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sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Joule rootpage-Joule skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Vés al contingut</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Lloc"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Menú principal" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Menú principal</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Menú principal</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">amaga</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navegació </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Portada" title="Visiteu la pàgina principal [z]" accesskey="z"><span>Portada</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Especial:Article_aleatori" title="Carrega una pàgina a l’atzar [x]" accesskey="x"><span>Article a l'atzar</span></a></li><li id="n-Articles-de-qualitat" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Articles_de_qualitat"><span>Articles de qualitat</span></a></li> </ul> </div> </div> <div id="p-Comunitat" class="vector-menu mw-portlet mw-portlet-Comunitat" > <div class="vector-menu-heading"> Comunitat </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-portal" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Portal" title="Sobre el projecte, què podeu fer, on trobareu les coses"><span>Portal viquipedista</span></a></li><li id="n-Agenda-d'actes" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Trobades"><span>Agenda d'actes</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Especial:Canvis_recents" title="Una llista dels canvis recents al wiki [r]" accesskey="r"><span>Canvis recents</span></a></li><li id="n-La-taverna" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:La_taverna"><span>La taverna</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Contacte"><span>Contacte</span></a></li><li id="n-Xat" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Canals_IRC"><span>Xat</span></a></li><li id="n-help" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Ajuda" title="El lloc per a saber més coses"><span>Ajuda</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Portada" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Viquipèdia" src="/static/images/mobile/copyright/wikipedia-wordmark-ca.svg" style="width: 7.5em; height: 1.4375em;"> <img class="mw-logo-tagline" alt="l'Enciclopèdia Lliure" src="/static/images/mobile/copyright/wikipedia-tagline-ca.svg" width="120" height="14" style="width: 7.5em; height: 0.875em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Especial:Cerca" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Cerca a la Viquipèdia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Cerca</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Cerca a Viquipèdia" aria-label="Cerca a Viquipèdia" autocapitalize="sentences" title="Cerca a la Viquipèdia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Especial:Cerca"> </div> <button class="cdx-button cdx-search-input__end-button">Cerca</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Eines personals"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Aparença"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Aparença" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Aparença</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_ca.wikipedia.org&uselang=ca" class=""><span>Donatius</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=Especial:Crea_compte&returnto=Joule" title="Us animem a crear un compte i iniciar una sessió, encara que no és obligatori" class=""><span>Crea un compte</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=Especial:Registre_i_entrada&returnto=Joule" title="Us animem a registrar-vos, però no és obligatori [o]" accesskey="o" class=""><span>Inicia la sessió</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="Més opcions" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Eines personals" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Eines personals</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Menú d'usuari" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_ca.wikipedia.org&uselang=ca"><span>Donatius</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Especial:Crea_compte&returnto=Joule" title="Us animem a crear un compte i iniciar una sessió, encara que no és obligatori"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Crea un compte</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Especial:Registre_i_entrada&returnto=Joule" title="Us animem a registrar-vos, però no és obligatori [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Inicia la sessió</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"> Pàgines per a editors no registrats <a href="/wiki/Ajuda:Introducci%C3%B3" aria-label="Vegeu més informació sobre l'edició"><span>més informació</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Especial:Contribucions_pr%C3%B2pies" title="Una llista de les modificacions fetes des d'aquesta adreça IP [y]" accesskey="y"><span>Contribucions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Especial:Discussi%C3%B3_personal" title="Discussió sobre les edicions per aquesta adreça ip. [n]" accesskey="n"><span>Discussió per aquest IP</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Lloc"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contingut" 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">Contingut</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">amaga</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">Inici</div> </a> </li> <li id="toc-Definició" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Definició"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Definició</span> </div> </a> <ul id="toc-Definició-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Història" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Història"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Història</span> </div> </a> <ul id="toc-Història-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Múltiples_del_joule" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Múltiples_del_joule"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Múltiples del joule</span> </div> </a> <ul id="toc-Múltiples_del_joule-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Ordre_de_magnitud" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Ordre_de_magnitud"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Ordre de magnitud</span> </div> </a> <ul id="toc-Ordre_de_magnitud-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Exemples_pràctics" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Exemples_pràctics"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Exemples pràctics</span> </div> </a> <ul id="toc-Exemples_pràctics-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Conversions" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Conversions"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Conversions</span> </div> </a> <ul id="toc-Conversions-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Newton-metre_i_parell" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Newton-metre_i_parell"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Newton-metre