:00.000Z" class="ext-discussiontools-init-timestamplink">03:04, 6 August 2020 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Peter_M._Brown-2020-08-06T03:04:00.000Z-Mwtoews-2020-08-06T01:50:00.000Z"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Peter_M._Brown-2020-08-06T03:04:00.000Z-Mwtoews-2020-08-06T01:50:00.000Z"></span></dd></dl></dd></dl></dd></dl></dd></dl></dd></dl></dd></dl> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Beware_flat-earther_misinterpretation" data-mw-thread-id="h-Beware_flat-earther_misinterpretation-2021-11-26T21:45:00.000Z"><span data-mw-comment-start="" id="h-Beware_flat-earther_misinterpretation-2021-11-26T21:45:00.000Z"></span>Beware flat-earther misinterpretation<span data-mw-comment-end="h-Beware_flat-earther_misinterpretation-2021-11-26T21:45:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=22" title="Edit section: Beware flat-earther misinterpretation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Scwarebang-2021-11-26T21:45:00.000Z-Beware_flat-earther_misinterpretation"></span>Were it not for the growing presence of <a href="/wiki/Flat_Earth#Internet-era_resurgence" title="Flat Earth">flat earth conspiracy theorists</a>, I would not be sensitive to the statement, which appears in a list of examples, that </p> <dl><dd>A milliarcsecond is about the size of a dime atop the Eiffel Tower, as seen from New York City.</dd></dl> <p>Of course this is misleading because a dime at the top of the Eiffel Tower could not be seen from New York even on a perfectly clear day with infinite visibility because of the curvature of the earth. Putting the dime on top of the tower doesn't help. </p><p>It's also ambiguous because it doesn't specify whether the distance between the cities is along the planet's surface as the crow flies, or through the earth as the neutrino flies (which is about 210 km shorter than the air travel distance of 5853 km). </p><p>The last problem with this example is that it is not numerically accurate. A milliarcsecond is bigger than the example supposes. The <a href="/wiki/United_States_Mint" title="United States Mint">United States Mint</a> says the diameter of a <a href="/wiki/Dime_(United_States_coin)" title="Dime (United States coin)">dime</a> is 17.91 mm<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>. At the distance between Paris and New York, a dime would subtend an angle of only about 0.63 or 0.65 milliarcseconds, depending on whether the dime was viewed by <a href="/wiki/X:_The_Man_with_the_X-ray_Eyes" title="X: The Man with the X-ray Eyes">Ray Milland</a> or by light somehow bending around the Earth's surface. </p><p>A better example might be </p> <dl><dd>A milliarcsecond is about the size of a <a href="/wiki/Half_dollar_(United_States_coin)" title="Half dollar (United States coin)">half dollar</a>, seen from a distance equal to that between the <a href="/wiki/Washington_Monument" title="Washington Monument">Washington Monument</a> and the <a href="/wiki/Eiffel_Tower" title="Eiffel Tower">Eiffel Tower</a>.</dd></dl> <p>Given that the <a href="/wiki/Eiffel_Tower" title="Eiffel Tower">Eiffel_Tower</a> is at 48°51′29.6″N 2°17′40.2″E and the <a href="/wiki/Washington_Monument" title="Washington Monument">Washington_Monument</a> is at 38°53′22″N 77°2′7″W, the <a href="/wiki/Great-circle_distance" title="Great-circle distance">great-circle distance</a> between them is 6162 km computed using the <a href="/wiki/Haversine_formula" title="Haversine formula">haversine formula</a> for shortest surface distance<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>. As the U.S. Mint describes a half dollar as 30.61 mm in diameter, the angle would be <a