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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">Aspetto</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="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_it.wikipedia.org&uselang=it" class=""><span>Fai una donazione</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=Speciale:CreaUtenza&returnto=Secondo" title="Si consiglia di registrarsi e di effettuare l'accesso, anche se non è obbligatorio" class=""><span>registrati</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=Speciale:Entra&returnto=Secondo" title="Si consiglia di effettuare l'accesso, anche se non è obbligatorio [o]" accesskey="o" class=""><span>entra</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="Altre opzioni" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" 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id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Speciale:CreaUtenza&returnto=Secondo" title="Si consiglia di registrarsi e di effettuare l'accesso, anche se non è obbligatorio"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>registrati</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Speciale:Entra&returnto=Secondo" title="Si consiglia di effettuare l'accesso, anche se non è obbligatorio [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>entra</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"> Pagine per utenti anonimi <a href="/wiki/Aiuto:Benvenuto" aria-label="Ulteriori informazioni sulla contribuzione"><span>ulteriori informazioni</span></a> </div> <div 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<nav id="mw-panel-toc" aria-label="Indice" 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">Indice</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">sposta nella barra laterale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">nascondi</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">Inizio</div> </a> </li> <li id="toc-Storia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Storia"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Storia</span> </div> </a> <ul id="toc-Storia-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Multipli_e_sottomultipli" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Multipli_e_sottomultipli"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Multipli e sottomultipli</span> </div> </a> <ul id="toc-Multipli_e_sottomultipli-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Note" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Note"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Note</span> </div> </a> <ul id="toc-Note-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Voci_correlate" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Voci_correlate"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Voci correlate</span> </div> </a> <ul id="toc-Voci_correlate-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Altri_progetti" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Altri_progetti"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Altri progetti</span> </div> </a> <ul id="toc-Altri_progetti-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Collegamenti_esterni" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Collegamenti_esterni"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Collegamenti esterni</span> </div> </a> <ul id="toc-Collegamenti_esterni-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="Indice" 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="Mostra/Nascondi l'indice" > <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">Mostra/Nascondi l'indice</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">Secondo</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="Vai a una voce in un'altra lingua. Disponibile in 160 lingue" > <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-160" 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">160 lingue</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Sekonde" title="Sekonde - afrikaans" lang="af" hreflang="af" data-title="Sekonde" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Sekunde" title="Sekunde - tedesco svizzero" lang="gsw" hreflang="gsw" data-title="Sekunde" data-language-autonym="Alemannisch" data-language-local-name="tedesco svizzero" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%88%B4%E1%8A%AE%E1%8A%95%E1%8B%B5" title="ሴኮንድ - amarico" lang="am" hreflang="am" data-title="ሴኮንድ" data-language-autonym="አማርኛ" data-language-local-name="amarico" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Segundo" title="Segundo - aragonese" lang="an" hreflang="an" data-title="Segundo" data-language-autonym="Aragonés" data-language-local-name="aragonese" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AB%D8%A7%D9%86%D9%8A%D8%A9" title="ثانية - arabo" lang="ar" hreflang="ar" data-title="ثانية" data-language-autonym="العربية" data-language-local-name="arabo" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arc mw-list-item"><a href="https://arc.wikipedia.org/wiki/%DC%AA%DC%A6%DC%A6%DC%90" title="ܪܦܦܐ - aramaico" lang="arc" hreflang="arc" data-title="ܪܦܦܐ" data-language-autonym="ܐܪܡܝܐ" data-language-local-name="aramaico" class="interlanguage-link-target"><span>ܐܪܡܝܐ</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D8%AA%D8%A7%D9%86%D9%8A%D8%A9" title="تانية - arabo marocchino" lang="ary" hreflang="ary" data-title="تانية" data-language-autonym="الدارجة" data-language-local-name="arabo marocchino" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%B3%D8%A7%D9%86%D9%8A%D9%87" title="سانيه - arabo egiziano" lang="arz" hreflang="arz" data-title="سانيه" data-language-autonym="مصرى" data-language-local-name="arabo egiziano" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-as mw-list-item"><a href="https://as.wikipedia.org/wiki/%E0%A6%9B%E0%A7%87%E0%A6%95%E0%A7%87%E0%A6%A3%E0%A7%8D%E0%A6%A1" title="ছেকেণ্ড - assamese" lang="as" hreflang="as" data-title="ছেকেণ্ড" data-language-autonym="অসমীয়া" data-language-local-name="assamese" class="interlanguage-link-target"><span>অসমীয়া</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Segundu" title="Segundu - asturiano" lang="ast" hreflang="ast" data-title="Segundu" data-language-autonym="Asturianu" data-language-local-name="asturiano" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Saniy%C9%99" title="Saniyə - azerbaigiano" lang="az" hreflang="az" data-title="Saniyə" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaigiano" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%AB%D8%A7%D9%86%DB%8C%D9%87" title="ثانیه - South Azerbaijani" lang="azb" hreflang="azb" data-title="ثانیه" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4" title="Секунд - baschiro" lang="ba" hreflang="ba" data-title="Секунд" data-language-autonym="Башҡортса" data-language-local-name="baschiro" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-ban mw-list-item"><a href="https://ban.wikipedia.org/wiki/Detik" title="Detik - balinese" lang="ban" hreflang="ban" data-title="Detik" data-language-autonym="Basa Bali" data-language-local-name="balinese" class="interlanguage-link-target"><span>Basa Bali</span></a></li><li class="interlanguage-link interwiki-bar mw-list-item"><a href="https://bar.wikipedia.org/wiki/Sekund" title="Sekund - bavarese" lang="bar" hreflang="bar" data-title="Sekund" data-language-autonym="Boarisch" data-language-local-name="bavarese" class="interlanguage-link-target"><span>Boarisch</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/Sekond%C4%97" title="Sekondė - samogitico" lang="sgs" hreflang="sgs" data-title="Sekondė" data-language-autonym="Žemaitėška" data-language-local-name="samogitico" class="interlanguage-link-target"><span>Žemaitėška</span></a></li><li class="interlanguage-link interwiki-bcl mw-list-item"><a href="https://bcl.wikipedia.org/wiki/Segundo" title="Segundo - Central Bikol" lang="bcl" hreflang="bcl" data-title="Segundo" data-language-autonym="Bikol Central" data-language-local-name="Central Bikol" class="interlanguage-link-target"><span>Bikol Central</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда - bielorusso" lang="be" hreflang="be" data-title="Секунда" data-language-autonym="Беларуская" data-language-local-name="bielorusso" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%A1%D1%8D%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Сэкунда - Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Сэкунда" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bew mw-list-item"><a href="https://bew.wikipedia.org/wiki/Sekon" title="Sekon - betawi" lang="bew" hreflang="bew" data-title="Sekon" data-language-autonym="Betawi" data-language-local-name="betawi" class="interlanguage-link-target"><span>Betawi</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда - bulgaro" lang="bg" hreflang="bg" data-title="Секунда" data-language-autonym="Български" data-language-local-name="bulgaro" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%B8%E0%A7%87%E0%A6%95%E0%A7%87%E0%A6%A8%E0%A7%8D%E0%A6%A1" title="সেকেন্ড - bengalese" lang="bn" hreflang="bn" data-title="সেকেন্ড" data-language-autonym="বাংলা" data-language-local-name="bengalese" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bo mw-list-item"><a href="https://bo.wikipedia.org/wiki/%E0%BD%A6%E0%BE%90%E0%BD%A2%E0%BC%8B%E0%BD%86%E0%BC%8D" title="སྐར་ཆ། - tibetano" lang="bo" hreflang="bo" data-title="སྐར་ཆ།" data-language-autonym="བོད་ཡིག" data-language-local-name="tibetano" class="interlanguage-link-target"><span>བོད་ཡིག</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Eilenn_(amzer)" title="Eilenn (amzer) - bretone" lang="br" hreflang="br" data-title="Eilenn (amzer)" data-language-autonym="Brezhoneg" data-language-local-name="bretone" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Sekunda" title="Sekunda - bosniaco" lang="bs" hreflang="bs" data-title="Sekunda" data-language-autonym="Bosanski" data-language-local-name="bosniaco" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Segon" title="Segon - catalano" lang="ca" hreflang="ca" data-title="Segon" data-language-autonym="Català" data-language-local-name="catalano" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/Mi%C4%93u" title="Miēu - Mindong" lang="cdo" hreflang="cdo" data-title="Miēu" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%DA%86%D8%B1%DA%A9%DB%95" title="چرکە - curdo centrale" lang="ckb" hreflang="ckb" data-title="چرکە" data-language-autonym="کوردی" data-language-local-name="curdo centrale" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-crh mw-list-item"><a href="https://crh.wikipedia.org/wiki/Saniye" title="Saniye - turco crimeo" lang="crh" hreflang="crh" data-title="Saniye" data-language-autonym="Qırımtatarca" data-language-local-name="turco crimeo" class="interlanguage-link-target"><span>Qırımtatarca</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Sekunda" title="Sekunda - ceco" lang="cs" hreflang="cs" data-title="Sekunda" data-language-autonym="Čeština" data-language-local-name="ceco" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cu mw-list-item"><a href="https://cu.wikipedia.org/wiki/%D0%94%D1%94%D1%B5%D1%82%D1%94%D1%80%D0%BE%D0%BB%D1%94%D0%BF%D1%82%D0%BE" title="Дєѵтєролєпто - slavo ecclesiastico" lang="cu" hreflang="cu" data-title="Дєѵтєролєпто" data-language-autonym="Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ" data-language-local-name="slavo ecclesiastico" class="interlanguage-link-target"><span>Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%C3%87%D0%B5%D0%BA%D0%BA%D1%83%D0%BD%D1%82" title="Çеккунт - ciuvascio" lang="cv" hreflang="cv" data-title="Çеккунт" data-language-autonym="Чӑвашла" data-language-local-name="ciuvascio" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Eiliad" title="Eiliad - gallese" lang="cy" hreflang="cy" data-title="Eiliad" data-language-autonym="Cymraeg" data-language-local-name="gallese" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Sekund" title="Sekund - danese" lang="da" hreflang="da" data-title="Sekund" data-language-autonym="Dansk" data-language-local-name="danese" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Sekunde" title="Sekunde - tedesco" lang="de" hreflang="de" data-title="Sekunde" data-language-autonym="Deutsch" data-language-local-name="tedesco" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%94%CE%B5%CF%85%CF%84%CE%B5%CF%81%CF%8C%CE%BB%CE%B5%CF%80%CF%84%CE%BF" title="Δευτερόλεπτο - greco" lang="el" hreflang="el" data-title="Δευτερόλεπτο" data-language-autonym="Ελληνικά" data-language-local-name="greco" 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/Second" title="Second - inglese" lang="en" hreflang="en" data-title="Second" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Sekundo" title="Sekundo - esperanto" lang="eo" hreflang="eo" data-title="Sekundo" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Segundo" title="Segundo - spagnolo" lang="es" hreflang="es" data-title="Segundo" data-language-autonym="Español" data-language-local-name="spagnolo" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Sekund" title="Sekund - estone" lang="et" hreflang="et" data-title="Sekund" data-language-autonym="Eesti" data-language-local-name="estone" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Segundo" title="Segundo - basco" lang="eu" hreflang="eu" data-title="Segundo" data-language-autonym="Euskara" data-language-local-name="basco" 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/%D8%AB%D8%A7%D9%86%DB%8C%D9%87" title="ثانیه - persiano" lang="fa" hreflang="fa" data-title="ثانیه" data-language-autonym="فارسی" data-language-local-name="persiano" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Sekunti" title="Sekunti - finlandese" lang="fi" hreflang="fi" data-title="Sekunti" data-language-autonym="Suomi" data-language-local-name="finlandese" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fj mw-list-item"><a href="https://fj.wikipedia.org/wiki/Sekodi" title="Sekodi - figiano" lang="fj" hreflang="fj" data-title="Sekodi" data-language-autonym="Na Vosa Vakaviti" data-language-local-name="figiano" class="interlanguage-link-target"><span>Na Vosa Vakaviti</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Seconde_(temps)" title="Seconde (temps) - francese" lang="fr" hreflang="fr" data-title="Seconde (temps)" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Sekund" title="Sekund - frisone settentrionale" lang="frr" hreflang="frr" data-title="Sekund" data-language-autonym="Nordfriisk" data-language-local-name="frisone settentrionale" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/Secont" title="Secont - friulano" lang="fur" hreflang="fur" data-title="Secont" data-language-autonym="Furlan" data-language-local-name="friulano" class="interlanguage-link-target"><span>Furlan</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Sekonde" title="Sekonde - frisone occidentale" lang="fy" hreflang="fy" data-title="Sekonde" data-language-autonym="Frysk" data-language-local-name="frisone occidentale" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Soicind" title="Soicind - irlandese" lang="ga" hreflang="ga" data-title="Soicind" data-language-autonym="Gaeilge" data-language-local-name="irlandese" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gan mw-list-item"><a href="https://gan.wikipedia.org/wiki/%E7%A7%92" title="秒 - gan" lang="gan" hreflang="gan" data-title="秒" data-language-autonym="贛語" data-language-local-name="gan" class="interlanguage-link-target"><span>贛語</span></a></li><li class="interlanguage-link interwiki-gcr mw-list-item"><a href="https://gcr.wikipedia.org/wiki/S%C3%A9gonn" title="Ségonn - Guianan Creole" lang="gcr" hreflang="gcr" data-title="Ségonn" data-language-autonym="Kriyòl gwiyannen" data-language-local-name="Guianan Creole" class="interlanguage-link-target"><span>Kriyòl gwiyannen</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Segundo" title="Segundo - galiziano" lang="gl" hreflang="gl" data-title="Segundo" data-language-autonym="Galego" data-language-local-name="galiziano" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gn mw-list-item"><a href="https://gn.wikipedia.org/wiki/Aravo%27ive" title="Aravo'ive - guaraní" lang="gn" hreflang="gn" data-title="Aravo'ive" data-language-autonym="Avañe'ẽ" data-language-local-name="guaraní" class="interlanguage-link-target"><span>Avañe'ẽ</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%B8%E0%AB%87%E0%AA%95%E0%AA%A8%E0%AB%8D%E0%AA%A1" title="સેકન્ડ - gujarati" lang="gu" hreflang="gu" data-title="સેકન્ડ" data-language-autonym="ગુજરાતી" data-language-local-name="gujarati" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-ha mw-list-item"><a href="https://ha.wikipedia.org/wiki/Sakan" title="Sakan - hausa" lang="ha" hreflang="ha" data-title="Sakan" data-language-autonym="Hausa" data-language-local-name="hausa" class="interlanguage-link-target"><span>Hausa</span></a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/Mi%C3%A9u" title="Miéu - hakka" lang="hak" hreflang="hak" data-title="Miéu" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="hakka" class="interlanguage-link-target"><span>客家語 / Hak-kâ-ngî</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A9%D7%A0%D7%99%D7%99%D7%94" title="שנייה - ebraico" lang="he" hreflang="he" data-title="שנייה" data-language-autonym="עברית" data-language-local-name="ebraico" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B8%E0%A5%87%E0%A4%95%E0%A5%87%E0%A4%82%E0%A4%A1" title="सेकेंड - hindi" lang="hi" hreflang="hi" data-title="सेकेंड" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Second" title="Second - hindi figiano" lang="hif" hreflang="hif" data-title="Second" data-language-autonym="Fiji Hindi" data-language-local-name="hindi figiano" class="interlanguage-link-target"><span>Fiji Hindi</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Sekunda" title="Sekunda - croato" lang="hr" hreflang="hr" data-title="Sekunda" data-language-autonym="Hrvatski" data-language-local-name="croato" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Segond_(tan)" title="Segond (tan) - creolo haitiano" lang="ht" hreflang="ht" data-title="Segond (tan)" data-language-autonym="Kreyòl ayisyen" data-language-local-name="creolo haitiano" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/M%C3%A1sodperc" title="Másodperc - ungherese" lang="hu" hreflang="hu" data-title="Másodperc" data-language-autonym="Magyar" data-language-local-name="ungherese" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8E%D5%A1%D5%B5%D6%80%D5%AF%D5%B5%D5%A1%D5%B6" title="Վայրկյան - armeno" lang="hy" hreflang="hy" data-title="Վայրկյան" data-language-autonym="Հայերեն" data-language-local-name="armeno" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hyw mw-list-item"><a href="https://hyw.wikipedia.org/wiki/%D4%B5%D6%80%D5%AF%D5%BE%D5%A1%D5%B5%D6%80%D5%AF%D5%A5%D5%A1%D5%B6" title="Երկվայրկեան - Western Armenian" lang="hyw" hreflang="hyw" data-title="Երկվայրկեան" data-language-autonym="Արեւմտահայերէն" data-language-local-name="Western Armenian" class="interlanguage-link-target"><span>Արեւմտահայերէն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Secunda" title="Secunda - interlingua" lang="ia" hreflang="ia" data-title="Secunda" data-language-autonym="Interlingua" data-language-local-name="interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Detik" title="Detik - indonesiano" lang="id" hreflang="id" data-title="Detik" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiano" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ie mw-list-item"><a href="https://ie.wikipedia.org/wiki/Seconde" title="Seconde - interlingue" lang="ie" hreflang="ie" data-title="Seconde" data-language-autonym="Interlingue" data-language-local-name="interlingue" class="interlanguage-link-target"><span>Interlingue</span></a></li><li class="interlanguage-link interwiki-ilo mw-list-item"><a href="https://ilo.wikipedia.org/wiki/Segundo" title="Segundo - ilocano" lang="ilo" hreflang="ilo" data-title="Segundo" data-language-autonym="Ilokano" data-language-local-name="ilocano" class="interlanguage-link-target"><span>Ilokano</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Sekundo" title="Sekundo - ido" lang="io" hreflang="io" data-title="Sekundo" data-language-autonym="Ido" data-language-local-name="ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Sek%C3%BAnda" title="Sekúnda - islandese" lang="is" hreflang="is" data-title="Sekúnda" data-language-autonym="Íslenska" data-language-local-name="islandese" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-ja badge-Q17437798 badge-goodarticle mw-list-item" title="voce di qualità"><a href="https://ja.wikipedia.org/wiki/%E7%A7%92" title="秒 - giapponese" lang="ja" hreflang="ja" data-title="秒" data-language-autonym="日本語" data-language-local-name="giapponese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jam mw-list-item"><a href="https://jam.wikipedia.org/wiki/Sekan" title="Sekan - creolo giamaicano" lang="jam" hreflang="jam" data-title="Sekan" data-language-autonym="Patois" data-language-local-name="creolo giamaicano" class="interlanguage-link-target"><span>Patois</span></a></li><li class="interlanguage-link interwiki-jbo mw-list-item"><a href="https://jbo.wikipedia.org/wiki/snidu" title="snidu - lojban" lang="jbo" hreflang="jbo" data-title="snidu" data-language-autonym="La .lojban." data-language-local-name="lojban" class="interlanguage-link-target"><span>La .lojban.