i parell</span> </div> </a> <ul id="toc-Newton-metre_i_parell-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Watt-segon" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Watt-segon"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Watt-segon</span> </div> </a> <ul id="toc-Watt-segon-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Referències" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referències"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>Referències</span> </div> </a> <ul id="toc-Referències-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Enllaços_externs" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Enllaços_externs"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>Enllaços externs</span> </div> </a> <ul id="toc-Enllaços_externs-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="Contingut" 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="Commuta la taula de continguts." > <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">Commuta la taula de continguts.</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">Joule</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="Vés a un article en una altra llengua. Disponible en 107 llengües" > <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-107" 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">107 llengües</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/Joule" title="Joule - afrikaans" lang="af" hreflang="af" data-title="Joule" 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/Joule" title="Joule - alemany suís" lang="gsw" hreflang="gsw" data-title="Joule" data-language-autonym="Alemannisch" data-language-local-name="alemany suís" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Joule" title="Joule - aragonès" lang="an" hreflang="an" data-title="Joule" data-language-autonym="Aragonés" data-language-local-name="aragonès" 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%AC%D9%88%D9%84" title="جول - àrab" lang="ar" hreflang="ar" data-title="جول" data-language-autonym="العربية" data-language-local-name="àrab" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%AC%D9%88%D9%84_(%D8%B7%D8%A7%D9%82%D8%A9)" title="جول (طاقة) - àrab egipci" lang="arz" hreflang="arz" data-title="جول (طاقة)" data-language-autonym="مصرى" data-language-local-name="àrab egipci" 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%9C%E0%A7%81%E0%A6%B2" title="জুল - assamès" lang="as" hreflang="as" data-title="জুল" data-language-autonym="অসমীয়া" data-language-local-name="assamès" 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/Xuliu_(unid%C3%A1)" title="Xuliu (unidá) - asturià" lang="ast" hreflang="ast" data-title="Xuliu (unidá)" data-language-autonym="Asturianu" data-language-local-name="asturià" 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/Coul" title="Coul - azerbaidjanès" lang="az" hreflang="az" data-title="Coul" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaidjanès" 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/%DA%98%D9%88%D9%84" title="ژول - South Azerbaijani" lang="azb" hreflang="azb" data-title="ژول" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/D%C5%BEaul%C4%97s" title="Džaulės - Samogitian" lang="sgs" hreflang="sgs" data-title="Džaulės" data-language-autonym="Žemaitėška" data-language-local-name="Samogitian" class="interlanguage-link-target"><span>Žemaitėška</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%94%D0%B6%D0%BE%D1%9E%D0%BB%D1%8C_(%D0%B0%D0%B4%D0%B7%D1%96%D0%BD%D0%BA%D0%B0_%D0%B2%D1%8B%D0%BC%D1%8F%D1%80%D1%8D%D0%BD%D0%BD%D1%8F)" title="Джоўль (адзінка вымярэння) - belarús" lang="be" hreflang="be" data-title="Джоўль (адзінка вымярэння)" data-language-autonym="Беларуская" data-language-local-name="belarús" 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%94%D0%B6%D0%BE%D1%9E%D0%BB%D1%8C" title="Джоўль - Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Джоўль" 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-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%94%D0%B6%D0%B0%D1%83%D0%BB" title="Джаул - búlgar" lang="bg" hreflang="bg" data-title="Джаул" data-language-autonym="Български" data-language-local-name="búlgar" 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%9C%E0%A7%81%E0%A6%B2" title="জুল - bengalí" lang="bn" hreflang="bn" data-title="জুল" data-language-autonym="বাংলা" data-language-local-name="bengalí" 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%85%E0%BD%BC%E0%BD%A3%E0%BC%8D" title="ཅོལ། - tibetà" lang="bo" hreflang="bo" data-title="ཅོལ།" data-language-autonym="བོད་ཡིག" data-language-local-name="tibetà" 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/Joul" title="Joul - bretó" lang="br" hreflang="br" data-title="Joul" data-language-autonym="Brezhoneg" data-language-local-name="bretó" 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/D%C5%BEul" title="Džul - bosnià" lang="bs" hreflang="bs" data-title="Džul" data-language-autonym="Bosanski" data-language-local-name="bosnià" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%AC%D9%88%D9%88%DA%B5" title="جووڵ - kurd central" lang="ckb" hreflang="ckb" data-title="جووڵ" data-language-autonym="کوردی" data-language-local-name="kurd central" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Joule" title="Joule - txec" lang="cs" hreflang="cs" data-title="Joule" data-language-autonym="Čeština" data-language-local-name="txec" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%94%D0%B6%D0%BE%D1%83%D0%BB%D1%8C" title="Джоуль - txuvaix" lang="cv" hreflang="cv" data-title="Джоуль" data-language-autonym="Чӑвашла" data-language-local-name="txuvaix" 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/Joule" title="Joule - gal·lès" lang="cy" hreflang="cy" data-title="Joule" data-language-autonym="Cymraeg" data-language-local-name="gal·lès" 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/Joule" title="Joule - danès" lang="da" hreflang="da" data-title="Joule" data-language-autonym="Dansk" data-language-local-name="danès" 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/Joule" title="Joule - alemany" lang="de" hreflang="de" data-title="Joule" data-language-autonym="Deutsch" data-language-local-name="alemany" 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%A4%CE%B6%CE%AC%CE%BF%CF%85%CE%BB_(%CE%BC%CE%BF%CE%BD%CE%AC%CE%B4%CE%B1_%CE%BC%CE%AD%CF%84%CF%81%CE%B7%CF%83%CE%B7%CF%82)" title="Τζάουλ (μονάδα μέτρησης) - grec" lang="el" hreflang="el" data-title="Τζάουλ (μονάδα μέτρησης)" data-language-autonym="Ελληνικά" data-language-local-name="grec" 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/Joule" title="Joule - anglès" lang="en" hreflang="en" data-title="Joule" data-language-autonym="English" data-language-local-name="anglès" 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/%C4%B4ulo" title="Ĵulo - esperanto" lang="eo" hreflang="eo" data-title="Ĵulo" 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/Julio_(unidad)" title="Julio (unidad) - espanyol" lang="es" hreflang="es" data-title="Julio (unidad)" data-language-autonym="Español" data-language-local-name="espanyol" 