href="/wiki/Inverse_trigonometric_functions" title="Inverse trigonometric functions">arctangent</a>(30.61 mm / 6162 km) ≈ 1.025 milliarcseconds. </p><p>By the way, the article actually does not seem to say anywhere how the angles are computed, but a better formula would be 2×arctangent(<i>d</i>/(2<i>D</i>)), where <i>d</i> is the diameter of the object viewed and <i>D</i> is the distance from the observer to the center of the object, rather than simply arctangent(<i>d</i>/<i>D</i>). For these numerical examples, the discrepancy is negligible, but it would become signficant when <i>d</i> and <i>D</i> become more similar in size. </p><p>--<a href="/wiki/User:Scwarebang" title="User:Scwarebang">Scwarebang</a> (<a href="/wiki/User_talk:Scwarebang" title="User talk:Scwarebang">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Scwarebang-2021-11-26T21:45:00.000Z-Beware_flat-earther_misinterpretation" class="ext-discussiontools-init-timestamplink">21:45, 26 November 2021 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Scwarebang-2021-11-26T21:45:00.000Z-Beware_flat-earther_misinterpretation"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Scwarebang-2021-11-26T21:45:00.000Z-Beware_flat-earther_misinterpretation"></span> </p> <style data-mw-deduplicate="TemplateStyles:r1232521257">.mw-parser-output .reflist-talk{margin:auto 0;border:1px dashed var(--border-color-base,#a2a9b1);padding:4px;padding-left:1em}.mw-parser-output .reflist-talk-title{font-weight:bold}</style><div class="reflist-talk"> <p class="reflist-talk-title">References</p> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external free" href="https://www.usmint.gov/learn/coin-and-medal-programs/coin-specifications">https://www.usmint.gov/learn/coin-and-medal-programs/coin-specifications</a></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external free" href="https://www.movable-type.co.uk/scripts/latlong.html">https://www.movable-type.co.uk/scripts/latlong.html</a></span> </li> </ol></div></div> </div> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="A_Commons_file_used_on_this_page_or_its_Wikidata_item_has_been_nominated_for_deletion" data-mw-thread-id="h-A_Commons_file_used_on_this_page_or_its_Wikidata_item_has_been_nominated_for_del-2022-01-07T22:40:00.000Z"><span data-mw-comment-start="" id="h-A_Commons_file_used_on_this_page_or_its_Wikidata_item_has_been_nominated_for_del-2022-01-07T22:40:00.000Z"></span>A Commons file used on this page or its Wikidata item has been nominated for deletion<span data-mw-comment-end="h-A_Commons_file_used_on_this_page_or_its_Wikidata_item_has_been_nominated_for_del-2022-01-07T22:40:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=23" title="Edit section: A Commons file used on this page or its Wikidata item has been nominated for deletion"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Community_Tech_bot-2022-01-07T22:40:00.000Z-A_Commons_file_used_on_this_page_or_its_Wikidata_item_has_been_nominated_for_del"></span>The following Wikimedia Commons file used on this page or its Wikidata item has been nominated for deletion: </p> <ul><li><a href="https://commons.wikimedia.org/wiki/File:International_System_of_Units_Logo.png" class="extiw" title="commons:File:International System of Units Logo.png">International System of Units Logo.png</a></li></ul> <p>Participate in the deletion discussion at the <a href="https://commons.wikimedia.org/wiki/Commons:Deletion_requests/File:International_System_of_Units_Logo.png" class="extiw" title="commons:Commons:Deletion requests/File:International System of Units Logo.png">nomination page</a>. —<a href="/wiki/User:Community_Tech_bot" title="User:Community Tech bot">Community Tech bot</a> (<a