</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Detik" title="Detik - giavanese" lang="jv" hreflang="jv" data-title="Detik" data-language-autonym="Jawa" data-language-local-name="giavanese" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%AC%E1%83%90%E1%83%9B%E1%83%98" title="წამი - georgiano" lang="ka" hreflang="ka" data-title="წამი" data-language-autonym="ქართული" data-language-local-name="georgiano" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Tasint" title="Tasint - cabilo" lang="kab" hreflang="kab" data-title="Tasint" data-language-autonym="Taqbaylit" data-language-local-name="cabilo" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-kbp mw-list-item"><a href="https://kbp.wikipedia.org/wiki/K%C9%9Bl%C9%9Bmk%C9%9Bl%C9%9Bm" title="Kɛlɛmkɛlɛm - Kabiye" lang="kbp" hreflang="kbp" data-title="Kɛlɛmkɛlɛm" data-language-autonym="Kabɩyɛ" data-language-local-name="Kabiye" class="interlanguage-link-target"><span>Kabɩyɛ</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4" title="Секунд - kazako" lang="kk" hreflang="kk" data-title="Секунд" data-language-autonym="Қазақша" data-language-local-name="kazako" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%B4%88_(%EC%8B%9C%EA%B0%84)" title="초 (시간) - coreano" lang="ko" hreflang="ko" data-title="초 (시간)" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-krc mw-list-item"><a href="https://krc.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4" title="Секунд - karachay-Balkar" lang="krc" hreflang="krc" data-title="Секунд" data-language-autonym="Къарачай-малкъар" data-language-local-name="karachay-Balkar" class="interlanguage-link-target"><span>Къарачай-малкъар</span></a></li><li class="interlanguage-link interwiki-ks mw-list-item"><a href="https://ks.wikipedia.org/wiki/%D8%B3%D8%A0%DA%A9%D9%8E%D9%86%D9%9B%DA%88" title="سؠکَنٛڈ - kashmiri" lang="ks" hreflang="ks" data-title="سؠکَنٛڈ" data-language-autonym="कॉशुर / کٲشُر" data-language-local-name="kashmiri" class="interlanguage-link-target"><span>कॉशुर / کٲشُر</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/San%C3%AE" title="Sanî - curdo" lang="ku" hreflang="ku" data-title="Sanî" data-language-autonym="Kurdî" data-language-local-name="curdo" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-kw mw-list-item"><a href="https://kw.wikipedia.org/wiki/Eylen" title="Eylen - cornico" lang="kw" hreflang="kw" data-title="Eylen" data-language-autonym="Kernowek" data-language-local-name="cornico" class="interlanguage-link-target"><span>Kernowek</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда - kirghiso" lang="ky" hreflang="ky" data-title="Секунда" data-language-autonym="Кыргызча" data-language-local-name="kirghiso" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Secundum" title="Secundum - latino" lang="la" hreflang="la" data-title="Secundum" data-language-autonym="Latina" data-language-local-name="latino" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Sekonn" title="Sekonn - lussemburghese" lang="lb" hreflang="lb" data-title="Sekonn" data-language-autonym="Lëtzebuergesch" data-language-local-name="lussemburghese" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Sec%C3%B3nd" title="Secónd - limburghese" lang="li" hreflang="li" data-title="Secónd" data-language-autonym="Limburgs" data-language-local-name="limburghese" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Segond" title="Segond - lombardo" lang="lmo" hreflang="lmo" data-title="Segond" data-language-autonym="Lombard" data-language-local-name="lombardo" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Sekund%C4%97" title="Sekundė - lituano" lang="lt" hreflang="lt" data-title="Sekundė" data-language-autonym="Lietuvių" data-language-local-name="lituano" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Sekunde" title="Sekunde - lettone" lang="lv" hreflang="lv" data-title="Sekunde" data-language-autonym="Latviešu" data-language-local-name="lettone" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mai mw-list-item"><a href="https://mai.wikipedia.org/wiki/%E0%A4%B8%E0%A5%87%E0%A4%95%E0%A5%87%E0%A4%A3%E0%A5%8D%E0%A4%A1" title="सेकेण्ड - maithili" lang="mai" hreflang="mai" data-title="सेकेण्ड" data-language-autonym="मैथिली" data-language-local-name="maithili" class="interlanguage-link-target"><span>मैथिली</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Segondra" title="Segondra - malgascio" lang="mg" hreflang="mg" data-title="Segondra" data-language-autonym="Malagasy" data-language-local-name="malgascio" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-min mw-list-item"><a href="https://min.wikipedia.org/wiki/Datiak" title="Datiak - menangkabau" lang="min" hreflang="min" data-title="Datiak" data-language-autonym="Minangkabau" data-language-local-name="menangkabau" class="interlanguage-link-target"><span>Minangkabau</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда - macedone" lang="mk" hreflang="mk" data-title="Секунда" data-language-autonym="Македонски" data-language-local-name="macedone" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%9E%E0%B5%8A%E0%B4%9F%E0%B4%BF" title="ഞൊടി - malayalam" lang="ml" hreflang="ml" data-title="ഞൊടി" data-language-autonym="മലയാളം" data-language-local-name="malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4" title="Секунд - mongolo" lang="mn" hreflang="mn" data-title="Секунд" data-language-autonym="Монгол" data-language-local-name="mongolo" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%B8%E0%A5%87%E0%A4%95%E0%A4%82%E0%A4%A6" title="सेकंद - marathi" lang="mr" hreflang="mr" data-title="सेकंद" data-language-autonym="मराठी" data-language-local-name="marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Saat" title="Saat - malese" lang="ms" hreflang="ms" data-title="Saat" data-language-autonym="Bahasa Melayu" data-language-local-name="malese" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%85%E1%80%80%E1%80%B9%E1%80%80%E1%80%94%E1%80%B7%E1%80%BA" title="စက္ကန့် - birmano" lang="my" hreflang="my" data-title="စက္ကန့်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="birmano" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Sekunn" title="Sekunn - basso tedesco" lang="nds" hreflang="nds" data-title="Sekunn" data-language-autonym="Plattdüütsch" data-language-local-name="basso tedesco" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%B8%E0%A5%87%E0%A4%95%E0%A5%87%E0%A4%A8%E0%A5%8D%E0%A4%A1" title="सेकेन्ड - nepalese" lang="ne" hreflang="ne" data-title="सेकेन्ड" data-language-autonym="नेपाली" data-language-local-name="nepalese" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Seconde" title="Seconde - olandese" lang="nl" hreflang="nl" data-title="Seconde" data-language-autonym="Nederlands" data-language-local-name="olandese" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Sekund" title="Sekund - norvegese nynorsk" lang="nn" hreflang="nn" data-title="Sekund" data-language-autonym="Norsk nynorsk" data-language-local-name="norvegese nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Sekund" title="Sekund - norvegese bokmål" lang="nb" hreflang="nb" data-title="Sekund" data-language-autonym="Norsk bokmål" data-language-local-name="norvegese bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nso mw-list-item"><a href="https://nso.wikipedia.org/wiki/Motsotswana" title="Motsotswana - sotho del nord" lang="nso" hreflang="nso" data-title="Motsotswana" data-language-autonym="Sesotho sa Leboa" data-language-local-name="sotho del nord" class="interlanguage-link-target"><span>Sesotho sa Leboa</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Segonda" title="Segonda - occitano" lang="oc" hreflang="oc" data-title="Segonda" data-language-autonym="Occitan" data-language-local-name="occitano" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Sekondii" title="Sekondii - oromo" lang="om" hreflang="om" data-title="Sekondii" data-language-autonym="Oromoo" data-language-local-name="oromo" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%B8%E0%A8%95%E0%A8%BF%E0%A9%B0%E0%A8%9F" title="ਸਕਿੰਟ - punjabi" lang="pa" hreflang="pa" data-title="ਸਕਿੰਟ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Sekunda" title="Sekunda - polacco" lang="pl" hreflang="pl" data-title="Sekunda" data-language-autonym="Polski" data-language-local-name="polacco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Second" title="Second - piemontese" lang="pms" hreflang="pms" data-title="Second" data-language-autonym="Piemontèis" data-language-local-name="piemontese" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%B3%DA%A9%D9%86%D9%B9" title="سکنٹ - Western Punjabi" lang="pnb" hreflang="pnb" data-title="سکنٹ" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D8%AB%D8%A7%D9%86%D9%8A%D9%87" title="ثانيه - pashto" lang="ps" hreflang="ps" data-title="ثانيه" data-language-autonym="پښتو" data-language-local-name="pashto" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Segundo" title="Segundo - portoghese" lang="pt" hreflang="pt" data-title="Segundo" data-language-autonym="Português" data-language-local-name="portoghese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Sikunthu" title="Sikunthu - quechua" lang="qu" hreflang="qu" data-title="Sikunthu" data-language-autonym="Runa Simi" data-language-local-name="quechua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Secund%C4%83" title="Secundă - rumeno" lang="ro" hreflang="ro" data-title="Secundă" data-language-autonym="Română" data-language-local-name="rumeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-roa-tara mw-list-item"><a href="https://roa-tara.wikipedia.org/wiki/Seconne" title="Seconne - Tarantino" lang="nap-x-tara" hreflang="nap-x-tara" data-title="Seconne" data-language-autonym="Tarandíne" data-language-local-name="Tarantino" class="interlanguage-link-target"><span>Tarandíne</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда - russo" lang="ru" hreflang="ru" data-title="Секунда" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-rue mw-list-item"><a href="https://rue.