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/D%C5%BEaul" title="Džaul - estonià" lang="et" hreflang="et" data-title="Džaul" data-language-autonym="Eesti" data-language-local-name="estonià" 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/Joule_(unitatea)" title="Joule (unitatea) - basc" lang="eu" hreflang="eu" data-title="Joule (unitatea)" data-language-autonym="Euskara" data-language-local-name="basc" 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/%DA%98%D9%88%D9%84" title="ژول - persa" lang="fa" hreflang="fa" data-title="ژول" data-language-autonym="فارسی" data-language-local-name="persa" 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/Joule" title="Joule - finès" lang="fi" hreflang="fi" data-title="Joule" data-language-autonym="Suomi" data-language-local-name="finès" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Joule" title="Joule - francès" lang="fr" hreflang="fr" data-title="Joule" data-language-autonym="Français" data-language-local-name="francès" 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/Joule_(ianhaid)" title="Joule (ianhaid) - frisó septentrional" lang="frr" hreflang="frr" data-title="Joule (ianhaid)" data-language-autonym="Nordfriisk" data-language-local-name="frisó septentrional" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Gi%C3%BAl" title="Giúl - irlandès" lang="ga" hreflang="ga" data-title="Giúl" data-language-autonym="Gaeilge" data-language-local-name="irlandès" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/Joule" title="Joule - gaèlic escocès" lang="gd" hreflang="gd" data-title="Joule" data-language-autonym="Gàidhlig" data-language-local-name="gaèlic escocès" class="interlanguage-link-target"><span>Gàidhlig</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Joule" title="Joule - gallec" lang="gl" hreflang="gl" data-title="Joule" data-language-autonym="Galego" data-language-local-name="gallec" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%9C%E0%AB%82%E0%AA%B2" title="જૂલ - gujarati" lang="gu" hreflang="gu" data-title="જૂલ" data-language-autonym="ગુજરાતી" data-language-local-name="gujarati" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%92%27%D7%95%D7%9C" title="ג'ול - hebreu" lang="he" hreflang="he" data-title="ג'ול" data-language-autonym="עברית" data-language-local-name="hebreu" 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%9C%E0%A5%82%E0%A4%B2_(%E0%A4%87%E0%A4%95%E0%A4%BE%E0%A4%88)" title="जूल (इकाई) - hindi" lang="hi" hreflang="hi" data-title="जूल (इकाई)" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/D%C5%BEul" title="Džul - croat" lang="hr" hreflang="hr" data-title="Džul" data-language-autonym="Hrvatski" data-language-local-name="croat" 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/Joul" title="Joul - crioll d’Haití" lang="ht" hreflang="ht" data-title="Joul" data-language-autonym="Kreyòl ayisyen" data-language-local-name="crioll d’Haití" 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/Joule" title="Joule - hongarès" lang="hu" hreflang="hu" data-title="Joule" data-language-autonym="Magyar" data-language-local-name="hongarès" 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%8B%D5%B8%D5%B8%D6%82%D5%AC" title="Ջոուլ - armeni" lang="hy" hreflang="hy" data-title="Ջոուլ" data-language-autonym="Հայերեն" data-language-local-name="armeni" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Joule" title="Joule - interlingua" lang="ia" hreflang="ia" data-title="Joule" 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/Joule" title="Joule - indonesi" lang="id" hreflang="id" data-title="Joule" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesi" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/J%C3%BAl" title="Júl - islandès" lang="is" hreflang="is" data-title="Júl" data-language-autonym="Íslenska" data-language-local-name="islandès" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Joule" title="Joule - italià" lang="it" hreflang="it" data-title="Joule" data-language-autonym="Italiano" data-language-local-name="italià" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%B8%E3%83%A5%E3%83%BC%E3%83%AB" title="ジュール - japonès" lang="ja" hreflang="ja" data-title="ジュール" data-language-autonym="日本語" data-language-local-name="japonès" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%AF%E1%83%9D%E1%83%A3%E1%83%9A%E1%83%98" title="ჯოული - georgià" lang="ka" hreflang="ka" data-title="ჯოული" data-language-autonym="ქართული" data-language-local-name="georgià" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%94%D0%B6%D0%BE%D1%83%D0%BB%D1%8C" title="Джоуль - kazakh" lang="kk" hreflang="kk" data-title="Джоуль" data-language-autonym="Қазақша" data-language-local-name="kazakh" 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%A4%84_(%EB%8B%A8%EC%9C%84)" title="줄 (단위) - coreà" lang="ko" hreflang="ko" data-title="줄 (단위)" data-language-autonym="한국어" data-language-local-name="coreà" 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%94%D0%B6%D0%BE%D1%83%D0%BB%D1%8C" title="Джоуль - karatxai-balkar" lang="krc" hreflang="krc" data-title="Джоуль" data-language-autonym="Къарачай-малкъар" data-language-local-name="karatxai-balkar" class="interlanguage-link-target"><span>Къарачай-малкъар</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Joule" title="Joule - kurd" lang="ku" hreflang="ku" data-title="Joule" data-language-autonym="Kurdî" data-language-local-name="kurd" 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/Joule" title="Joule - còrnic" lang="kw" hreflang="kw" data-title="Joule" data-language-autonym="Kernowek" data-language-local-name="còrnic" 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%92%D0%B0%D1%82%D1%82-%D1%81%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Ватт-секунда - kirguís" lang="ky" hreflang="ky" data-title="Ватт-секунда" data-language-autonym="Кыргызча" data-language-local-name="kirguís" 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/Joulium" title="Joulium - llatí" lang="la" hreflang="la" data-title="Joulium" data-language-autonym="Latina" data-language-local-name="llatí" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Joule" title="Joule - limburguès" lang="li" hreflang="li" data-title="Joule" data-language-autonym="Limburgs" data-language-local-name="limburguès" 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/Joule" title="Joule - llombard" lang="lmo" hreflang="lmo" data-title="Joule" data-language-autonym="Lombard" data-language-local-name="llombard" 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/D%C5%BEaulis" title="Džaulis - lituà" lang="lt" hreflang="lt" data-title="Džaulis" data-language-autonym="Lietuvių" data-language-local-name="lituà" 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/D%C5%BEouls" title="Džouls - letó" lang="lv" hreflang="lv" data-title="Džouls" data-language-autonym="Latviešu" data-language-local-name="letó" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%8F%D1%83%D0%BB" title="Џул - macedoni" lang="mk" hreflang="mk" data-title="Џул" data-language-autonym="Македонски" data-language-local-name="macedoni" 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%9C%E0%B5%82%E0%B5%BE" title="ജൂൾ - malaiàlam" lang="ml" hreflang="ml" data-title="ജൂൾ" data-language-autonym="മലയാളം" data-language-local-name="malaiàlam" 