href="/wiki/User_talk:Community_Tech_bot" title="User talk:Community Tech bot">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Community_Tech_bot-2022-01-07T22:40:00.000Z-A_Commons_file_used_on_this_page_or_its_Wikidata_item_has_been_nominated_for_del" class="ext-discussiontools-init-timestamplink">22:40, 7 January 2022 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Community_Tech_bot-2022-01-07T22:40:00.000Z-A_Commons_file_used_on_this_page_or_its_Wikidata_item_has_been_nominated_for_del"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Community_Tech_bot-2022-01-07T22:40:00.000Z-A_Commons_file_used_on_this_page_or_its_Wikidata_item_has_been_nominated_for_del"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Infobox_for_arcminute_but_not_for_arcsecond" data-mw-thread-id="h-Infobox_for_arcminute_but_not_for_arcsecond-2022-06-05T18:58:00.000Z"><span data-mw-comment-start="" id="h-Infobox_for_arcminute_but_not_for_arcsecond-2022-06-05T18:58:00.000Z"></span>Infobox for arcminute but not for arcsecond<span data-mw-comment-end="h-Infobox_for_arcminute_but_not_for_arcsecond-2022-06-05T18:58:00.000Z"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=24" title="Edit section: Infobox for arcminute but not for arcsecond"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-Wootery-2022-06-05T18:58:00.000Z-Infobox_for_arcminute_but_not_for_arcsecond"></span>The article is meant to cover both the arcminute and the arcsecond, but the infobox only covers the arcminute. </p><p><a href="/wiki/User:Wootery" title="User:Wootery">Wootery</a> (<a href="/wiki/User_talk:Wootery" title="User talk:Wootery">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-Wootery-2022-06-05T18:58:00.000Z-Infobox_for_arcminute_but_not_for_arcsecond" class="ext-discussiontools-init-timestamplink">18:58, 5 June 2022 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-Wootery-2022-06-05T18:58:00.000Z-Infobox_for_arcminute_but_not_for_arcsecond"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-Wootery-2022-06-05T18:58:00.000Z-Infobox_for_arcminute_but_not_for_arcsecond"></span> </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Vandalism!" data-mw-thread-id="h-Vandalism!-20230308212100"><span id="Vandalism.21"></span><span data-mw-comment-start="" id="h-Vandalism!-20230308212100"></span>Vandalism!<span data-mw-comment-end="h-Vandalism!-20230308212100"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Talk:Minute_and_second_of_arc&action=edit&section=25" title="Edit section: Vandalism!"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span><div class="ext-discussiontools-init-section-bar"><div class="ext-discussiontools-init-section-metadata"></div><div class="ext-discussiontools-init-section-actions"></div></div></div> <p><span data-mw-comment-start="" id="c-174.130.71.156-20230308212100-Vandalism!"></span>The article seems to have been vandalized. Worse yet, the INCORRECT definition here is the first definition brought up in a number of browsers! An arc minute is 1/60th of a degree! Not 1/3600th!!! The subsequently derived numbers are also, therefore wrong. It seems to be an intentional vandalism, since the definition of an arcsecond is identical (and correct).<a href="/wiki/Special:Contributions/174.130.71.156" title="Special:Contributions/174.130.71.156">174.130.71.156</a> (<a href="/w/index.php?title=User_talk:174.130.71.156&action=edit&redlink=1" class="new" title="User talk:174.130.71.156 (page does not exist)">talk</a>) <a href="https://en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc#c-174.130.71.156-20230308212100-Vandalism!" class="ext-discussiontools-init-timestamplink">21:21, 8 March 2023 (UTC)</a><span class="ext-discussiontools-init-replylink-buttons" data-mw-thread-id="c-174.130.71.156-20230308212100-Vandalism!"