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда - ruteno" lang="rue" hreflang="rue" data-title="Секунда" data-language-autonym="Русиньскый" data-language-local-name="ruteno" class="interlanguage-link-target"><span>Русиньскый</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%A1%D3%A9%D0%BA%D2%AF%D2%AF%D0%BD%D0%B4%D1%8D" title="Сөкүүндэ - sacha" lang="sah" hreflang="sah" data-title="Сөкүүндэ" data-language-autonym="Саха тыла" data-language-local-name="sacha" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-sat mw-list-item"><a href="https://sat.wikipedia.org/wiki/%E1%B1%B4%E1%B1%A4%E1%B1%AF%E1%B1%A4%E1%B1%A1" title="ᱴᱤᱯᱤᱡ - santali" lang="sat" hreflang="sat" data-title="ᱴᱤᱯᱤᱡ" data-language-autonym="ᱥᱟᱱᱛᱟᱲᱤ" data-language-local-name="santali" class="interlanguage-link-target"><span>ᱥᱟᱱᱛᱟᱲᱤ</span></a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Segundu" title="Segundu - sardo" lang="sc" hreflang="sc" data-title="Segundu" data-language-autonym="Sardu" data-language-local-name="sardo" class="interlanguage-link-target"><span>Sardu</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Seicont" title="Seicont - scozzese" lang="sco" hreflang="sco" data-title="Seicont" data-language-autonym="Scots" data-language-local-name="scozzese" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D8%B3%D9%8A%DA%AA%D9%86%DA%8A" title="سيڪنڊ - sindhi" lang="sd" hreflang="sd" data-title="سيڪنڊ" data-language-autonym="سنڌي" data-language-local-name="sindhi" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Sekund" title="Sekund - serbo-croato" lang="sh" hreflang="sh" data-title="Sekund" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbo-croato" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B6%AD%E0%B6%AD%E0%B7%8A%E0%B6%B4%E0%B6%BB%E0%B6%BA" title="තත්පරය - singalese" lang="si" hreflang="si" data-title="තත්පරය" data-language-autonym="සිංහල" data-language-local-name="singalese" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Second" title="Second - Simple English" lang="en-simple" hreflang="en-simple" data-title="Second" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Sekunda" title="Sekunda - slovacco" lang="sk" hreflang="sk" data-title="Sekunda" data-language-autonym="Slovenčina" data-language-local-name="slovacco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Sekunda" title="Sekunda - sloveno" lang="sl" hreflang="sl" data-title="Sekunda" data-language-autonym="Slovenščina" data-language-local-name="sloveno" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sn mw-list-item"><a href="https://sn.wikipedia.org/wiki/Chepiri" title="Chepiri - shona" lang="sn" hreflang="sn" data-title="Chepiri" data-language-autonym="ChiShona" data-language-local-name="shona" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/Ilbiriqsi" title="Ilbiriqsi - somalo" lang="so" hreflang="so" data-title="Ilbiriqsi" data-language-autonym="Soomaaliga" data-language-local-name="somalo" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Sekonda" title="Sekonda - albanese" lang="sq" hreflang="sq" data-title="Sekonda" data-language-autonym="Shqip" data-language-local-name="albanese" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4" title="Секунд - serbo" lang="sr" hreflang="sr" data-title="Секунд" data-language-autonym="Српски / srpski" data-language-local-name="serbo" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Detik" title="Detik - sundanese" lang="su" hreflang="su" data-title="Detik" data-language-autonym="Sunda" data-language-local-name="sundanese" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Sekund" title="Sekund - svedese" lang="sv" hreflang="sv" data-title="Sekund" data-language-autonym="Svenska" data-language-local-name="svedese" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Sekunde" title="Sekunde - swahili" lang="sw" hreflang="sw" data-title="Sekunde" data-language-autonym="Kiswahili" data-language-local-name="swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-szl mw-list-item"><a href="https://szl.wikipedia.org/wiki/Sek%C5%8Dnda" title="Sekōnda - slesiano" lang="szl" hreflang="szl" data-title="Sekōnda" data-language-autonym="Ślůnski" data-language-local-name="slesiano" class="interlanguage-link-target"><span>Ślůnski</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%A8%E0%AF%8A%E0%AE%9F%E0%AE%BF_(%E0%AE%95%E0%AE%BE%E0%AE%B2_%E0%AE%85%E0%AE%B3%E0%AE%B5%E0%AF%81)" title="நொடி (கால அளவு) - tamil" lang="ta" hreflang="ta" data-title="நொடி (கால அளவு)" data-language-autonym="தமிழ்" data-language-local-name="tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%B8%E0%B1%86%E0%B0%95%E0%B0%82%E0%B0%A1%E0%B1%81" title="సెకండు - telugu" lang="te" hreflang="te" data-title="సెకండు" data-language-autonym="తెలుగు" data-language-local-name="telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%A1%D0%BE%D0%BD%D0%B8%D1%8F" title="Сония - tagico" lang="tg" hreflang="tg" data-title="Сония" data-language-autonym="Тоҷикӣ" data-language-local-name="tagico" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%A7%E0%B8%B4%E0%B8%99%E0%B8%B2%E0%B8%97%E0%B8%B5" title="วินาที - thailandese" lang="th" hreflang="th" data-title="วินาที" data-language-autonym="ไทย" data-language-local-name="thailandese" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Segundo" title="Segundo - tagalog" lang="tl" hreflang="tl" data-title="Segundo" data-language-autonym="Tagalog" data-language-local-name="tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Saniye" title="Saniye - turco" lang="tr" hreflang="tr" data-title="Saniye" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4" title="Секунд - tataro" lang="tt" hreflang="tt" data-title="Секунд" data-language-autonym="Татарча / tatarça" data-language-local-name="tataro" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда - ucraino" lang="uk" hreflang="uk" data-title="Секунда" data-language-autonym="Українська" data-language-local-name="ucraino" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D8%AB%D8%A7%D9%86%DB%8C%DB%81" title="ثانیہ - urdu" lang="ur" hreflang="ur" data-title="ثانیہ" data-language-autonym="اردو" data-language-local-name="urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Soniya" title="Soniya - uzbeco" lang="uz" hreflang="uz" data-title="Soniya" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbeco" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/Sekund" title="Sekund - vepso" lang="vep" hreflang="vep" data-title="Sekund" data-language-autonym="Vepsän kel’" data-language-local-name="vepso" class="interlanguage-link-target"><span>Vepsän kel’</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Gi%C3%A2y" title="Giây - vietnamita" lang="vi" hreflang="vi" data-title="Giây" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-vls mw-list-item"><a href="https://vls.wikipedia.org/wiki/Seconde" title="Seconde - fiammingo occidentale" lang="vls" hreflang="vls" data-title="Seconde" data-language-autonym="West-Vlams" data-language-local-name="fiammingo occidentale" class="interlanguage-link-target"><span>West-Vlams</span></a></li><li class="interlanguage-link interwiki-wa mw-list-item"><a href="https://wa.wikipedia.org/wiki/Sigonde" title="Sigonde - vallone" lang="wa" hreflang="wa" data-title="Sigonde" data-language-autonym="Walon" data-language-local-name="vallone" class="interlanguage-link-target"><span>Walon</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Segundo" title="Segundo - waray" lang="war" hreflang="war" data-title="Segundo" data-language-autonym="Winaray" data-language-local-name="waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wo mw-list-item"><a href="https://wo.wikipedia.org/wiki/Saa" title="Saa - wolof" lang="wo" hreflang="wo" data-title="Saa" data-language-autonym="Wolof" data-language-local-name="wolof" class="interlanguage-link-target"><span>Wolof</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E7%A7%92" title="秒 - wu" lang="wuu" hreflang="wuu" data-title="秒" data-language-autonym="吴语" data-language-local-name="wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-xmf mw-list-item"><a href="https://xmf.wikipedia.org/wiki/%E1%83%9B%E1%83%94%E1%83%A0%E1%83%A5%E1%83%90" title="მერქა - mengrelio" lang="xmf" hreflang="xmf" data-title="მერქა" data-language-autonym="მარგალური" data-language-local-name="mengrelio" class="interlanguage-link-target"><span>მარგალური</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%A1%D7%A2%D7%A7%D7%95%D7%A0%D7%93%D7%A2" title="סעקונדע - yiddish" lang="yi" hreflang="yi" data-title="סעקונדע" data-language-autonym="ייִדיש" data-language-local-name="yiddish" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-za mw-list-item"><a href="https://za.wikipedia.org/wiki/Miux" title="Miux - zhuang" lang="za" hreflang="za" data-title="Miux" data-language-autonym="Vahcuengh" data-language-local-name="zhuang" class="interlanguage-link-target"><span>Vahcuengh</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%A7%92" title="秒 - cinese" lang="zh" hreflang="zh" data-title="秒" data-language-autonym="中文" data-language-local-name="cinese" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E7%A7%92" title="秒 - cinese classico" lang="lzh" hreflang="lzh" data-title="秒" data-language-autonym="文言" data-language-local-name="cinese classico" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Bi%C3%B3" title="Bió - min nan" lang="nan" hreflang="nan" data-title="Bió" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="min nan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E7%A7%92%E9%90%98" title="秒鐘 - cantonese" lang="yue" hreflang="yue" data-title="秒鐘" data-language-autonym="粵語" data-language-local-name="cantonese" class="interlanguage-link-target"><span>粵語</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/Q11574#sitelinks-wikipedia" title="Modifica collegamenti interlinguistici" class="wbc-editpage">Modifica collegamenti</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="Namespace"> <div 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.hatnote-text{padding-left:.5em}body.skin-minerva .mw-parser-output .hatnote-icon{padding-right:8px}body.skin-minerva .mw-parser-output .hatnote-icon img{height:auto;width:16px}body.skin--responsive .mw-parser-output .hatnote a.new{color:#d73333}body.skin--responsive .mw-parser-output .hatnote a.new:visited{color:#a55858}</style> <div class="hatnote noprint nota-disambigua"> <div class="hatnote-content"><span class="noviewer hatnote-icon" typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/18px-Nota_disambigua.svg.png" decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/27px-Nota_disambigua.