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%96%D0%BE%D1%83%D0%BB%D1%8C" title="Жоуль - mongol" lang="mn" hreflang="mn" data-title="Жоуль" data-language-autonym="Монгол" data-language-local-name="mongol" 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%9C%E0%A5%8D%E0%A4%AF%E0%A5%82%E0%A4%B2" title="ज्यूल - marathi" lang="mr" hreflang="mr" data-title="ज्यूल" 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/Joule" title="Joule - malai" lang="ms" hreflang="ms" data-title="Joule" data-language-autonym="Bahasa Melayu" data-language-local-name="malai" 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%82%E1%80%BB%E1%80%AD%E1%80%AF%E1%80%B8" title="ဂျိုး - birmà" lang="my" hreflang="my" data-title="ဂျိုး" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="birmà" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Joule" title="Joule - neerlandès" lang="nl" hreflang="nl" data-title="Joule" data-language-autonym="Nederlands" data-language-local-name="neerlandès" 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/Joule" title="Joule - noruec nynorsk" lang="nn" hreflang="nn" data-title="Joule" data-language-autonym="Norsk nynorsk" data-language-local-name="noruec 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/Joule" title="Joule - noruec bokmål" lang="nb" hreflang="nb" data-title="Joule" data-language-autonym="Norsk bokmål" data-language-local-name="noruec bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Joule" title="Joule - occità" lang="oc" hreflang="oc" data-title="Joule" data-language-autonym="Occitan" data-language-local-name="occità" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%9C%E0%A9%82%E0%A8%B2" title="ਜੂਲ - panjabi" lang="pa" hreflang="pa" data-title="ਜੂਲ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="panjabi" 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/D%C5%BCul" title="Dżul - polonès" lang="pl" hreflang="pl" data-title="Dżul" data-language-autonym="Polski" data-language-local-name="polonès" 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/Joule" title="Joule - piemontès" lang="pms" hreflang="pms" data-title="Joule" data-language-autonym="Piemontèis" data-language-local-name="piemontès" 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%AC%D8%A7%D8%A4%D9%84" title="جاؤل - Western Punjabi" lang="pnb" hreflang="pnb" data-title="جاؤل" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Joule" title="Joule - portuguès" lang="pt" hreflang="pt" data-title="Joule" data-language-autonym="Português" data-language-local-name="portuguès" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Joule" title="Joule - romanès" lang="ro" hreflang="ro" data-title="Joule" data-language-autonym="Română" data-language-local-name="romanès" 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/Joule" title="Joule - Tarantino" lang="nap-x-tara" hreflang="nap-x-tara" data-title="Joule" 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%94%D0%B6%D0%BE%D1%83%D0%BB%D1%8C" title="Джоуль - rus" lang="ru" hreflang="ru" data-title="Джоуль" data-language-autonym="Русский" data-language-local-name="rus" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Joule" title="Joule - sard" lang="sc" hreflang="sc" data-title="Joule" data-language-autonym="Sardu" data-language-local-name="sard" class="interlanguage-link-target"><span>Sardu</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Joule" title="Joule - sicilià" lang="scn" hreflang="scn" data-title="Joule" data-language-autonym="Sicilianu" data-language-local-name="sicilià" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Joule" title="Joule - escocès" lang="sco" hreflang="sco" data-title="Joule" data-language-autonym="Scots" data-language-local-name="escocès" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/D%C5%BEul" title="Džul - serbocroat" lang="sh" hreflang="sh" data-title="Džul" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbocroat" 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%A2%E0%B7%96%E0%B6%BD%E0%B7%8A_(SI_%E0%B6%92%E0%B6%9A%E0%B6%9A%E0%B6%BA)" title="ජූල් (SI ඒකකය) - singalès" lang="si" hreflang="si" data-title="ජූල් (SI ඒකකය)" data-language-autonym="සිංහල" data-language-local-name="singalès" 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/Joule" title="Joule - Simple English" lang="en-simple" hreflang="en-simple" data-title="Joule" 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/Joule" title="Joule - eslovac" lang="sk" hreflang="sk" data-title="Joule" data-language-autonym="Slovenčina" data-language-local-name="eslovac" 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/D%C5%BEul" title="Džul - eslovè" lang="sl" hreflang="sl" data-title="Džul" data-language-autonym="Slovenščina" data-language-local-name="eslovè" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Xhauli" title="Xhauli - albanès" lang="sq" hreflang="sq" data-title="Xhauli" data-language-autonym="Shqip" data-language-local-name="albanès" 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%8F%D1%83%D0%BB" title="Џул - serbi" lang="sr" hreflang="sr" data-title="Џул" data-language-autonym="Српски / srpski" data-language-local-name="serbi" 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/Joule" title="Joule - sondanès" lang="su" hreflang="su" data-title="Joule" data-language-autonym="Sunda" data-language-local-name="sondanès" 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/Joule" title="Joule - suec" lang="sv" hreflang="sv" data-title="Joule" data-language-autonym="Svenska" data-language-local-name="suec" 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/Jouli" title="Jouli - suahili" lang="sw" hreflang="sw" data-title="Jouli" data-language-autonym="Kiswahili" data-language-local-name="suahili" 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/D%C5%BCul" title="Dżul - silesià" lang="szl" hreflang="szl" data-title="Dżul" data-language-autonym="Ślůnski" data-language-local-name="silesià" 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%9A%E0%AF%82%E0%AE%B2%E0%AF%8D_(%E0%AE%85%E0%AE%B2%E0%AE%95%E0%AF%81)" title="சூல் (அலகு) - tàmil" lang="ta" hreflang="ta" data-title="சூல் (அலகு)" data-language-autonym="தமிழ்" data-language-local-name="tàmil" 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%9C%E0%B1%8C%E0%B0%B2%E0%B1%8D" title="జౌల్ - telugu" lang="te" hreflang="te" data-title="జౌల్" data-language-autonym="తెలుగు" data-language-local-name="telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%88%E0%B8%B9%E0%B8%A5_(%E0%B8%AB%E0%B8%99%E0%B9%88%E0%B8%A7%E0%B8%A2)" title="จูล (หน่วย) - tai" lang="th" hreflang="th" data-title="จูล (หน่วย)" data-language-autonym="ไทย" data-language-local-name="tai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Joule" title="Joule - turc" lang="tr" hreflang="tr" data-title="Joule" data-language-autonym="Türkçe" data-language-local-name="turc" 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%94%D0%B6%D0%BE%D1%83%D0%BB%D1%8C" title="Джоуль - tàtar" lang="tt" hreflang="tt" data-title="Джоуль" data-language-autonym="Татарча / tatarça" data-language-local-name="tàtar" 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%94%D0%B6%D0%BE%D1%83%D0%BB%D1%8C" title="Джоуль - ucraïnès" lang="uk" hreflang="uk" data-title="Джоуль" data-language-autonym="Українська" data-language-local-name="ucraïnès" 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%AC%D9%88%D9%84" title="جول - urdú" lang="ur" hreflang="ur" data-title="جول" data-language-autonym="اردو" data-language-local-name="urdú" 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/Joul" title="Joul - uzbek" lang="uz" hreflang="uz" data-title="Joul" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbek" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vec mw-list-item"><a href="https://vec.wikipedia.org/wiki/Joule" title="Joule - vènet" lang="vec" hreflang="vec" data-title="Joule" data-language-autonym="Vèneto" data-language-local-name="vènet" class="interlanguage-link-target"><span>Vèneto</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Joule" title="Joule - vietnamita" lang="vi" hreflang="vi" data-title="Joule" 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-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Joule" title="Joule - waray" lang="war" hreflang="war" data-title="Joule" data-language-autonym="Winaray" data-language-local-name="waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E7%84%A6%E8%80%B3" title="焦耳 - xinès wu" lang="wuu" hreflang="wuu" data-title="焦耳" data-language-autonym="吴语" data-language-local-name="xinès wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%84%A6%E8%80%B3" title="焦耳 - xinès" lang="zh" hreflang="zh" data-title="焦耳" data-language-autonym="中文" data-language-local-name="xinès" 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%84%A6%E8%80%B3" title="焦耳 - xinès clàssic" lang="lzh" hreflang="lzh" data-title="焦耳" data-language-autonym="文言" data-language-local-name="xinès clàssic" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E7%84%A6%E8%80%B3" title="焦耳 - cantonès" lang="yue" hreflang="yue" data-title="焦耳" data-language-autonym="粵語" data-language-local-name="cantonès" 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/Q25269#sitelinks-wikipedia" title="Modifica enllaços interlingües" class="wbc-editpage">Modifica els enllaços</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="Espais de noms"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Joule" title="Vegeu el contingut de la pàgina [c]" accesskey="c"><span>Pàgina</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Discussi%C3%B3:Joule" rel="discussion" title="Discussió sobre el contingut d'aquesta pàgina [t]" accesskey="t"><span>Discussió</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Canvia la variant de llengua" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">català</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Vistes"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Joule"><span>Mostra</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Joule&action=edit" title="Modifica el codi font d'aquesta pàgina [e]" accesskey="e"><span>Modifica</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Joule&action=history" title="Versions antigues d'aquesta pàgina [h]" accesskey="h"><span>Mostra l'historial</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Eines de la pàgina"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Eines" > <label 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a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">amaga</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Més opcions" > <div class="vector-menu-heading"> Accions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Joule"><span>Mostra</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Joule&action=edit" title="Modifica el codi font d'aquesta pàgina [e]" accesskey="e"><span>Modifica</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Joule&action=history"><span>Mostra l'historial</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Especial:Enlla%C3%A7os/Joule" title="Una llista de totes les pàgines wiki que enllacen amb aquesta [j]" accesskey="j"><span>Què hi enllaça</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Especial:Seguiment/Joule" rel="nofollow" title="Canvis recents a pàgines enllaçades des d'aquesta pàgina [k]" accesskey="k"><span>Canvis relacionats</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Especial:P%C3%A0gines_especials" title="Llista totes les pàgines especials [q]" accesskey="q"><span>Pàgines especials</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Joule&oldid=34013777" title="Enllaç permanent a aquesta revisió de la pàgina"><span>Enllaç permanent</span></a></li><li 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class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Especial:Llibre&bookcmd=book_creator&referer=Joule"><span>Crea un llibre</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Especial:DownloadAsPdf&page=Joule&action=show-download-screen"><span>Baixa com a PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Joule&printable=yes" title="Versió per a impressió d'aquesta pàgina [p]" accesskey="p"><span>Versió per a impressora</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> En altres projectes </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Joule_(unit)" hreflang="en"><span>Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q25269" title="Enllaç a l'element del repositori de dades connectat [g]" accesskey="g"><span>Element a Wikidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Eines de la pàgina"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Aparença"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Aparença</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">amaga</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">De la Viquipèdia, l'enciclopèdia lliure</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="ca" dir="ltr"><table class="infobox" style="font-size:90%;width:25em"><caption style="font-weight:bold;color: #202122; background-color: #b0d1ad"><span style="float:left;"><span class="skin-invert" typeof="mw:File"><a href="/wiki/Fitxer:Noun_project_1842_flipped.svg" class="mw-file-description" title="Infotaula d'unitat"><img alt="Infotaula d'unitat" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/26/Noun_project_1842_flipped.svg/25px-Noun_project_1842_flipped.svg.png" decoding="async" width="25" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/26/Noun_project_1842_flipped.svg/38px-Noun_project_1842_flipped.