><span class="ext-discussiontools-init-replylink-bracket">[</span><a class="ext-discussiontools-init-replylink-reply" role="button" tabindex="0" href="">reply</a><span class="ext-discussiontools-init-replylink-bracket">]</span></span><span data-mw-comment-end="c-174.130.71.156-20230308212100-Vandalism!"></span> </p>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Talk:Minute_and_second_of_arc&oldid=1193931374">https://en.wikipedia.org/w/index.php?title=Talk:Minute_and_second_of_arc&oldid=1193931374</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Start-Class_level-5_vital_articles" title="Category:Start-Class level-5 vital articles">Start-Class level-5 vital articles</a></li><li><a href="/wiki/Category:Wikipedia_level-5_vital_articles_in_Physical_sciences" title="Category:Wikipedia level-5 vital articles in Physical sciences">Wikipedia level-5 vital articles in Physical sciences</a></li><li><a href="/wiki/Category:Start-Class_vital_articles_in_Physical_sciences" title="Category:Start-Class vital articles in Physical sciences">Start-Class vital articles in Physical sciences</a></li><li><a href="/wiki/Category:C-Class_articles_with_conflicting_quality_ratings" title="Category:C-Class articles with conflicting quality ratings">C-Class articles with conflicting quality ratings</a></li><li><a href="/wiki/Category:C-Class_Astronomy_articles" title="Category:C-Class Astronomy articles">C-Class Astronomy articles</a></li><li><a href="/wiki/Category:High-importance_Astronomy_articles" title="Category:High-importance Astronomy articles">High-importance Astronomy articles</a></li><li><a href="/wiki/Category:C-Class_Astronomy_articles_of_High-importance" title="Category:C-Class Astronomy articles of High-importance">C-Class Astronomy articles of High-importance</a></li><li><a href="/wiki/Category:Start-Class_Firearms_articles" title="Category:Start-Class Firearms articles">Start-Class Firearms articles</a></li><li><a href="/wiki/Category:Low-importance_Firearms_articles" title="Category:Low-importance Firearms articles">Low-importance Firearms articles</a></li><li><a href="/wiki/Category:WikiProject_Firearms_articles" title="Category:WikiProject Firearms articles">WikiProject Firearms articles</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden category: <ul><li><a href="/wiki/Category:All_Wikipedia_vital_articles" title="Category:All Wikipedia vital articles">All Wikipedia vital articles</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 6 January 2024, at 09:43<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. By using this site, you agree to the <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use" class="extiw" title="foundation:Special:MyLanguage/Policy:Terms of Use">Terms of Use</a> and <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy" class="extiw" title="foundation:Special:MyLanguage/Policy:Privacy policy">Privacy Policy</a>. Wikipedia® is a registered trademark of the <a rel="nofollow" class="external text" href="https://wikimediafoundation.org/">Wikimedia Foundation, Inc.</a>, a non-profit organization.