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/36px-Nota_disambigua.svg.png 2x" data-file-width="200" data-file-height="200" /></span></span> <span class="hatnote-text"><a href="/wiki/Aiuto:Disambiguazione" title="Aiuto:Disambiguazione">Disambiguazione</a> – Se stai cercando altri significati, vedi <b><a href="/wiki/Secondo_(disambigua)" class="mw-disambig" title="Secondo (disambigua)">Secondo (disambigua)</a></b>.</span></div> </div> <table class="infobox sinottico" summary="Tabella sinottica che riassume i principali dati del soggetto"><tbody><tr class="sinottico_testata"><th colspan="2" style="background:#A2A2A2;color:#fff">Secondo</th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><figure class="mw-halign-center" typeof="mw:File/Frameless"><a href="/wiki/File:Clock-pendulum.gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/Clock-pendulum.gif/158px-Clock-pendulum.gif" decoding="async" width="158" height="300" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/Clock-pendulum.gif/237px-Clock-pendulum.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/15/Clock-pendulum.gif/316px-Clock-pendulum.gif 2x" data-file-width="353" data-file-height="669" /></a><figcaption></figcaption></figure>Schema del meccanismo base di un <a href="/wiki/Orologio_a_pendolo" title="Orologio a pendolo">orologio a pendolo</a>. Ogni <a href="/wiki/Oscillazione" title="Oscillazione">oscillazione</a> corrisponde al tempo di 1 secondo.</td></tr><tr class="sinottico_divisione"><th colspan="2" style="background:#D2D2D2">Informazioni generali</th></tr><tr><th><a href="/wiki/Sistemi_di_misurazione" title="Sistemi di misurazione">Sistema</a></th><td><a href="/wiki/Sistema_internazionale_di_unit%C3%A0_di_misura" title="Sistema internazionale di unità di misura">SI</a> </td></tr><tr><th><a href="/wiki/Grandezza_fisica" title="Grandezza fisica">Grandezza</a></th><td><a href="/wiki/Tempo" title="Tempo">tempo</a> </td></tr><tr><th>Simbolo</th><td>s </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background:#D2D2D2"><a href="/wiki/Conversione_delle_unit%C3%A0_di_misura" title="Conversione delle unità di misura">Conversioni</a> <table width="100%" style="font-weight:normal;font-style:italic; text-align:left"> <tbody><tr> <td width="50%">1 s in...</td> <td>...equivale a... </td></tr></tbody></table></th></tr><tr><th><a href="/wiki/Unit%C3%A0_di_misura_di_Planck" title="Unità di misura di Planck">Unità di Planck</a></th><td>≈<span class="nowrap"><span data-sort-value="7043185500000000000♠"></span>1,855<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>43</sup></span> <a href="/wiki/Tempo_di_Planck" title="Tempo di Planck">t<sub>P</sub></a> </td></tr><tr><th><a href="/wiki/Unit%C3%A0_atomiche" title="Unità atomiche">Unità atomiche</a></th><td>≈<span class="nowrap"><span data-sort-value="7016465360000000000♠"></span>4,6536<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>16</sup></span> ħ/E<sub>h</sub> </td></tr><tr><th><a href="/wiki/Sistema_astronomico_di_unit%C3%A0_di_misura" title="Sistema astronomico di unità di misura">Unità SA</a></th><td>≈<span class="nowrap"><span data-sort-value="6995115741000000000♠"></span>1,15741<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−5</sup></span> <a href="/wiki/Giorno_solare" class="mw-redirect" title="Giorno solare">d</a> </td></tr><tr><td class="sinottico_piede2 noprint nomobile metadata" colspan="2"><a href="https://www.wikidata.org/wiki/Q11574" class="extiw" title="d:Q11574"><span title="Modifica i dati della voce Secondo su Wikidata">Modifica dati su Wikidata</span></a><b> ·</b> <a href="/wiki/Template:Unit%C3%A0/man" title="Template:Unità/man"><span title="Manuale del template Unità">Manuale</span></a></td></tr></tbody></table> <p>Il <b>minuto secondo</b> (più comunemente, per <a href="/wiki/Ellissi_grammaticale" title="Ellissi grammaticale">ellissi</a>, <b>secondo</b>) è un'<a href="/wiki/Unit%C3%A0_di_misura" title="Unità di misura">unità di misura</a> del <a href="/wiki/Tempo" title="Tempo">tempo</a> e una delle sette unità base del <a href="/wiki/Sistema_internazionale_di_unit%C3%A0_di_misura" title="Sistema internazionale di unità di misura">Sistema Internazionale</a>. </p><p>Il simbolo esatto è <b>s</b>, senza punto; a volte i secondi vengono erroneamente indicati con <i>sec.</i> o <i>sec</i> (che invece corrispondono rispettivamente all'<a href="/wiki/Abbreviazione" title="Abbreviazione">abbreviazione</a> di <a href="/wiki/Secolo" title="Secolo">secolo</a> e al simbolo di <a href="/wiki/Secante_(trigonometria)" title="Secante (trigonometria)">secante</a>), o con il simbolo <b><a href="/wiki/Primo_(simbolo)" title="Primo (simbolo)">″</a></b>. </p><p>Stando alla dicitura ufficiale del <a href="/wiki/Bureau_international_des_poids_et_mesures" title="Bureau international des poids et mesures">BIPM</a>, il secondo è definito come la durata di 9 192 631 770 periodi della radiazione corrispondente alla transizione tra due <a href="/wiki/Struttura_iperfine" title="Struttura iperfine">livelli iperfini</a>, da (F=4, MF=0) a (F=3, MF=0), dello stato fondamentale dell'atomo di <a href="/wiki/Cesio_(elemento_chimico)" class="mw-redirect" title="Cesio (elemento chimico)">cesio</a>-133<sup id="cite_ref-BIPM21_1-0" class="reference"><a href="#cite_note-BIPM21-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Storia">Storia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Secondo&veaction=edit&section=1" title="Modifica la sezione Storia" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Secondo&action=edit&section=1" title="Edit section's source code: Storia"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Storicamente il secondo venne definito, in termini di rotazione terrestre, come 1/86 400 del <a href="/wiki/Giorno" title="Giorno">giorno solare</a> medio, oggi è lievemente meno di 1/86 400 del giorno medio a causa del lentissimo e impercettibile, ma progressivo allungamento delle giornate causato dall'interazione gravitazionale Terra-Luna e la <a href="/wiki/Forza_di_marea" title="Forza di marea">forza di marea</a> che quest'ultima esercita sul nostro pianeta; unitamente a altri fattori principalmente riguardanti la fusione di ghiacciai alle alte latitudini. Nel <a href="/wiki/1956" title="1956">1956</a> il <a href="/wiki/Comit%C3%A9_international_des_poids_et_mesures" title="Comité international des poids et mesures">Comitato internazionale dei pesi e delle misure</a>, con l'autorità datagli dalla decima <a href="/wiki/Conf%C3%A9rence_g%C3%A9n%C3%A9rale_des_poids_et_mesures" title="Conférence générale des poids et mesures">Conferenza generale sui pesi e sulle misure</a> del <a href="/wiki/1954" title="1954">1954</a>, definì il secondo in termini di rivoluzione terrestre attorno al <a href="/wiki/Sole" title="Sole">Sole</a> in una particolare epoca, poiché si riconobbe che la rotazione terrestre non era sufficientemente uniforme da essere uno standard per il tempo. Il movimento della <a href="/wiki/Terra" title="Terra">Terra</a> venne descritto nelle <a href="/w/index.php?title=Tabelle_del_sole_di_Newcomb&action=edit&redlink=1" class="new" title="Tabelle del sole di Newcomb (la pagina non esiste)">Tabelle del sole di Newcomb</a>, che fornivano una formula per il movimento del sole all'epoca 1900, basata sulle osservazioni astronomiche fatte durante il <a href="/wiki/XVIII_secolo" title="XVIII secolo">XVIII</a> e <a href="/wiki/XIX_secolo" title="XIX secolo">XIX secolo</a>. Il <i>secondo</i> <i><a href="/wiki/Effemeridi" title="Effemeridi">effemeride</a></i> così definito era: </p> <dl><dd>«la frazione di 1/31 556 925,9747 dell'<a href="/wiki/Anno_tropico" title="Anno tropico">anno tropico</a> per lo <a href="/wiki/0_gennaio" title="0 gennaio">0 gennaio</a> <a href="/wiki/1900" title="1900">1900</a> alle ore 12 <a href="/wiki/Tempo_effemeride" title="Tempo effemeride">tempo effemeride</a>».</dd></dl> <p>Questa definizione venne ratificata dall'undicesima Conferenza generale sui pesi e sulle misure del <a href="/wiki/1960" title="1960">1960</a>. Il riferimento all'anno 1900 non significa che questa sia l'epoca del giorno solare medio di 86 400 secondi. Piuttosto, è l'epoca dell'anno tropico di 31 556 925,9747 secondi in tempo effemeride. Il <a href="/wiki/Tempo_effemeride" title="Tempo effemeride">tempo effemeride</a> (ET) venne definito come la misura del tempo che porta la posizione osservata dei corpi celesti, in accordo con la teoria dinamica del movimento <a href="/wiki/Isaac_Newton" title="Isaac Newton">newtoniano</a>. </p><p>A seguito di numerosi anni di lavoro, due astronomi - <a href="/wiki/William_Markowitz" title="William Markowitz">William Markowitz</a> dello <a href="/wiki/United_States_Naval_Observatory" title="United States Naval Observatory">United States Naval Observatory</a> (USNO) e <a href="/wiki/Louis_Essen" title="Louis Essen">Louis Essen</a> del <a href="/wiki/National_Physical_Laboratory" title="National Physical Laboratory">National Physical Laboratory</a> di <a href="/wiki/Teddington" title="Teddington">Teddington</a> (<a href="/wiki/Inghilterra" title="Inghilterra">Inghilterra</a>) - determinarono la relazione tra la frequenza dell'atomo di <a href="/wiki/Cesio_(elemento_chimico)" class="mw-redirect" title="Cesio (elemento chimico)">cesio</a> e il secondo effemeride. Essi determinarono il movimento orbitale della <a href="/wiki/Luna" title="Luna">Luna</a> rispetto alla Terra, dal quale il movimento apparente del Sole può essere riferito, in termini di tempo misurato da un <a href="/wiki/Orologio_atomico" title="Orologio atomico">orologio atomico</a>. Come risultato, nel <a href="/wiki/1967" title="1967">1967</a> la tredicesima conferenza generale sui pesi e sulle misure adottò il secondo del <a href="/wiki/Tempo_atomico_internazionale" title="Tempo atomico internazionale">Tempo atomico internazionale</a> nel <a href="/wiki/Sistema_internazionale_di_unit%C3%A0_di_misura" title="Sistema internazionale di unità di misura">Sistema Internazionale</a> come: </p> <dl><dd>«la durata di 9 192 631 770 periodi della radiazione corrispondente alla transizione tra due livelli iperfini, da (F=4, MF=0) a (F=3, MF=0), dello stato fondamentale dell'atomo di <a href="/wiki/Cesio_(elemento_chimico)" class="mw-redirect" title="Cesio (elemento chimico)">cesio</a>-133»<sup id="cite_ref-BIPM21_1-1" class="reference"><a href="#cite_note-BIPM21-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></dd></dl> <p>Questa definizione, e il valore della <a href="/wiki/Costante_fisica" title="Costante fisica">costante fisica</a>, sono stati confermati nel 2018 dalla 26ª CGPM.