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/26/Noun_project_1842_flipped.svg/50px-Noun_project_1842_flipped.svg.png 2x" data-file-width="100" data-file-height="100" /></a></span></span>joule</caption><tbody><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;">Tipus</th><td class="infobox-data"><a href="/wiki/Unitats_derivades_del_SI" title="Unitats derivades del SI">unitat derivada del SI</a>, <a href="/wiki/Unitat_d%27energia" title="Unitat d'energia">unitat d'energia</a> i <a href="https://www.wikidata.org/wiki/Special:EntityPage/Q68618328" class="extiw" title="d:Special:EntityPage/Q68618328">unitat derivada del SI amb nom especial</a> <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q25269?uselang=ca#P31" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;">Sistema d'unitats</th><td class="infobox-data"><a href="/wiki/Unitat_derivada_del_SI" class="mw-redirect" title="Unitat derivada del SI">Unitat derivada del SI</a></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;">Unitat de</th><td class="infobox-data"><a href="/wiki/Energia" title="Energia">Energia</a></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;">Símbol</th><td class="infobox-data">J</td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;"><a href="/wiki/Ep%C3%B2nim" title="Epònim">Epònim</a></th><td class="infobox-data"><a href="/wiki/James_Prescott_Joule" title="James Prescott Joule">James Prescott Joule</a></td></tr><tr><th colspan="2" class="infobox-header" style="text-align:center;color: #202122; background-color: #b0d1ad">Conversions d'unitats</th></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;"><span style="white-space:nowrap;">   </span><a href="/wiki/Unitats_base_del_SI" class="mw-redirect" title="Unitats base del SI">Unitats base del SI</a></th><td class="infobox-data"><span style="white-space:nowrap;">   </span>1 <a href="/wiki/Quilogram" title="Quilogram">kg</a>⋅<a href="/wiki/Metre" title="Metre">m</a>²⋅<a href="/wiki/Segon" title="Segon">s</a><sup>−2</sup></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;"><span style="white-space:nowrap;">   </span><a href="/wiki/Unitats_CGS" class="mw-redirect" title="Unitats CGS">Unitats CGS</a></th><td class="infobox-data"><span style="white-space:nowrap;">   </span><span class="nowrap"><span data-sort-value="7007100000000000000♠"></span>1<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>7</sup></span> <a href="/wiki/Erg_(unitat_cgs)" title="Erg (unitat cgs)">erg</a></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;"><span style="white-space:nowrap;">   </span><a href="/wiki/Quilowatt_hora" title="Quilowatt hora">quilowatts hora</a></th><td class="infobox-data"><span style="white-space:nowrap;">   </span><span class="nowrap"><span data-sort-value="7000100079999999999♠"></span>2,78<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−7</sup> kW·h</span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;"><span style="white-space:nowrap;">   </span><a href="/wiki/Quilocaloria" class="mw-redirect" title="Quilocaloria">quilocalories</a> (<a href="/wiki/Termoqu%C3%ADmica" title="Termoquímica">termoquímiques</a>)</th><td class="infobox-data"><span style="white-space:nowrap;">   </span><span class="nowrap"><span data-sort-value="6996239000000000000♠"></span>2,390<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−4</sup> kcal<sub>te</sub></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;"><span style="white-space:nowrap;">   </span><a href="/wiki/BTU" title="BTU">BTU</a></th><td class="infobox-data"><span style="white-space:nowrap;">   </span><span class="nowrap"><span data-sort-value="7000100019294828376♠"></span>9,48<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−4</sup> BTU</span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;"><span style="white-space:nowrap;">   </span><a href="/wiki/Electr%C3%B3-volt" title="Electró-volt">electró-volts</a></th><td class="infobox-data"><span style="white-space:nowrap;">   </span><span class="nowrap"><span data-sort-value="6999999758127888000♠"></span>6,24<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>18</sup> eV</span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;">A unitats del SI</th><td class="infobox-data">1 J <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q25269?uselang=ca#P2370" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:Joule_James_sitting.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Joule_James_sitting.jpg/220px-Joule_James_sitting.jpg" decoding="async" width="220" height="291" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Joule_James_sitting.jpg/330px-Joule_James_sitting.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Joule_James_sitting.jpg/440px-Joule_James_sitting.jpg 2x" data-file-width="1907" data-file-height="2524" /></a><figcaption>Fotografia de <a href="/wiki/James_Prescott_Joule" title="James Prescott Joule">James Prescott Joule</a>.</figcaption></figure> <p>El <b>joule</b> (símbol <b>J</b>) és la unitat d'<a href="/wiki/Energia" title="Energia">energia</a>, <a href="/wiki/Calor" title="Calor">quantitat de calor</a> i <a href="/wiki/Treball_f%C3%ADsic" class="mw-redirect" title="Treball físic">treball</a> en el <a href="/wiki/Sistema_Internacional_d%27Unitats" title="Sistema Internacional d'Unitats">Sistema Internacional d'Unitats</a>. Va ser anomenada així en honor del <a href="/wiki/F%C3%ADsica" title="Física">físic</a> <a href="/wiki/Anglaterra" title="Anglaterra">anglès</a> <a href="/wiki/James_Prescott_Joule" title="James Prescott Joule">James Prescott Joule</a> (<a href="/wiki/1818" title="1818">1818</a> – <a href="/wiki/1889" title="1889">1889</a>). Es tracta d'una <a href="/wiki/Unitats_derivades_del_SI" title="Unitats derivades del SI">unitat derivada</a> que es defineix com el <a href="/wiki/Treball_f%C3%ADsic" class="mw-redirect" title="Treball físic">treball</a> que fa una <a href="/wiki/For%C3%A7a" title="Força">força</a> d'un <a href="/wiki/Newton_(unitat)" title="Newton (unitat)">newton</a> quan el punt on s'aplica es desplaça un <a href="/wiki/Metre" title="Metre">metre</a> en la direcció de la força. En termes d'unitats bàsiques del SI s'expressa en <a href="/wiki/Quilogram" title="Quilogram">quilogram</a> per <a href="/wiki/Metre_quadrat" title="Metre quadrat">metre quadrat</a> dividit entre <a href="/wiki/Segon" title="Segon">segon</a> al quadrat: </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \,1\,\mathrm {J} =1\,\mathrm {kg} \cdot \mathrm {m} ^{2}\cdot \mathrm {s} ^{-2}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mspace width="thinmathspace" /> <mn>1</mn> <mspace width="thinmathspace" /> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">J</mi> </mrow> <mo>=</mo> <mn>1</mn> <mspace width="thinmathspace" /> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">k</mi> <mi mathvariant="normal">g</mi> </mrow> <mo>⋅</mo> <msup> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">m</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mo>⋅</mo> <msup> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">s</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mo>−</mo> <mn>2</mn> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \,1\,\mathrm {J} =1\,\mathrm {kg} \cdot \mathrm {m} ^{2}\cdot \mathrm {s} ^{-2}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/90f78492c69355602b0b57224e462eb746135fc6" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:19.767ex; height:3.009ex;" alt="{\displaystyle \,1\,\mathrm {J} =1\,\mathrm {kg} \cdot \mathrm {m} ^{2}\cdot \mathrm {s} ^{-2}}"></span></dd></dl> <p>Seguint les normes del Sistema Internacional d'Unitats publicades per l'<a href="/wiki/Oficina_Internacional_de_Pesos_i_Mesures" title="Oficina Internacional de Pesos i Mesures">Oficina Internacional de Pesos i Mesures</a> el nom de les unitats s'ha d'escriure en <a href="/wiki/Min%C3%BAscula" title="Minúscula">minúscula</a> (joule) i el símbol amb la lletra <a href="/wiki/Maj%C3%BAscula" title="Majúscula">majúscula</a> J atès que deriva d'un nom propi.