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</ul> </li> <li id="toc-Navigasjonsregneskive" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Navigasjonsregneskive"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Navigasjonsregneskive</span> </div> </a> <ul id="toc-Navigasjonsregneskive-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="Innhold" 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="Vis/skjul innholdsfortegnelsen" > <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">Vis/skjul innholdsfortegnelsen</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-main">Logaritmisk skala</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <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" aria-label="Gå til en artikkel på et annet språk. Tilgjengelig på 31 språk" > <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--action-progressive mw-portlet-lang-heading-31" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">31 språk</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Logaritmisk_skala" title="Logaritmisk skala – svensk" lang="sv" hreflang="sv" data-title="Logaritmisk skala" data-language-autonym="Svenska" data-language-local-name="svensk" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%85%D9%82%D9%8A%D8%A7%D8%B3_%D9%84%D9%88%D8%BA%D8%A7%D8%B1%D9%8A%D8%AA%D9%85%D9%8A" title="مقياس لوغاريتمي – arabisk" lang="ar" hreflang="ar" data-title="مقياس لوغاريتمي" data-language-autonym="العربية" data-language-local-name="arabisk" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9B%D0%BE%D0%B3%D0%B0%D1%80%D0%B8%D1%82%D0%BC%D0%B8%D1%87%D0%BD%D0%B0_%D1%81%D0%BA%D0%B0%D0%BB%D0%B0" title="Логаритмична скала – bulgarsk" lang="bg" hreflang="bg" data-title="Логаритмична скала" data-language-autonym="Български" data-language-local-name="bulgarsk" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Escala_logar%C3%ADtmica" title="Escala logarítmica – katalansk" lang="ca" hreflang="ca" data-title="Escala logarítmica" data-language-autonym="Català" data-language-local-name="katalansk" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Logaritmick%C3%A1_stupnice" title="Logaritmická stupnice – tsjekkisk" lang="cs" hreflang="cs" data-title="Logaritmická stupnice" data-language-autonym="Čeština" data-language-local-name="tsjekkisk" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Logarithmische_Darstellung" title="Logarithmische Darstellung – tysk" lang="de" hreflang="de" data-title="Logarithmische Darstellung" data-language-autonym="Deutsch" data-language-local-name="tysk" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Logaritmiline_skaala" title="Logaritmiline skaala – estisk" lang="et" hreflang="et" data-title="Logaritmiline skaala" data-language-autonym="Eesti" data-language-local-name="estisk" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9B%CE%BF%CE%B3%CE%B1%CF%81%CE%B9%CE%B8%CE%BC%CE%B9%CE%BA%CE%AE_%CE%BA%CE%BB%CE%AF%CE%BC%CE%B1%CE%BA%CE%B1" title="Λογαριθμική κλίμακα – gresk" lang="el" hreflang="el" data-title="Λογαριθμική κλίμακα" data-language-autonym="Ελληνικά" data-language-local-name="gresk" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Logarithmic_scale" title="Logarithmic scale – engelsk" lang="en" hreflang="en" data-title="Logarithmic scale" data-language-autonym="English" data-language-local-name="engelsk" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Escala_logar%C3%ADtmica" title="Escala logarítmica – spansk" lang="es" hreflang="es" data-title="Escala logarítmica" data-language-autonym="Español" data-language-local-name="spansk" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Eskala_logaritmiko" title="Eskala logaritmiko – baskisk" lang="eu" hreflang="eu" data-title="Eskala logaritmiko" data-language-autonym="Euskara" data-language-local-name="baskisk" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%85%D9%82%DB%8C%D8%A7%D8%B3_%D9%84%DA%AF%D8%A7%D8%B1%DB%8C%D8%AA%D9%85%DB%8C" title="مقیاس لگاریتمی – persisk" lang="fa" hreflang="fa" data-title="مقیاس لگاریتمی" data-language-autonym="فارسی" data-language-local-name="persisk" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/%C3%89chelle_logarithmique" title="Échelle logarithmique – fransk" lang="fr" hreflang="fr" data-title="Échelle logarithmique" data-language-autonym="Français" data-language-local-name="fransk" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Sc%C3%A1la_logartamach" title="Scála logartamach – irsk" lang="ga" hreflang="ga" data-title="Scála