<sup id="cite_ref-26_CGPM_RES1_2-0" class="reference"><a href="#cite_note-26_CGPM_RES1-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Lo stato fondamentale è definito a campo magnetico nullo. Il secondo così definito è equivalente al secondo effemeride. </p><p>Il secondo è l'unità di misura definita con maggiore accuratezza, che è attualmente nell'ordine di 10<sup>-12</sup><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. </p><p>In Italia il secondo è misurato in base al campione dell'<a href="/wiki/Istituto_elettrotecnico_nazionale_Galileo_Ferraris" title="Istituto elettrotecnico nazionale Galileo Ferraris">Istituto elettrotecnico nazionale Galileo Ferraris</a>, a Torino. </p> <div class="mw-heading mw-heading2"><h2 id="Multipli_e_sottomultipli">Multipli e sottomultipli</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Secondo&veaction=edit&section=2" title="Modifica la sezione Multipli e sottomultipli" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Secondo&action=edit&section=2" title="Edit section's source code: Multipli e sottomultipli"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Nei <a href="/wiki/Prefissi_del_Sistema_internazionale_di_unit%C3%A0_di_misura" title="Prefissi del Sistema internazionale di unità di misura">prefissi SI</a> vengono usati i multipli e i sottomultipli del secondo. </p> <table class="wikitable"> <tbody><tr> <th>Fattore </th> <th><a href="/wiki/Simbolo" title="Simbolo">Simbolo</a> </th> <th><a href="/wiki/Unit%C3%A0_di_misura" title="Unità di misura">Unità di misura</a> </th></tr> <tr> <td>10<sup>24</sup> </td> <td>Ys </td> <td>yottasecondo </td></tr> <tr> <td>10<sup>21</sup> </td> <td>Zs </td> <td>zettasecondo </td></tr> <tr> <td>10<sup>18</sup> </td> <td>Es </td> <td>exasecondo </td></tr> <tr> <td>10<sup>15</sup> </td> <td>Ps </td> <td>petasecondo </td></tr> <tr> <td>10<sup>12</sup> </td> <td>Ts </td> <td>terasecondo </td></tr> <tr> <td>10<sup>9</sup> </td> <td>Gs </td> <td>gigasecondo </td></tr> <tr> <td>10<sup>6</sup> </td> <td>Ms </td> <td>megasecondo </td></tr> <tr> <td>10<sup>3</sup> </td> <td>ks </td> <td>kilosecondo </td></tr> <tr> <td>10<sup>0</sup> </td> <td>s </td> <td>secondo </td></tr> <tr> <td>10<sup>−3</sup> </td> <td>ms </td> <td><a href="/wiki/Millisecondo" title="Millisecondo">millisecondo</a> </td></tr> <tr> <td>10<sup>−6</sup> </td> <td>µs </td> <td><a href="/wiki/Microsecondo" title="Microsecondo">microsecondo</a> </td></tr> <tr> <td>10<sup>−9</sup> </td> <td>ns </td> <td><a href="/wiki/Nanosecondo" title="Nanosecondo">nanosecondo</a> </td></tr> <tr> <td>10<sup>−12</sup> </td> <td>ps </td> <td><a href="/wiki/Picosecondo" title="Picosecondo">picosecondo</a> </td></tr> <tr> <td>10<sup>−15</sup> </td> <td>fs </td> <td><a href="/wiki/Femtosecondo" title="Femtosecondo">femtosecondo</a> </td></tr> <tr> <td>10<sup>−18</sup> </td> <td>as </td> <td><a href="/wiki/Attosecondo" title="Attosecondo">attosecondo</a> </td></tr> <tr> <td>10<sup>−21</sup> </td> <td>zs </td> <td><a href="/wiki/Zeptosecondo" title="Zeptosecondo">zeptosecondo</a> </td></tr> <tr> <td>10<sup>−24</sup> </td> <td>ys </td> <td><a href="/wiki/Yoctosecondo" title="Yoctosecondo">yoctosecondo</a> </td></tr> </tbody></table> <p>L'<b>exasecondo</b> che equivale a circa 32 miliardi di anni e i suoi multipli non sono usati poiché superiori alla data stimata dell'universo dal <a href="/wiki/Big_bang" class="mw-redirect" title="Big bang">Big bang</a> (circa 10<sup>17</sup> secondi): quindi non ha senso esprimere periodi di tempo con queste <a href="/wiki/Unit%C3%A0_di_misura" title="Unità di misura">unità di misura</a> estremamente grandi persino per le età delle <a href="/wiki/Galassie" class="mw-redirect" title="Galassie">galassie</a> e dello stesso <a href="/wiki/Universo" title="Universo">universo</a>. </p><p>La seguente tabella illustra ulteriori multipli non ufficiali ma di uso comune del secondo. </p> <table class="wikitable"> <caption> </caption> <tbody><tr> <th>Fattore </th> <th>Simbolo </th> <th>Unità di misura </th></tr> <tr> <td>60 </td> <td>min (anche ') </td> <td><a href="/wiki/Minuto" title="Minuto">minuto primo</a> (abb. minuto) </td></tr> <tr> <td>3,6 × 10<sup>3</sup> </td> <td>h </td> <td><a href="/wiki/Ora" title="Ora">ora</a> </td></tr> <tr> <td>8,64 × 10<sup>4</sup> </td> <td>d </td> <td><a href="/wiki/Giorno" title="Giorno">giorno solare medio</a> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Note">Note</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Secondo&veaction=edit&section=3" title="Modifica la sezione Note" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Secondo&action=edit&section=3" title="Edit section's source code: Note"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-BIPM21-1"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-BIPM21_1-0">a</a></i></sup> <sup><i><a href="#cite_ref-BIPM21_1-1">b</a></i></sup></span> <span class="reference-text"> <cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="http://www.bipm.org/en/si/si_brochure/chapter2/2-1/second.html"><span style="font-style:italic;">Definizione ufficiale del BIPM</span></a>, su <span style="font-style:italic;">bipm.org</span>, <a href="/wiki/BIPM" class="mw-redirect" title="BIPM">BIPM</a>.</cite></span> </li> <li id="cite_note-26_CGPM_RES1-2"><a href="#cite_ref-26_CGPM_RES1_2-0"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://web.archive.org/web/20210204120336/https://www.bipm.org/en/CGPM/db/26/1/"><span style="font-style:italic;">BIPM - Resolution 1 of the 26th CGPM</span></a>, su <span style="font-style:italic;">bipm.org</span>. <small>URL consultato il 22 marzo 2019</small> <small>(archiviato dall'<abbr title="https://www.bipm.org/en/CGPM/db/26/1/">url originale</abbr> il 4 febbraio 2021)</small>.</cite></span> </li> <li id="cite_note-3"><a href="#cite_ref-3"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="https://www.treccani.it/enciclopedia/metrologia_(Enciclopedia-della-Scienza-e-della-Tecnica)"><span style="font-style:italic;">Metrologia in "Enciclopedia della Scienza e della Tecnica"</span></a>, su <span style="font-style:italic;">treccani.it</span>. <small>URL consultato il 25 marzo 2022</small>.</cite></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Voci_correlate">Voci 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href="https://it.wikipedia.org/w/index.php?title=Template:Unit%C3%A0_di_misura&action=edit"><span title="Modifica il template. 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width:22%;"><a href="/wiki/Sistema_internazionale_di_unit%C3%A0_di_misura" title="Sistema internazionale di unità di misura">Sistema internazionale</a></th><td colspan="1" class="navbox_list navbox_odd"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="text-align:center; width:22%;"><a href="/wiki/Unit%C3%A0_fondamentali_del_sistema_internazionale" title="Unità fondamentali del sistema internazionale">Unità di base</a></th><td colspan="1"><a class="mw-selflink selflink">secondo</a><b> ·</b> <a href="/wiki/Metro" title="Metro">metro</a><b> ·</b> <a href="/wiki/Chilogrammo" title="Chilogrammo">chilogrammo</a><b> ·</b> <a href="/wiki/Ampere" title="Ampere">ampere</a><b> ·</b> <a href="/wiki/Kelvin" title="Kelvin">kelvin</a><b> ·</b> <a href="/wiki/Mole" title="Mole">mole</a><b> ·</b> <a href="/wiki/Candela_(unit%C3%A0_di_misura)" title="Candela (unità di misura)">candela</a></td></tr><tr><th class="subnavbox_group" style="text-align:center; width:22%;">Unità derivate</th><td colspan="1"><a href="/wiki/Hertz" title="Hertz">hertz</a><b> ·</b> <a href="/wiki/Newton_(unit%C3%A0_di_misura)" title="Newton (unità di misura)">newton</a><b> ·</b> <a href="/wiki/Pascal_(unit%C3%A0_di_misura)" title="Pascal (unità di misura)">pascal</a><b> ·</b> <a href="/wiki/Joule" title="Joule">joule</a><b> ·</b> <a href="/wiki/Watt" title="Watt">watt</a><b> ·</b> <a href="/wiki/Coulomb" title="Coulomb">coulomb</a><b> ·</b> <a href="/wiki/Volt" title="Volt">volt</a><b> ·</b> <a href="/wiki/Ohm" title="Ohm">ohm</a><b> ·</b> <a href="/wiki/Siemens_(unit%C3%A0_di_misura)" title="Siemens (unità di misura)">siemens</a><b> ·</b> <a href="/wiki/Farad" title="Farad">farad</a><b> ·</b> <a href="/wiki/Tesla_(unit%C3%A0_di_misura)" title="Tesla (unità di misura)">tesla</a><b> ·</b> <a href="/wiki/Weber_(unit%C3%A0_di_misura)" title="Weber (unità di misura)">weber</a><b> ·</b> <a href="/wiki/Henry_(unit%C3%A0_di_misura)" title="Henry (unità di misura)">henry</a><b> ·</b> <a href="/wiki/Grado_Celsius" title="Grado Celsius">grado Celsius</a><b> ·</b> <a href="/wiki/Radiante" title="Radiante">radiante</a><b> ·</b> <a href="/wiki/Steradiante" title="Steradiante">steradiante</a><b> ·</b> <a href="/wiki/Lumen" title="Lumen">lumen</a><b> ·</b> <a href="/wiki/Lux" title="Lux">lux</a><b> ·</b> <a href="/wiki/Becquerel" title="Becquerel">becquerel</a><b> ·</b> <a href="/wiki/Gray_(unit%C3%A0_di_misura)" title="Gray (unità