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Privacy policy</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:About">About Wikipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:General_disclaimer">Disclaimers</a></li> <li id="footer-places-contact"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us">Contact Wikipedia</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Code of Conduct</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Developers</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/en.wikipedia.org">Statistics</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Cookie statement</a></li> <li id="footer-places-mobileview"><a href="//en.m.wikipedia.org/w/index.php?title=Talk:Minute_and_second_of_arc&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Mobile view</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-f69cdc8f6-szq4t","wgBackendResponseTime":168,"wgDiscussionToolsPageThreads":[{"headingLevel":2,"name":"h-DeclinedShadow-2009-07-17T02:50:00.000Z","type":"heading","level":0,"id":"h-Number_of_square_arcminutes_in_a_sphere-2009-07-17T02:50:00.000Z","replies":[{"timestamp":"2009-07-17T02:50:00.000Z","author":"DeclinedShadow","type":"comment","level":1,"id":"c-DeclinedShadow-2009-07-17T02:50:00.000Z-Number_of_square_arcminutes_in_a_sphere","replies":[],"displayName":"User:DeclinedShadow"},{"timestamp":"2009-08-02T03:52:00.000Z","author":"DeclinedShadow","type":"comment","level":1,"id":"c-DeclinedShadow-2009-08-02T03:52:00.000Z-Number_of_square_arcminutes_in_a_sphere","replies":[],"displayName":"User:DeclinedShadow"}]},{"headingLevel":2,"name":"h-","type":"heading","level":0,"id":"h-from_original_article,_\"Arc_of_Minute\"","replies":[]},{"headingLevel":2,"name":"h-MHD-2006-02-03T11:04:00.000Z","type":"heading","level":0,"id":"h-merge_arcminute_and_arcsecond_articles-2006-02-03T11:04:00.000Z","replies":[{"timestamp":"2006-02-03T11:04:00.000Z","author":"MHD","type":"comment","level":1,"id":"c-MHD-2006-02-03T11:04:00.000Z-merge_arcminute_and_arcsecond_articles","replies":[{"timestamp":"2006-02-08T04:49:00.000Z","author":"Zandperl","type":"comment","level":2,"id":"c-Zandperl-2006-02-08T04:49:00.000Z-MHD-2006-02-03T11:04:00.000Z","replies":[]}]},{"timestamp":"2006-02-08T09:56:00.000Z","author":"MHD","type":"comment","level":1,"id":"c-MHD-2006-02-08T09:56:00.000Z-merge_arcminute_and_arcsecond_articles","replies":[{"timestamp":"2006-03-26T21:09:00.000Z","author":"MHD","type":"comment","level":2,"id":"c-MHD-2006-03-26T21:09:00.000Z-MHD-2006-02-08T09:56:00.000Z","replies":[]}]}]},{"headingLevel":2,"name":"h-MHD-2006-02-04T11:35:00.000Z","type":"heading","level":0,"id":"h-other_uses_of_arcminutes_and_arcseconds-2006-02-04T11:35:00.000Z","replies":[{"timestamp":"2006-02-04T11:35:00.000Z","author":"MHD","type":"comment","level":1,"id":"c-MHD-2006-02-04T11:35:00.000Z-other_uses_of_arcminutes_and_arcseconds","replies":[{"timestamp":"2006-02-04T15:12:00.000Z","author":"Zandperl","type":"comment","level":2,"id":"c-Zandperl-2006-02-04T15:12:00.000Z-MHD-2006-02-04T11:35:00.000Z","replies":[]}]}]},{"headingLevel":2,"name":"h-Mysterd429-2006-02-19T20:13:00.000Z","type":"heading","level":0,"id":"h-Visual_Acuity_Under_Cartography?-2006-02-19T20:13:00.000Z","replies":[{"timestamp":"2006-02-19T20:13:00.000Z","author":"Mysterd429","type":"comment","level":1,"id":"c-Mysterd429-2006-02-19T20:13:00.000Z-Visual_Acuity_Under_Cartography?","replies":[],"displayName":"Don"}]},{"headingLevel":2,"name":"h-MHD-2006-04-18T12:18:00.000Z","type":"heading","level":0,"id":"h-Right_ascension_in_cartography-2006-04-18T12:18:00.000Z","replies":[{"timestamp":"2006-04-18T12:18:00.000Z","author":"MHD","type":"comment","level":1,"id":"c-MHD-2006-04-18T12:18:00.000Z-Right_ascension_in_cartography","replies":[]}]},{"headingLevel":2,"name":"h-JohnMc-2008-08-01T00:10:00.000Z","type":"heading","level":0,"id":"h-Incorrect_formula?-2008-08-01T00:10:00.000Z","replies":[{"timestamp":"2008-08-01T00:10:00.000Z","author":"JohnMc","type":"comment","level":1,"id":"c-JohnMc-2008-08-01T00:10:00.000Z-Incorrect_formula?","replies":[]},{"headingLevel":3,"name":"h-Peter_M._Brown-2019-12-23T16:28:00.000Z","type":"heading","level":0,"id":"h-Different_interpretations_of_1′_at_100_yards_yield_differences_too_tiny_to_be-Incorrect_formula?