logartamach" data-language-autonym="Gaeilge" data-language-local-name="irsk" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%A1%9C%EA%B7%B8_%EB%88%88%EA%B8%88" title="로그 눈금 – koreansk" lang="ko" hreflang="ko" data-title="로그 눈금" data-language-autonym="한국어" data-language-local-name="koreansk" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%BC%D5%B8%D5%A3%D5%A1%D6%80%D5%AB%D5%A9%D5%B4%D5%A1%D5%AF%D5%A1%D5%B6_%D5%B4%D5%A1%D5%BD%D5%B7%D5%BF%D5%A1%D5%A2" title="Լոգարիթմական մասշտաբ – armensk" lang="hy" hreflang="hy" data-title="Լոգարիթմական մասշտաբ" data-language-autonym="Հայերեն" data-language-local-name="armensk" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Skala_logaritmik" title="Skala logaritmik – indonesisk" lang="id" hreflang="id" data-title="Skala logaritmik" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesisk" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Scala_logaritmica" title="Scala logaritmica – italiensk" lang="it" hreflang="it" data-title="Scala logaritmica" data-language-autonym="Italiano" data-language-local-name="italiensk" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A1%D7%A7%D7%90%D7%9C%D7%94_%D7%9C%D7%95%D7%92%D7%A8%D7%99%D7%AA%D7%9E%D7%99%D7%AA" title="סקאלה לוגריתמית – hebraisk" lang="he" hreflang="he" data-title="סקאלה לוגריתמית" data-language-autonym="עברית" data-language-local-name="hebraisk" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Logaritmische_schaal" title="Logaritmische schaal – nederlandsk" lang="nl" hreflang="nl" data-title="Logaritmische schaal" data-language-autonym="Nederlands" data-language-local-name="nederlandsk" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E5%AF%BE%E6%95%B0%E3%82%B9%E3%82%B1%E3%83%BC%E3%83%AB" title="対数スケール – japansk" lang="ja" hreflang="ja" data-title="対数スケール" data-language-autonym="日本語" data-language-local-name="japansk" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Skala_logarytmiczna" title="Skala logarytmiczna – polsk" lang="pl" hreflang="pl" data-title="Skala logarytmiczna" data-language-autonym="Polski" data-language-local-name="polsk" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Escala_logar%C3%ADtmica" title="Escala logarítmica – portugisisk" lang="pt" hreflang="pt" data-title="Escala logarítmica" data-language-autonym="Português" data-language-local-name="portugisisk" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Scar%C4%83_logaritmic%C4%83" title="Scară logaritmică – rumensk" lang="ro" hreflang="ro" data-title="Scară logaritmică" data-language-autonym="Română" data-language-local-name="rumensk" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9B%D0%BE%D0%B3%D0%B0%D1%80%D0%B8%D1%84%D0%BC%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9_%D0%BC%D0%B0%D1%81%D1%88%D1%82%D0%B0%D0%B1" title="Логарифмический масштаб – russisk" lang="ru" hreflang="ru" data-title="Логарифмический масштаб" data-language-autonym="Русский" data-language-local-name="russisk" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Logarithmic_scale" title="Logarithmic scale – enkel engelsk" lang="en-simple" hreflang="en-simple" data-title="Logarithmic scale" data-language-autonym="Simple English" data-language-local-name="enkel engelsk" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Logaritminen_asteikko" title="Logaritminen asteikko – finsk" lang="fi" hreflang="fi" data-title="Logaritminen asteikko" data-language-autonym="Suomi" data-language-local-name="finsk" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%A1%E0%B8%B2%E0%B8%95%E0%B8%A3%E0%B8%B2%E0%B8%AA%E0%B9%88%E0%B8%A7%E0%B8%99%E0%B9%80%E0%B8%8A%E0%B8%B4%E0%B8%87%E0%B8%A5%E0%B8%AD%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%B4%E0%B8%97%E0%B8%B6%E0%B8%A1" title="มาตราส่วนเชิงลอการิทึม – thai" lang="th" hreflang="th" data-title="มาตราส่วนเชิงลอการิทึม" data-language-autonym="ไทย" data-language-local-name="thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9B%D0%BE%D0%B3%D0%B0%D1%80%D0%B8%D1%84%D0%BC%D1%96%D1%87%D0%BD%D0%B0_%D1%88%D0%BA%D0%B0%D0%BB%D0%B0" title="Логарифмічна шкала – ukrainsk" lang="uk" hreflang="uk" data-title="Логарифмічна шкала" data-language-autonym="Українська" data-language-local-name="ukrainsk" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Thang_%C4%91o_l%C3%B4garit" title="Thang đo lôgarit – vietnamesisk" lang="vi" hreflang="vi" data-title="Thang đo lôgarit" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamesisk" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%B0%8D%E6%95%B8%E5%B0%BA%E5%BA%A6" title="對數尺度 – kinesisk" lang="zh" hreflang="zh" data-title="對數尺度" data-language-autonym="中文" data-language-local-name="kinesisk" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q937378#sitelinks-wikipedia" title="Rediger lenker til artikkelen på andre språk" class="wbc-editpage">Rediger lenker</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Navnerom"> <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="selected vector-tab-noicon mw-list-item"><a href="/wiki/Logaritmisk_skala" title="Vis innholdssiden [c]" accesskey="c"><span>Artikkel</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Diskusjon:Logaritmisk_skala&action=edit&redlink=1" rel="discussion" class="new" title="Diskusjon om innholdssiden (ikke skrevet ennå) [t]" accesskey="t"><span>Diskusjon</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="Bytt språkvariant" > <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">norsk bokmål</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="Visninger"> <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/Logaritmisk_skala"><span>Les</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Logaritmisk_skala&veaction=edit" title="Rediger siden [v]" accesskey="v"><span>Rediger</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Logaritmisk_skala&action=edit" title="Rediger kildekoden for denne siden [e]" accesskey="e"><span>Rediger kilde</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Logaritmisk_skala&action=history" title="Tidligere sideversjoner av denne siden [h]" accesskey="h"><span>Vis historikk</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Sideverktøy"> <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="Verktøy" > <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">Verktøy</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">Verktøy</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">flytt til sidefeltet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">skjul</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Flere alternativer" > <div class="vector-menu-heading"> Handlinger </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/Logaritmisk_skala"><span>Les</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Logaritmisk_skala&veaction=edit" title="Rediger siden [v]" accesskey="v"><span>Rediger</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Logaritmisk_skala&action=edit" title="Rediger kildekoden for denne siden [e]" accesskey="e"><span>Rediger kilde</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Logaritmisk_skala&action=history"><span>Vis historikk</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div 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id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="nb" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r24553676">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output 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href="/wiki/Fil:Question_book-new.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span"><b>Kildeløs</b>: Denne artikkelen mangler <a href="/wiki/Wikipedia:Bruk_av_kilder" title="Wikipedia:Bruk av kilder">kildehenvisninger</a>, og opplysningene i den kan dermed være vanskelige å <a href="/wiki/Wikipedia:Verifiserbarhet" title="Wikipedia:Verifiserbarhet">verifisere</a>. Kildeløst materiale kan bli <a href="/wiki/Wikipedia:Verifiserbarhet#Bevisbyrden" title="Wikipedia:Verifiserbarhet">fjernet</a>. Helt uten kilder. <span class="date-container"><i>(<span class="date">10. okt. 2015</span>)</i></span></div></td></tr></tbody></table> <p>Med en <b>logaritmisk skala</b> mener vi oppdelingen av en rett linje i tallverdier som følger <a href="/wiki/Logaritme" title="Logaritme">logaritmefunksjonen</a> av det linjære stedsmålet. En skala uten betegnelse er i allmennhet <a href="/wiki/Linearitet" title="Linearitet">lineær</a>. </p><p>En logaritmisk skala er meget praktisk når en vil fremstille relative størrelser i et diagram. </p><p>Noen egenskaper for en logaritmisk skala: </p> <ul><li>en dobling har samme bredde uansett hvor på skalaen vi befinner oss</li> <li>fire ganger er dobbelt så bred som en dobling</li> <li>ti ganger har likeledes samme bredde overalt</li></ul> <p>En logaritmisk skala er helt upåvirket av typen logaritme som er brukt. Den eneste beskrivende størrelsen er skalalengde per faktor, for eksempel 10 cm skala per dekade markering. </p><p>Mange naturprosesser er logaritmiske av natur, slik at en logaritmisk fremstilling passer best. Et godt eksempel er frekvensskalaen i <a href="/wiki/Akustikk" title="Akustikk">akustikken</a>. I en linjær skala fra 20 Hz til 20 kHz ville 10 kHz ligge i midten og båndet 20 Hz til 2 kHz ville oppta kun den første tiendedelen av skalaen. En lineær skala er altså ganske upraktisk her. Vårt øre er logaritmisk av natur: En <i>oktav</i> oppfattes <i>like bred</i> overalt. </p><p>Lydstyrke måles i dB (desibel) som er tiendedeler av 10-tallslogaritme. Det vil si at 3 dB er en dobling av lydenergien, men det er den minste forskjellen i lydstyrke mennesket kan oppfatte. Vår oppfattelse av lydstyrken følger ikke energien, men den logaritmiske desibelskalaen. Den lyden som er så svak at et normalt øre såvidt ikke kan høre den er definert som 0 dB. En kraftig lyd på 100 dB er 10 000 000 000 ganger så kraftig. Signal/støy forholdet i et noenlunde godt stereoanlegg er 60 dB. Det vil si at lydsignalet/musikken har energi som er en million ganger så sterk som bakgrunnsstøyen. </p> <div class="mw-heading mw-heading2"><h2 id="Regnestaven">Regnestaven</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Logaritmisk_skala&veaction=edit&section=1" title="Rediger avsnitt: Regnestaven" class="mw-editsection-visualeditor"><span>rediger</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Logaritmisk_skala&action=edit&section=1" title="Rediger kildekoden til seksjonen Regnestaven"><span>rediger kilde</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Den logaritmiske skalaen dannet grunnlaget for <a href="/wiki/Regnestav" title="Regnestav">regnestaven</a>. Med regnestavens hjelp ble multiplikasjoner foretatt som lengdeaddisjoner på logaritmiske skalaer. Dette var mulig fordi det for logaritmer alltid gjelder at <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \ \log(a\cdot b)=\log a+\log b}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mtext> </mtext> <mi>log</mi> <mo>⁡</mo> <mo stretchy="false">(</mo> <mi>a</mi> <mo>⋅</mo> <mi>b</mi> <mo stretchy="false">)</mo> <mo>=</mo> <mi>log</mi> <mo>⁡</mo> <mi>a</mi> <mo>+</mo> <mi>log</mi> <mo>⁡</mo> <mi>b</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \ \log(a\cdot b)=\log a+\log b}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/a57410adf2f3d6ddbb4a218de3626ad5e4265e04" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:24.539ex; height:2.843ex;" alt="{\displaystyle \ \log(a\cdot b)=\log a+\log b}"></span>. </p><p>Se <a href="/wiki/Regnestav" title="Regnestav">Regnestav</a>. </p><p>Bildet nedenfor viser en regnestav hvor skyveren C er innstilt på å multiplisere med 1.3 (skala D), og lesestreket er satt til 2 for løsningen 1.3 * 2 = 2.6. </p> <figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/Fil:Sliderule_2005.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/27/Sliderule_2005.jpg/600px-Sliderule_2005.jpg" decoding="async" width="600" height="173" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/27/Sliderule_2005.jpg/900px-Sliderule_2005.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/27/Sliderule_2005.jpg/1200px-Sliderule_2005.jpg 2x" data-file-width="1600" data-file-height="462" /></a><figcaption></figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="Navigasjonsregneskive">Navigasjonsregneskive</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Logaritmisk_skala&veaction=edit&section=2" title="Rediger avsnitt: Navigasjonsregneskive" class="mw-editsection-visualeditor"><span>rediger</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Logaritmisk_skala&action=edit&section=2" title="Rediger kildekoden til seksjonen Navigasjonsregneskive"><span>rediger kilde</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fil:StudentE6BFlightComputer.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c4/StudentE6BFlightComputer.jpg/250px-StudentE6BFlightComputer.jpg" decoding="async" width="250" height="253" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c4/StudentE6BFlightComputer.jpg/375px-StudentE6BFlightComputer.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c4/StudentE6BFlightComputer.jpg/500px-StudentE6BFlightComputer.jpg 2x" data-file-width="1265" data-file-height="1278" /></a><figcaption> En regneskive som ofte benyttes av flyelever.</figcaption></figure> <p>Innen flyging brukes ofte en regneskive som fungerer som en rund regnestav med samme logaritmiske skala både på bakgrunnsskiven og den runde roterende skiven. Skalaen fra 1 til 1 (10) går på en runde. Det er et stort antall markeringer for omregninger mellom forskjellige enheter innen volum, vekt og distanse. 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