di misura)">gray</a><b> ·</b> <a href="/wiki/Sievert" title="Sievert">sievert</a><b> ·</b> <a href="/wiki/Katal" title="Katal">katal</a></td></tr></tbody></table></td></tr><tr><th colspan="1" class="navbox_group" style="text-align:center; width:22%;"><a href="/wiki/Sistema_CGS" title="Sistema CGS">Sistema CGS</a></th><td colspan="1" class="navbox_list navbox_even"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="text-align:center; width:22%;">Unità di base</th><td colspan="1"><a href="/wiki/Metro" title="Metro">centimetro</a><b> ·</b> <a href="/wiki/Grammo" title="Grammo">grammo</a><b> ·</b> <a class="mw-selflink selflink">secondo</a></td></tr><tr><th class="subnavbox_group" style="text-align:center; width:22%;">Unità derivate</th><td colspan="1"><a href="/wiki/Dyne" title="Dyne">dyne</a><b> ·</b> <a href="/wiki/Erg" title="Erg">erg</a><b> ·</b> <a href="/wiki/Baria" title="Baria">baria</a><b> ·</b> <a href="/wiki/Poise" title="Poise">poise</a><b> ·</b> <a href="/wiki/Statcoulomb" title="Statcoulomb">statcoulomb</a><b> ·</b> <a href="/wiki/Statvolt" title="Statvolt">statvolt</a><b> ·</b> <a href="/wiki/Oersted_(unit%C3%A0_di_misura)" title="Oersted (unità di misura)">oersted</a><b> ·</b> <a href="/wiki/Gauss_(unit%C3%A0_di_misura)" title="Gauss (unità di misura)">gauss</a><b> ·</b> <a href="/wiki/Maxwell_(unit%C3%A0_di_misura)" title="Maxwell (unità di misura)">maxwell</a><b> ·</b> <a href="/wiki/Rayl" title="Rayl">rayl</a><b> ·</b> <a href="/wiki/Gal" title="Gal">gal</a></td></tr></tbody></table></td></tr><tr><th colspan="1" class="navbox_group" style="text-align:center; width:22%;"><a href="/wiki/Sistema_pratico_degli_ingegneri" title="Sistema pratico degli ingegneri">Sistema Tecnico - MFS</a></th><td colspan="1" class="navbox_list navbox_odd"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="text-align:center; width:22%;">Unità di base</th><td colspan="1"><a href="/wiki/Metro" title="Metro">metro</a><b> ·</b> <a href="/wiki/Chilogrammo_forza" title="Chilogrammo forza">chilogrammo forza</a><b> ·</b> <a class="mw-selflink selflink">secondo</a></td></tr><tr><th class="subnavbox_group" style="text-align:center; width:22%;">Unità derivate</th><td colspan="1"><a href="/wiki/Unit%C3%A0_tecnica_di_massa" title="Unità tecnica di massa">unità tecnica di massa</a></td></tr></tbody></table></td></tr><tr><th colspan="1" class="navbox_group" style="text-align:center; width:22%;"><a href="/wiki/Sistema_MTS" title="Sistema MTS">Sistema MTS</a></th><td colspan="1" class="navbox_list navbox_even"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="text-align:center; width:22%;">Unità di base</th><td colspan="1"><a href="/wiki/Metro" title="Metro">metro</a><b> ·</b> <a href="/wiki/Tonnellata" title="Tonnellata">tonnellata</a><b> ·</b> <a class="mw-selflink selflink">secondo</a></td></tr><tr><th class="subnavbox_group" style="text-align:center; width:22%;">Unità derivate</th><td colspan="1"><a href="/wiki/Sth%C3%A8ne" title="Sthène">sthène</a><b> ·</b> <a href="/wiki/Joule" title="Joule">chilojoule</a><b> ·</b> <a href="/wiki/Watt" title="Watt">chilowatt</a><b> ·</b> <a href="/wiki/Pi%C3%A8ze" title="Pièze">pièze</a></td></tr></tbody></table></td></tr><tr><th colspan="1" class="navbox_group" style="text-align:center; width:22%;"><a href="/wiki/Unit%C3%A0_atomiche" title="Unità atomiche">Unità atomiche</a></th><td colspan="1" class="navbox_list navbox_odd"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="text-align:center; width:22%;">Unità di base</th><td colspan="1"><a href="/wiki/Raggio_di_Bohr" title="Raggio di Bohr">raggio di Bohr</a><b> ·</b> <a href="/wiki/Massa_a_riposo_dell%27elettrone" title="Massa a riposo dell'elettrone">massa a riposo dell'elettrone</a><b> ·</b> <a href="/wiki/Carica_elementare" title="Carica elementare">carica elementare</a><b> ·</b> <a href="/wiki/Costante_di_Planck#Valore" title="Costante di Planck">costante di Dirac</a><b> ·</b> <a href="/wiki/Energia_di_Hartree" title="Energia di Hartree">energia di Hartree</a></td></tr></tbody></table></td></tr><tr><th colspan="1" class="navbox_group" style="text-align:center; width:22%;"><a href="/wiki/Unit%C3%A0_di_misura_di_Planck" title="Unità di misura di Planck">Unità di misura di Planck</a></th><td colspan="1" class="navbox_list navbox_even"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="text-align:center; width:22%;">Unità di base</th><td colspan="1"><a href="/wiki/Tempo_di_Planck" title="Tempo di Planck">tempo di Planck</a><b> ·</b> <a href="/wiki/Lunghezza_di_Planck" title="Lunghezza di Planck">lunghezza di Planck</a><b> ·</b> <a href="/wiki/Massa_di_Planck" title="Massa di Planck">massa di Planck</a><b> ·</b> <a href="/wiki/Carica_di_Planck" title="Carica di Planck">carica di Planck</a><b> ·</b> <a href="/wiki/Temperatura_di_Planck" title="Temperatura di Planck">temperatura di Planck</a><b> ·</b> <a href="/wiki/Costante_di_Planck" title="Costante di Planck">quanto del momento angolare</a></td></tr><tr><th class="subnavbox_group" style="text-align:center; width:22%;">Unità derivate</th><td colspan="1"><a href="/wiki/Energia_di_Planck" title="Energia di Planck">energia di Planck</a><b> ·</b> <a href="/wiki/Forza_di_Planck" class="mw-redirect" title="Forza di Planck">forza di Planck</a><b> ·</b> <a href="/wiki/Potenza_di_Planck" class="mw-redirect" title="Potenza di Planck">potenza di Planck</a><b> ·</b> <a href="/wiki/Densit%C3%A0_di_Planck" class="mw-redirect" title="Densità di Planck">densità di Planck</a><b> ·</b> <a href="/wiki/Frequenza_angolare_di_Planck" class="mw-redirect" title="Frequenza angolare di Planck">frequenza angolare di Planck</a><b> ·</b> <a href="/wiki/Pressione_di_Planck" class="mw-redirect" title="Pressione di Planck">pressione di Planck</a><b> ·</b> <a href="/wiki/Corrente_di_Planck" class="mw-redirect" title="Corrente di Planck">corrente di Planck</a><b> ·</b> <a href="/wiki/Tensione_di_Planck" class="mw-redirect" title="Tensione di Planck">tensione di Planck</a><b> ·</b> <a href="/wiki/Resistenza_di_Planck" class="mw-redirect" title="Resistenza di Planck">resistenza di Planck</a></td></tr></tbody></table></td></tr><tr><th colspan="1" class="navbox_group" style="text-align:center; width:22%;">Altre unità di misura</th><td colspan="1" class="navbox_list navbox_odd"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="text-align:center; width:22%;"><a href="/wiki/Area" title="Area">Area</a></th><td colspan="1"><a href="/wiki/Ettaro" title="Ettaro">ettaro</a></td></tr><tr><th class="subnavbox_group" style="text-align:center; width:22%;"><a href="/wiki/Densit%C3%A0_lineare" title="Densità lineare">Densità lineare</a></th><td colspan="1"><a href="/wiki/Denaro_(unit%C3%A0_di_misura)" title="Denaro (unità di misura)">denaro</a><b> ·</b> <a href="/wiki/Tex_(unit%C3%A0_di_misura)" title="Tex (unità di misura)">tex</a></td></tr><tr><th class="subnavbox_group" style="text-align:center; width:22%;"><a href="/wiki/Entropia" title="Entropia">Entropia</a></th><td colspan="1"><a href="/wiki/Clausius_(unit%C3%A0_di_misura)" title="Clausius (unità di misura)">clausius</a></td></tr><tr><th class="subnavbox_group" style="text-align:center; width:22%;"><a href="/wiki/Massa_(fisica)" title="Massa (fisica)">Massa</a></th><td colspan="1"><a href="/wiki/Grano_(unit%C3%A0_di_misura)" title="Grano (unità di misura)">grano</a><b> ·</b> <a href="/wiki/Scruple" title="Scruple">scruple</a><b> ·</b> <a href="/wiki/Dramma_(unit%C3%A0_di_misura)" title="Dramma (unità di misura)">dramma</a><b> ·</b> <a href="/wiki/Oncia_(unit%C3%A0_di_misura)" title="Oncia (unità di misura)">oncia</a><b> ·</b> <a href="/wiki/Libbra" title="Libbra">libbra</a><b> ·</b> <a href="/wiki/Pietra_(unit%C3%A0_di_misura)" class="mw-redirect" title="Pietra (unità di misura)">pietra</a><b> ·</b> <a href="/wiki/Quarto_(unit%C3%A0_di_misura)" title="Quarto (unità di misura)">quarto</a><b> ·</b> <a href="/wiki/Slug_(unit%C3%A0_di_misura)" title="Slug (unità di misura)">slug</a></td></tr><tr><th class="subnavbox_group" style="text-align:center; width:22%;"><a href="/wiki/Temperatura" title="Temperatura">Temperatura</a></th><td colspan="1"><a href="/wiki/Grado_R%C3%B8mer" title="Grado Rømer">grado Rømer</a></td></tr><tr><th class="subnavbox_group" style="text-align:center; width:22%;"><a href="/wiki/Energia" title="Energia">Energia</a></th><td colspan="1"><a href="/wiki/Caloria" title="Caloria">caloria</a><b> ·</b> <a href="/wiki/Frigoria" title="Frigoria">frigoria</a></td></tr><tr><th class="subnavbox_group" style="text-align:center; width:22%;"><a href="/wiki/Lunghezza" title="Lunghezza">lunghezza</a> in astronomia</th><td colspan="1"><a href="/wiki/Unit%C3%A0_astronomica" title="Unità astronomica">unità astronomica</a><b> ·</b> <a href="/wiki/Anno_luce" title="Anno luce">anno luce</a><b> ·</b> <a href="/wiki/Parsec" title="Parsec">parsec</a></td></tr></tbody></table></td></tr></tbody></table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r141815314"><table class="navbox mw-collapsible mw-collapsed noprint metadata" id="navbox-Tempo"><tbody><tr><th colspan="3" style="background:#ee9;"><div class="navbox_navbar"><div class="noprint plainlinks" style="background-color:transparent; padding:0; font-size:xx-small; color:var(--color-base, #000000); white-space:nowrap;"><a href="/wiki/Template:Tempo" title="Template:Tempo"><span title="Vai alla pagina del template">V</span></a> · <a href="/w/index.php?title=Discussioni_template:Tempo&action=edit&redlink=1" class="new" title="Discussioni template:Tempo (la pagina non esiste)"><span title="Discuti del template">D</span></a> · <a class="external text" href="https://it.wikipedia.org/w/index.php?title=Template:Tempo&action=edit"><span title="Modifica il template. Usa l'anteprima prima di salvare">M</span></a></div></div><span class="navbox_title"><a href="/wiki/Tempo" title="Tempo">Tempo</a></span></th></tr><tr><th colspan="1" class="navbox_group" style="background:#dd9;">Concetti principali</th><td colspan="1" class="navbox_list navbox_odd"><a href="/wiki/Tempo" title="Tempo">Tempo</a><b> ·</b> <a href="/wiki/Eternit%C3%A0" title="Eternità">Eternità</a><b> ·</b> <a href="/wiki/Immortalit%C3%A0" title="Immortalità">Immortalità</a><br /> <a href="/wiki/Tempo_profondo" title="Tempo profondo">Tempo profondo</a><b> ·</b> <a href="/wiki/Storia" title="Storia">Storia</a><b> ·</b> <a href="/wiki/Passato" title="Passato">Passato</a><b> ·</b> <a href="/wiki/Presente" title="Presente">Presente</a><b> ·</b> <a href="/wiki/Futuro" title="Futuro">Futuro</a><b> ·</b> <a href="/wiki/Futurologia" title="Futurologia">Futurologia</a><br /></td><td rowspan="10" class="navbox_image"><span typeof="mw:File"><a href="/wiki/File:Chronos_Saturnus_-_De_Sphaera.