-2019-12-23T16:28:00.000Z","replies":[{"timestamp":"2019-12-23T16:28:00.000Z","author":"Peter M. Brown","type":"comment","level":1,"id":"c-Peter_M._Brown-2019-12-23T16:28:00.000Z-Different_interpretations_of_1′_at_100_yards_yield_differences_too_tiny_to_be","replies":[],"displayName":"Peter Brown"}]}]},{"headingLevel":2,"name":"h-62.248.159.240-2007-04-28T17:05:00.000Z","type":"heading","level":0,"id":"h-This_is_incorrect?-2007-04-28T17:05:00.000Z","replies":[{"timestamp":"2007-04-28T17:05:00.000Z","author":"62.248.159.240","type":"comment","level":1,"id":"c-62.248.159.240-2007-04-28T17:05:00.000Z-This_is_incorrect?","replies":[]},{"timestamp":"2007-07-09T19:57:00.000Z","author":"Arthurrh","type":"comment","level":1,"id":"c-Arthurrh-2007-07-09T19:57:00.000Z-This_is_incorrect?","replies":[]},{"timestamp":"2011-02-12T20:10:00.000Z","author":"188.142.56.253","type":"comment","level":1,"id":"c-188.142.56.253-2011-02-12T20:10:00.000Z-This_is_incorrect?","replies":[]},{"timestamp":"2017-07-14T21:51:00.000Z","author":"Tabascofernandez","type":"comment","level":1,"id":"c-Tabascofernandez-2017-07-14T21:51:00.000Z-This_is_incorrect?","replies":[]},{"timestamp":"2020-01-01T21:29:00.000Z","author":"Cross Reference","type":"comment","level":1,"id":"c-Cross_Reference-2020-01-01T21:29:00.000Z-This_is_incorrect?","replies":[]}]},{"headingLevel":2,"name":"h-67.142.130.45-2007-04-29T04:39:00.000Z","type":"heading","level":0,"id":"h-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m-2007-04-29T04:39:00.000Z","replies":[{"timestamp":"2007-04-29T04:39:00.000Z","author":"67.142.130.45","type":"comment","level":1,"id":"c-67.142.130.45-2007-04-29T04:39:00.000Z-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m","replies":[]},{"timestamp":"2017-07-14T22:16:00.000Z","author":"Tabascofernandez","type":"comment","level":1,"id":"c-Tabascofernandez-2017-07-14T22:16:00.000Z-Minute_of_arc_is_standard_terminology_in_astronomy;_arcseconds_not_really_well-m","replies":[]}]},{"headingLevel":2,"name":"h-69.140.192.220-2009-04-09T03:44:00.000Z","type":"heading","level":0,"id":"h-Minute_of_Arc,_The_band-2009-04-09T03:44:00.000Z","replies":[{"timestamp":"2009-04-09T03:44:00.000Z","author":"69.140.192.220","type":"comment","level":1,"id":"c-69.140.192.220-2009-04-09T03:44:00.000Z-Minute_of_Arc,_The_band","replies":[]}]},{"headingLevel":2,"name":"h-DeNoel-2010-07-01T07:50:00.000Z","type":"heading","level":0,"id":"h-Race_Elapsed_Time-2010-07-01T07:50:00.000Z","replies":[{"timestamp":"2010-07-01T07:50:00.000Z","author":"DeNoel","type":"comment","level":1,"id":"c-DeNoel-2010-07-01T07:50:00.000Z-Race_Elapsed_Time","replies":[{"timestamp":"2010-08-29T09:36:00.000Z","author":"M3tainfo","type":"comment","level":2,"id":"c-M3tainfo-2010-08-29T09:36:00.000Z-DeNoel-2010-07-01T07:50:00.000Z","replies":[],"displayName":"M3TA"}],"displayName":"Christopher, Salem, OR"}]},{"headingLevel":2,"name":"h-Rs2-2010-07-29T20:35:00.000Z","type":"heading","level":0,"id":"h-Unit_conversions_valid-2010-07-29T20:35:00.000Z","replies":[{"timestamp":"2010-07-29T20:35:00.000Z","author":"Rs2","type":"comment","level":1,"id":"c-Rs2-2010-07-29T20:35:00.000Z-Unit_conversions_valid","replies":[{"timestamp":"2010-08-29T09:36:00.000Z","author":"M3tainfo","type":"comment","level":2,"id":"c-M3tainfo-2010-08-29T09:36:00.000Z-Rs2-2010-07-29T20:35:00.000Z","replies":[],"displayName":"M3TA"}]}]},{"headingLevel":2,"name":"h-AliveFreeHappy-2010-10-06T20:55:00.000Z","type":"heading","level":0,"id":"h-Merge-2010-10-06T20:55:00.000Z","replies":[{"timestamp":"2010-10-06T20:55:00.000Z","author":"AliveFreeHappy","type":"comment","level":1,"id":"c-AliveFreeHappy-2010-10-06T20:55:00.000Z-Merge","replies":[{"timestamp":"2010-10-19T00:25:00.000Z","author":"OtterSmith","type":"comment","level":2,"id":"c-OtterSmith-2010-10-19T00:25:00.000Z-AliveFreeHappy-2010-10-06T20:55:00.000Z","replies":[],"displayName":"htom"}]}]},{"headingLevel":2,"name":"h-Gwideman-2011-06-08T01:14:00.000Z","type":"heading","level":0,"id":"h-Error:_Reason_for_\"not_SI\"-2011-06-08T01:14:00.000Z","replies":[{"timestamp":"2011-06-08T01:14:00.000Z","author":"Gwideman","type":"comment","level":1,"id":"c-Gwideman-2011-06-08T01:14:00.000Z-Error:_Reason_for_\"not_SI\"","replies":[]}]},{"headingLevel":2,"name":"h-71.109.153.28-2012-02-06T04:17:00.000Z","type":"heading","level":0,"id":"h-Someone_please_fix_the_recursive_self-linking-2012-02-06T04:17:00.000Z","replies":[{"timestamp":"2012-02-06T04:17:00.000Z","author":"71.109.153.28","type":"comment","level":1,"id":"c-71.109.153.28-2012-02-06T04:17:00.000Z-Someone_please_fix_the_recursive_self-linking","replies":[]}]},{"headingLevel":2,"name":"h-Daqu-2012-04-25T02:09:00.000Z","type":"heading","level":0,"id":"h-Shouldn't_prad,_etc.,_be_defined_in_this_article?-2012-04-25T02:09:00.000Z","replies":[{"timestamp":"2012-04-25T02:09:00.000Z","author":"Daqu","type":"comment","level":1,"id":"c-Daqu-2012-04-25T02:09:00.000Z-Shouldn't_prad,_etc.,_be_defined_in_this_article?","replies":[]}]},{"headingLevel":2,"name":"h-Scs-2015-12-17T18:08:00.000Z","type":"heading","level":0,"id":"h-Table_in_\"Symbols_and_abbreviations\"_section_is_wrong-2015-12-17T18:08:00.000Z","replies":[{"timestamp":"2015-12-17T18:08:00.000Z","author":"Scs","type":"comment","level":1,"id":"c-Scs-2015-12-17T18:08:00.000Z-Table_in_\"Symbols_and_abbreviations\"_section_is_wrong","replies":[],"displayName":"Steve Summit"}]},{"headingLevel":2,"name":"h-MeUser42-2016-01-18T11:13:00.000Z","type":"heading","level":0,"id":"h-Can't_link_page_to_other_wikipedias-2016-01-18T11:13:00.000Z","replies":[{"timestamp":"2016-01-18T11:13:00.000Z","author":"MeUser42","type":"comment","level":1,"id":"c-MeUser42-2016-01-18T11:13:00.000Z-Can't_link_page_to_other_wikipedias","replies":[{"timestamp":"2016-01-18T21:03:00.000Z","author":"Spinningspark","type":"comment","level":2,"id":"c-Spinningspark-2016-01-18T21:03:00.000Z-MeUser42-2016-01-18T11:13:00.000Z","replies":[{"timestamp":"2016-01-18T23:19:00.000Z","author":"Mwtoews","type":"comment","level":4,"id":"c-Mwtoews-2016-01-18T23:19:00.000Z-Spinningspark-2016-01-18T21:03:00.000Z","replies":[{"timestamp":"2016-01-18T23:37:00.000Z","author":"Spinningspark","type":"comment","level":5,"id":"c-Spinningspark-2016-01-18T23:37:00.000Z-Mwtoews-2016-01-18T23:19:00.000Z","replies":[],"displayName":"Spinning"}],"displayName":"m"}],"displayName":"Spinning"}]}]},{"headingLevel":2,"name":"h-Tabascofernandez-2017-07-14T21:41:00.000Z","type":"heading","level":0,"id":"h-sexagesimal_obsoletion-2017-07-14T21:41:00.000Z","replies":[{"timestamp":"2017-07-14T21:41:00.000Z","author":"Tabascofernandez","type":"comment","level":1,"id":"c-Tabascofernandez-2017-07-14T21:41:00.000Z-sexagesimal_obsoletion","replies":[]}]},{"headingLevel":2,"name":"h-86.151.138.137-2018-07-02T14:06:00.000Z","type":"heading","level":0,"id":"h-Where_does_the_approximation_of_a_football_at_775m_come_from?