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-CGPM9_2-0" class="reference"><a href="#cite_note-CGPM9-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Definició"><span id="Definici.C3.B3"></span>Definició</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Joule&action=edit&section=1" title="Modifica la secció: Definició"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Un joule es defineix com la quantitat de <a href="/wiki/Treball_f%C3%ADsic" class="mw-redirect" title="Treball físic">treball físic</a> que faria una força d'un newton per a moure un objecte a una distància d'un metre en la direcció de la força aplicada. Però, atès que el concepte d'energia s'utilitza en diferents àmbits de la <a href="/wiki/F%C3%ADsica" title="Física">física</a>, hi ha d'altres definicions pràctiques utilitzant altres unitats derivades, així un joule també és: </p> <ul><li>El treball necessari per moure una <a href="/wiki/C%C3%A0rrega_el%C3%A8ctrica" title="Càrrega elèctrica">càrrega elèctrica</a> d'un <a href="/wiki/Coulomb" title="Coulomb">coulomb</a> al llarg d'una <a href="/wiki/Difer%C3%A8ncia_de_potencial" title="Diferència de potencial">diferència de potencial</a> d'un <a href="/wiki/Volt" title="Volt">volt</a>. Aquesta relació pot ser utilitzada per a definir el volt.</li></ul> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\rm {1\,J=1\,V\cdot C}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> <mspace width="thinmathspace" /> <mi mathvariant="normal">J</mi> <mo>=</mo> <mn>1</mn> <mspace width="thinmathspace" /> <mi mathvariant="normal">V</mi> <mo>⋅</mo> <mi mathvariant="normal">C</mi> </mrow> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\rm {1\,J=1\,V\cdot C}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/e930acd97e39e0a108c7acc0958398d04d776fa6" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:12.493ex; height:2.176ex;" alt="{\displaystyle {\rm {1\,J=1\,V\cdot C}}}"></span></dd></dl> <ul><li>El treball fet per un <a href="/wiki/Circuit_el%C3%A8ctric" title="Circuit elèctric">circuit elèctric</a> per fer circular un <a href="/wiki/Corrent_el%C3%A8ctric" title="Corrent elèctric">corrent elèctric</a> d'un <a href="/wiki/Ampere" title="Ampere">ampere</a> a través d'una <a href="/wiki/Resist%C3%A8ncia_el%C3%A8ctrica_(component)" title="Resistència elèctrica (component)">resistència elèctrica</a> d'un <a href="/wiki/Ohm_(unitat)" title="Ohm (unitat)">ohm</a> durant un segon.</li></ul> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\rm {1\,J=1\,\Omega \cdot A^{2}\cdot s}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> <mspace width="thinmathspace" /> <mi mathvariant="normal">J</mi> <mo>=</mo> <mn>1</mn> <mspace width="thinmathspace" /> <mi mathvariant="normal">Ω</mi> <mo>⋅</mo> <msup> <mi mathvariant="normal">A</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mo>⋅</mo> <mi mathvariant="normal">s</mi> </mrow> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\rm {1\,J=1\,\Omega \cdot A^{2}\cdot s}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/c65bf290e467af0732285e41d846d13db23dfd24" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:16.142ex; height:2.676ex;" alt="{\displaystyle {\rm {1\,J=1\,\Omega \cdot A^{2}\cdot s}}}"></span></dd></dl> <ul><li>El treball necessari per produir la <a href="/wiki/Pot%C3%A8ncia_f%C3%ADsica" class="mw-redirect" title="Potència física">potència</a> d'un <a href="/wiki/Watt" title="Watt">watt</a> durant un <a href="/wiki/Segon" title="Segon">segon</a>. Aquesta relació pot ser utilitzada per a definir el watt.</li></ul> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\rm {1\,J=1\,W\cdot s}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> <mspace width="thinmathspace" /> <mi mathvariant="normal">J</mi> <mo>=</mo> <mn>1</mn> <mspace width="thinmathspace" /> <mi mathvariant="normal">W</mi> <mo>⋅</mo> <mi mathvariant="normal">s</mi> </mrow> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\rm {1\,J=1\,W\cdot s}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/ffb50af4103c03983bceb24cdeedc94dcddc301f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:12.377ex; height:2.176ex;" alt="{\displaystyle {\rm {1\,J=1\,W\cdot s}}}"></span></dd></dl> <p>El <a href="/wiki/Quilowatt-hora" class="mw-redirect" title="Quilowatt-hora">quilowatt-hora</a> és una altra unitat d'energia, basada en el watt i l'<a href="/wiki/Hora" title="Hora">hora</a>, que tot i no formar part del SI s'utilitza habitualment per a l'energia elèctrica, el seu preu s'acostuma a expressar en <a href="/wiki/Euro" title="Euro">€</a> per kWh. Un quilowatt-hora serien 3.600.000 joules o 3,6 megajoules. </p> <div class="mw-heading mw-heading2"><h2 id="Història"><span id="Hist.C3.B2ria"></span>Història</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Joule&action=edit&section=2" title="Modifica la secció: Història"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>El <a href="/wiki/1889" title="1889">1889</a> la <i>British Association for the Advancement of Science</i> va suggerir el nom de joule per a la unitat d'energia, el nom va ser adoptat al segon <i>Congrès international des électriciens</i> celebrat a <a href="/wiki/Par%C3%ADs" title="París">París</a> el mateix any 1889 en el marc de l'<a href="/wiki/Exposici%C3%B3_Universal" class="mw-redirect" title="Exposició Universal">Exposició Universal</a>.<sup id="cite_ref-Naughtin_3-0" class="reference"><a href="#cite_note-Naughtin-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>El <a href="/wiki/1948" title="1948">1948</a> a la 9a reunió de la <a href="/wiki/Confer%C3%A8ncia_General_de_Pesos_i_Mesures" title="Conferència General de Pesos i Mesures">CGPM</a> que es va fer a París, es va consagrar el joule com a unitat d'energia, tanmateix la resolució era una mica ambigua i només deia <i>El joule és la unitat de la quantitat de calor</i>,<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> sembla que la Conferència va trobar alguns problemes amb els defensors de la <a href="/wiki/Caloria" title="Caloria">caloria</a>.<sup id="cite_ref-Naughtin_3-1" class="reference"><a href="#cite_note-Naughtin-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Una altra mostra d'ambigüitat és que a la mateixa 9a reunió de la CGPM es va adoptar una resolució<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> referent a l'escriptura dels noms i símbols de les unitats on encara apareixia l'<a href="/wiki/Erg_(unitat_cgs)" title="Erg (unitat cgs)">erg</a>, no seria fins al 1960, a l'11a reunió de la CGPM, quan es va definir el Sistema Internacional d'Unitats, que el joule quedaria definit clarament com l'única unitat d'energia, treball i quantitat de calor.<sup id="cite_ref-CGPM9_2-1" class="reference"><a href="#cite_note-CGPM9-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>En el camp de les <a href="/wiki/Radiaci%C3%B3_ionitzant" title="Radiació ionitzant">radiacions ionitzants</a> les unitats de mesura per a la <a href="/wiki/Dosi_absorbida" title="Dosi absorbida">dosi absorbida</a> i la <a href="/wiki/Dosi_equivalent" title="Dosi equivalent">dosi equivalent</a> de radiació són les mateixes, el <i>joule per quilogram</i>, però per evitar confusions s'utilitzen unitats amb un nom específic, el <a href="/wiki/Gray_(unitat)" title="Gray (unitat)">gray</a> i el <a href="/wiki/Sievert" title="Sievert">sievert</a> respectivament.