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Chronos_Saturnus_-_De_Sphaera.png/80px-Chronos_Saturnus_-_De_Sphaera.png" decoding="async" width="80" height="93" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Chronos_Saturnus_-_De_Sphaera.png/120px-Chronos_Saturnus_-_De_Sphaera.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/65/Chronos_Saturnus_-_De_Sphaera.png/160px-Chronos_Saturnus_-_De_Sphaera.png 2x" data-file-width="292" data-file-height="340" /></a></span> <span typeof="mw:File"><a href="/wiki/File:Wooden_hourglass_3.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Wooden_hourglass_3.jpg/76px-Wooden_hourglass_3.jpg" decoding="async" width="76" height="154" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Wooden_hourglass_3.jpg/114px-Wooden_hourglass_3.jpg 1.5x, 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title="Tempo solare">Tempo solare</a><b> ·</b> <a href="/wiki/Fuso_orario" title="Fuso orario">Fuso orario</a><br /> <p><a href="/wiki/Orologio" title="Orologio">Orologio</a><b> ·</b> <a href="/wiki/Orologeria" title="Orologeria">Orologeria</a><b> ·</b> <a href="/wiki/Storia_della_misurazione_del_tempo" title="Storia della misurazione del tempo">Storia della misurazione del tempo</a><b> ·</b> <a href="/wiki/Planetario" title="Planetario">Astrario</a><b> ·</b> <a href="/w/index.php?title=Cronometro_marino&action=edit&redlink=1" class="new" title="Cronometro marino (la pagina non esiste)">Cronometro marino</a><b> ·</b> <a href="/wiki/Meridiana" title="Meridiana">Meridiana</a><b> ·</b> <a href="/wiki/Clessidra" title="Clessidra">Clessidra</a> (<a href="/wiki/Clessidra_ad_acqua" title="Clessidra ad acqua">ad acqua)</a><b> ·</b> <a href="/wiki/Orologio_a_incenso" title="Orologio a incenso">Orologio a incenso</a><b> ·</b> <a href="/wiki/Cronometro" title="Cronometro">Cronometro</a><br /> </p><p><a href="/wiki/Calendario" title="Calendario">Calendario</a><b> ·</b> <a href="/wiki/Giorno" title="Giorno">Giorno</a><b> ·</b> <a href="/wiki/Settimana" title="Settimana">Settimana</a><b> ·</b> <a href="/wiki/Mese" title="Mese">Mese</a><b> ·</b> <a href="/wiki/Anno" title="Anno">Anno</a><b> ·</b> <a href="/wiki/Anno_tropico" title="Anno tropico">Anno tropico</a><b> ·</b> <a href="/wiki/Calendario_giuliano" title="Calendario giuliano">Giuliano</a><b> ·</b> <a href="/wiki/Calendario_gregoriano" title="Calendario gregoriano">Gregoriano</a><b> ·</b> <a href="/wiki/Calendario_islamico" title="Calendario islamico">Islamico</a><br /> </p> <a href="/wiki/Intercalazione_(cronologia)" title="Intercalazione (cronologia)">Intercalazione</a><b> ·</b> <a href="/wiki/Secondo_intercalare" title="Secondo intercalare">Secondo intercalare</a><b> ·</b> <a href="/wiki/Anno_bisestile" title="Anno bisestile">Anno bisestile</a></td></tr><tr><th colspan="1" class="navbox_group" style="background:#dd9;"><a href="/wiki/Cronologia" title="Cronologia">Cronologia</a></th><td colspan="1" class="navbox_list navbox_odd"><a href="/wiki/Cronologia_astronomica" title="Cronologia astronomica">Cronologia astronomica</a><b> ·</b> <a href="/wiki/Scala_dei_tempi_geologici" title="Scala dei tempi geologici">Tempo geologico</a><b> ·</b> <a href="/w/index.php?title=Storia_geologica_della_Terra&action=edit&redlink=1" class="new" title="Storia geologica della Terra (la pagina non esiste)">Storia geologica</a><b> ·</b> <a href="/wiki/Geocronologia" class="mw-redirect" title="Geocronologia">Geocronologia</a><b> ·</b> <a href="/w/index.php?title=Datazione_(archeologia)&action=edit&redlink=1" class="new" title="Datazione (archeologia) (la pagina non esiste)">Datazione archeologica</a><br /> <a href="/wiki/Era_del_calendario" title="Era del calendario">Era del calendario</a><b> ·</b> <a href="/w/index.php?title=Anno_di_regno&action=edit&redlink=1" class="new" title="Anno di regno (la pagina non esiste)">Anno di regno</a><b> ·</b> <a href="/wiki/Cronaca_(genere_letterario)" title="Cronaca (genere letterario)">Cronaca</a><b> ·</b> <a href="/wiki/Periodizzazione" title="Periodizzazione">Periodizzazione</a></td></tr><tr><th colspan="1" class="navbox_group" style="background:#dd9;">Religione e mitologia</th><td colspan="1" class="navbox_list navbox_even"><a href="/wiki/Chronos_(mitologia)" title="Chronos (mitologia)">Chronos</a><b> ·</b> <a href="/wiki/Decani" title="Decani">Decani</a><b> ·</b> <a href="/wiki/Eone_(cosmologia)" title="Eone (cosmologia)">Eone</a><b> ·</b> <i><a href="/wiki/Kairos" title="Kairos">Kairós</a></i><b> ·</b> <i><a href="/wiki/K%C4%81la" title="Kāla">Kāla</a></i><b> ·</b> <a href="/wiki/K%C4%81lacakratantra" title="Kālacakratantra">Kālacakratantra</a><b> ·</b> <a href="/wiki/Padre_Tempo" title="Padre Tempo">Padre Tempo</a><b> ·</b> <a href="/wiki/Profezia" title="Profezia">Profezia</a><b> ·</b> <a href="/wiki/Ruota_dell%27esistenza" title="Ruota dell'esistenza">Ruota del tempo</a><b> ·</b> <a href="/wiki/Spirito_del_tempo" title="Spirito del tempo">Spirito del tempo</a><b> ·</b> <a href="/wiki/Tempo_del_Sogno" title="Tempo del Sogno">Tempo del Sogno</a></td></tr><tr><th colspan="1" class="navbox_group" style="background:#dd9;"><a href="/wiki/Concezione_del_tempo" title="Concezione del tempo">Filosofia</a></th><td colspan="1" class="navbox_list navbox_odd"><a href="/wiki/Causa_(filosofia)" title="Causa (filosofia)">Causalità</a><b> ·</b> <a href="/wiki/Eterno_ritorno" title="Eterno ritorno">Eterno ritorno</a><b> ·</b> <a href="/wiki/Evento_(teoria_della_probabilit%C3%A0)" title="Evento (teoria della probabilità)">Evento</a><b> ·</b> <a href="/wiki/Kalpa" title="Kalpa">Kalpa</a><b> ·</b> <a href="/wiki/Presentismo" title="Presentismo">Presentismo</a><b> ·</b> <a href="/wiki/Sincronicit%C3%A0" title="Sincronicità">Sincronicità</a><b> ·</b> <a href="/wiki/Tempo_ciclico" class="mw-redirect" title="Tempo ciclico">Tempo ciclico</a><b> ·</b> <a href="/wiki/Filosofia_della_storia" title="Filosofia della storia">Tempo storico</a><b> ·</b> <a href="/wiki/Yuga" title="Yuga">Yuga</a></td></tr><tr><th colspan="1" class="navbox_group" style="background:#dd9;">Scienze fisiche</th><td colspan="1" class="navbox_list navbox_even"><a href="/wiki/Tempo_(fisica)" class="mw-redirect" title="Tempo (fisica)">Tempo in fisica</a><b> ·</b> <a href="/wiki/Spaziotempo" title="Spaziotempo">Spaziotempo</a><b> ·</b> <a href="/wiki/Tempo_assoluto" class="mw-redirect" title="Tempo assoluto">Tempo assoluto</a><b> ·</b> <a href="/wiki/Simmetria_temporale" title="Simmetria temporale">Simmetria temporale</a><br /> <p><a href="/wiki/Freccia_del_tempo" title="Freccia del tempo">Freccia del tempo</a><b> ·</b> <a href="/wiki/Chronon" title="Chronon">Chronon</a><b> ·</b> <a href="/wiki/Quarta_dimensione" title="Quarta dimensione">Quarta dimensione</a><b> ·</b> <a href="/w/index.php?title=Epoca_di_Planck&action=edit&redlink=1" class="new" title="Epoca di Planck (la pagina non esiste)">Epoca di Planck</a><b> ·</b> <a href="/wiki/Tempo_di_Planck" title="Tempo di Planck">Tempo di Planck</a><b> ·</b> <a href="/wiki/Dominio_del_tempo" title="Dominio del tempo">Dominio del tempo</a><b> ·</b> <a href="/wiki/Dimensioni_temporali_multiple" title="Dimensioni temporali multiple">Dimensioni temporali multiple</a><br /> </p> <a href="/wiki/Teoria_della_relativit%C3%A0" title="Teoria della relatività">Teoria della relatività</a><b> ·</b> <a href="/wiki/Dilatazione_del_tempo" title="Dilatazione del tempo">Dilatazione del tempo</a><b> ·</b> <a href="/wiki/Dilatazione_temporale_gravitazionale" title="Dilatazione temporale gravitazionale">Dilatazione gravitazionale del tempo</a><b> ·</b> <a href="/w/index.php?title=Tempo_coordinato&action=edit&redlink=1" class="new" title="Tempo coordinato (la pagina non esiste)">Tempo coordinato</a><b> ·</b> <a href="/wiki/Tempo_proprio" title="Tempo proprio">Tempo proprio</a></td></tr><tr><th colspan="1" class="navbox_group" style="background:#dd9;">Biologia</th><td colspan="1" class="navbox_list navbox_odd"><a href="/wiki/Cronobiologia" title="Cronobiologia">Cronobiologia</a><b> ·</b> <a href="/wiki/Ritmo_circadiano" title="Ritmo circadiano">Ritmi circadiani</a><b> ·</b> <a href="/wiki/Tempo_di_reazione" class="mw-redirect" title="Tempo di reazione">Tempo di reazione</a></td></tr><tr><th colspan="1" class="navbox_group" style="background:#dd9;">Sociologia e antropologia</th><td colspan="1" class="navbox_list navbox_even"><a href="/wiki/Cronemica" title="Cronemica">Cronemica</a><b> ·</b> <a href="/wiki/Futurologia" title="Futurologia">Futurologia</a><b> ·</b> <a href="/wiki/Long_Now_Foundation" title="Long Now Foundation">Long Now Foundation</a><b> ·</b></td></tr><tr><th colspan="1" class="navbox_group" style="background:#dd9;">Scienze economiche</th><td colspan="1" class="navbox_list navbox_odd"><a href="/w/index.php?title=Tempo_newtoniano_nelle_scienze_economiche&action=edit&redlink=1" class="new" title="Tempo newtoniano nelle scienze economiche (la pagina non esiste)">Tempo newtoniano nelle scienze economiche</a><b> ·</b> <a href="/w/index.php?title=Valore_tempo_del_denaro&action=edit&redlink=1" class="new" title="Valore tempo del denaro (la pagina non esiste)">Valore tempo del denaro</a><b> ·</b> <a href="/w/index.php?title=Tempo_bancario&action=edit&redlink=1" class="new" title="Tempo bancario (la pagina non esiste)">Tempo bancario</a><b> ·</b> <a href="/wiki/Banca_del_tempo" title="Banca del tempo">Banca del tempo</a><b> ·</b> <a href="/wiki/Ora_legale" title="Ora legale">Ora legale</a></td></tr><tr><th colspan="1" class="navbox_group" style="background:#dd9;">Argomenti correlati</th><td colspan="1" class="navbox_list navbox_even"><a href="/wiki/Spazio_(fisica)" title="Spazio (fisica)">Spazio</a><b> ·</b> <a href="/wiki/Durata" title="Durata">Durata</a><b> ·</b> <a 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