-2018-07-02T14:06:00.000Z","replies":[{"timestamp":"2018-07-02T14:06:00.000Z","author":"86.151.138.137","type":"comment","level":1,"id":"c-86.151.138.137-2018-07-02T14:06:00.000Z-Where_does_the_approximation_of_a_football_at_775m_come_from?","replies":[{"timestamp":"2020-08-03T21:35:00.000Z","author":"Mwtoews","type":"comment","level":2,"id":"c-Mwtoews-2020-08-03T21:35:00.000Z-86.151.138.137-2018-07-02T14:06:00.000Z","replies":[{"timestamp":"2020-08-04T14:09:00.000Z","author":"Peter M. Brown","type":"comment","level":3,"id":"c-Peter_M._Brown-2020-08-04T14:09:00.000Z-Mwtoews-2020-08-03T21:35:00.000Z","replies":[{"timestamp":"2020-08-05T02:59:00.000Z","author":"Mwtoews","type":"comment","level":4,"id":"c-Mwtoews-2020-08-05T02:59:00.000Z-Peter_M._Brown-2020-08-04T14:09:00.000Z","replies":[{"timestamp":"2020-08-05T17:51:00.000Z","author":"Peter M. Brown","type":"comment","level":5,"id":"c-Peter_M._Brown-2020-08-05T17:51:00.000Z-Mwtoews-2020-08-05T02:59:00.000Z","replies":[{"timestamp":"2020-08-06T01:50:00.000Z","author":"Mwtoews","type":"comment","level":6,"id":"c-Mwtoews-2020-08-06T01:50:00.000Z-Peter_M._Brown-2020-08-05T17:51:00.000Z","replies":[{"timestamp":"2020-08-06T03:04:00.000Z","author":"Peter M. Brown","type":"comment","level":7,"id":"c-Peter_M._Brown-2020-08-06T03:04:00.000Z-Mwtoews-2020-08-06T01:50:00.000Z","replies":[],"displayName":"Peter Brown"}],"displayName":"m"}],"displayName":"Peter Brown"}],"displayName":"m"}],"displayName":"Peter Brown"}],"displayName":"m"}]}]},{"headingLevel":2,"name":"h-Scwarebang-2021-11-26T21:45:00.000Z","type":"heading","level":0,"id":"h-Beware_flat-earther_misinterpretation-2021-11-26T21:45:00.000Z","replies":[{"timestamp":"2021-11-26T21:45:00.000Z","author":"Scwarebang","type":"comment","level":1,"id":"c-Scwarebang-2021-11-26T21:45:00.000Z-Beware_flat-earther_misinterpretation","replies":[]}]},{"headingLevel":2,"name":"h-Community_Tech_bot-2022-01-07T22:40:00.000Z","type":"heading","level":0,"id":"h-A_Commons_file_used_on_this_page_or_its_Wikidata_item_has_been_nominated_for_del-2022-01-07T22:40:00.000Z","replies":[{"timestamp":"2022-01-07T22:40:00.000Z","author":"Community Tech bot","type":"comment","level":1,"id":"c-Community_Tech_bot-2022-01-07T22:40:00.000Z-A_Commons_file_used_on_this_page_or_its_Wikidata_item_has_been_nominated_for_del","replies":[]}]},{"headingLevel":2,"name":"h-Wootery-2022-06-05T18:58:00.000Z","type":"heading","level":0,"id":"h-Infobox_for_arcminute_but_not_for_arcsecond-2022-06-05T18:58:00.000Z","replies":[{"timestamp":"2022-06-05T18:58:00.000Z","author":"Wootery","type":"comment","level":1,"id":"c-Wootery-2022-06-05T18:58:00.000Z-Infobox_for_arcminute_but_not_for_arcsecond","replies":[]}]},{"headingLevel":2,"name":"h-174.130.71.156-20230308212100","type":"heading","level":0,"id":"h-Vandalism!-20230308212100","replies":[{"timestamp":"20230308212100","author":"174.130.71.156","type":"comment","level":1,"id":"c-174.130.71.156-20230308212100-Vandalism!","replies":[]}]}],"wgPageParseReport":{"discussiontools":{"limitreport-timeusage":"0.051"},"limitreport":{"cputime":"0.383","walltime":"0.493","ppvisitednodes":{"value":1019,"limit":1000000},"postexpandincludesize":{"value":24499,"limit":2097152},"templateargumentsize":{"value":96,"limit":2097152},"expansiondepth":{"value":12,"limit":100},"expensivefunctioncount":{"value":12,"limit":500},"unstrip-depth":{"value":0,"limit":20},"unstrip-size":{"value":24779,"limit":5000000},"entityaccesscount":{"value":0,"limit":400},"timingprofile":["100.00% 290.086 1 -total"," 85.66% 248.496 1 Template:WikiProject_banner_shell"," 39.42% 114.353 1 Template:WikiProject_Astronomy"," 6.52% 18.907 1 Template:Reflist-talk"," 5.07% 14.706 1 Template:WikiProject_Measurement"," 4.80% 13.924 1 Template:Reflist"," 4.03% 11.683 1 Template:Sfrac"," 3.94% 11.421 1 Template:WikiProject_Firearms"," 2.69% 7.808 1 Template:Anchor"," 0.90% 2.620 2 Template:Para"]},"scribunto":{"limitreport-timeusage":{"value":"0.179","limit":"10.000"},"limitreport-memusage":{"value":3750769,"limit":52428800}},"cachereport":{"origin":"mw-web.codfw.main-f69cdc8f6-r24xm","timestamp":"20241124092717","ttl":864000,"transientcontent":true}}});});</script> </body> </html>