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p><p>El <a href="/wiki/1971" title="1971">1971</a> la <a href="/wiki/Uni%C3%B3_Europea" title="Unió Europea">Unió Europea</a> va publicar la <a href="/wiki/Directiva_de_la_Uni%C3%B3_Europea" class="mw-redirect" title="Directiva de la Unió Europea">directiva</a> 71/354/EEC<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> instant els estats membres a utilitzar les unitats del Sistema Internacional, amb joule com la unitat d'energia tot i que permetia la utilització de la caloria fins al <a href="/wiki/1977" title="1977">1977</a> i de l'<a href="/wiki/Erg_(unitat_cgs)" title="Erg (unitat cgs)">erg</a> fins al <a href="/wiki/1979" title="1979">1979</a>. La directiva 80/181/EEC<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> del <a href="/wiki/1979" title="1979">1979</a> va confirmar la utilització del SI i el joule però va permetre la utilització d'algunes altres unitats, com la caloria, sempre que el seu ús fos suplementari a la unitat corresponent del SI i temporalment fins a finals del <a href="/wiki/1989" title="1989">1989</a>. Successives directives van anar endarrerint la data fins al 1999 (89/617/EEC<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> del <a href="/wiki/27_de_novembre" title="27 de novembre">27 de novembre</a> del <a href="/wiki/1989" title="1989">1989</a>), i el 2009 (1999/103/EC<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> del <a href="/wiki/24_de_gener" title="24 de gener">24 de gener</a> del <a href="/wiki/2000" title="2000">2000</a>), finalment la directiva 2009/3/EC<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> de l'<a href="/wiki/11_de_mar%C3%A7" title="11 de març">11 de març</a> del <a href="/wiki/2009" title="2009">2009</a> permet la utilització indefinida d'indicacions suplementàries d'algunes unitats. </p> <div class="mw-heading mw-heading2"><h2 id="Múltiples_del_joule"><span id="M.C3.BAltiples_del_joule"></span>Múltiples del joule</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Joule&action=edit&section=3" title="Modifica la secció: Múltiples del joule"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable" style="text-align:center; margin:0 auto 0 auto;"> <caption>Múltiples del joule (J) </caption> <tbody><tr style="color:#fff;"> <th colspan="3" style="background:#3e3e3e;">Submúltiples </th> <th> </th> <th colspan="3" style="background:#3e3e3e;">Múltiples </th></tr> <tr> <th style="background:#d4d4d4;">Valor </th> <th style="background:#d4d4d4;">Símbol </th> <th style="background:#d4d4d4;">Nom </th> <th> </th> <th style="background:#d4d4d4;">Valor </th> <th style="background:#d4d4d4;">Símbol </th> <th style="background:#d4d4d4;">Nom </th></tr> <tr> <td>10<sup>–1</sup> J</td> <td style="text-align:center;">dJ </td> <td style="text-align:center;">decijoule</td> <td rowspan="10"></td> <td>10¹ J </td> <td style="text-align:center;">daJ</td> <td style="text-align:center;">decajoule </td></tr> <tr> <td>10<sup>–2</sup> J</td> <td style="text-align:center;">cJ </td> <td style="text-align:center;">centijoule </td> <td>10² J</td> <td style="text-align:center;">hJ </td> <td style="text-align:center;">hectojoule </td></tr> <tr> <td>10<sup>–3</sup> J</td> <td style="text-align:center;"><b>mJ</b> </td> <td style="text-align:center;"><b>mil·lijoule</b> </td> <td>10<sup>3</sup> J</td> <td style="text-align:center;"><b>kJ</b> </td> <td style="text-align:center;"><b>kilojoule</b> </td></tr> <tr> <td>10<sup>–6</sup> J</td> <td style="text-align:center;"><b>µJ</b> </td> <td style="text-align:center;"><b>microjoule</b> </td> <td>10⁶ J</td> <td style="text-align:center;"><b>MJ</b> </td> <td style="text-align:center;"><b>megajoule</b> </td></tr> <tr> <td>10<sup>–9</sup> J</td> <td style="text-align:center;"><b>nJ</b> </td> <td style="text-align:center;"><b>nanojoule</b> </td> <td>10⁹ J</td> <td style="text-align:center;"><b>GJ</b> </td> <td style="text-align:center;"><b>gigajoule</b> </td></tr> <tr> <td>10<sup>–12</sup> J</td> <td style="text-align:center;"><b>pJ</b> </td> <td style="text-align:center;"><b>picojoule</b> </td> <td>10<sup>12</sup> J</td> <td style="text-align:center;"><b>TJ</b> </td> <td style="text-align:center;"><b>terajoule</b> </td></tr> <tr> <td>10<sup>–15</sup> J</td> <td style="text-align:center;">fJ </td> <td style="text-align:center;">femtojoule </td> <td>10<sup>15</sup> J</td> <td style="text-align:center;">PJ </td> <td style="text-align:center;">petajoule </td></tr> <tr> <td>10<sup>–18</sup> J</td> <td style="text-align:center;">aJ </td> <td style="text-align:center;">attojoule </td> <td>10<sup>18</sup> J</td> <td style="text-align:center;">EJ </td> <td style="text-align:center;">exajoule </td></tr> <tr> <td>10<sup>–21</sup> J</td> <td style="text-align:center;">zJ </td> <td style="text-align:center;">zeptojoule </td> <td>10<sup>21</sup> J</td> <td style="text-align:center;">ZJ </td> <td style="text-align:center;">zettajoule </td></tr> <tr> <td>10<sup>–24</sup> J</td> <td style="text-align:center;">yJ </td> <td style="text-align:center;">yoctojoule </td> <td>10<sup>24</sup> J</td> <td style="text-align:center;">YJ </td> <td style="text-align:center;">yottajoule </td></tr> <tr> <td colspan="7">En negreta els múltiples més utilitzats </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Ordre_de_magnitud">Ordre de magnitud</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Joule&action=edit&section=4" title="Modifica la secció: Ordre de magnitud"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>El joule és una unitat d'energia molt petita per la vida corrent. Aproximadament, un joule és la quantitat d'energia necessària per aixecar un quilogram a una alçada de deu centímetres a la superfície terrestre. Una puntada de peu d'un esportista pot tenir una <a href="/wiki/Energia" title="Energia">energia</a> d'uns 200 J; una bombeta de baix consum de 20 watts durant vuit hores gasta uns 500.000 J; i el consum elèctric d'una família mitjana durant un mes pot ser d'uns 1.000.000.000 (uns 278 kWh). Per aquest motiu, és més habitual utilitzar la unitat kWh (quilowatt hora) en lloc del MJ (megajoule) o el GJ (gigajoule), com caldria fer-ho. </p> <div class="mw-heading mw-heading2"><h2 id="Exemples_pràctics"><span id="Exemples_pr.C3.A0ctics"></span>Exemples pràctics</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Joule&action=edit&section=5" title="Modifica la secció: Exemples pràctics"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A la vida diària podem trobar aquests exemples quantificats en joules: </p> <ul><li>1 joule : <ul><li>energia necessària per aixecar un metre un petit objecte de 100 <a href="/wiki/Gram" title="Gram">grams</a> a la superfície de la <a href="/wiki/Terra" title="Terra">Terra</a>.</li> <li>energia necessària per elevar la temperatura d'un gram d'aire sec (un <a href="/wiki/Litre" title="Litre">litre</a>) un <a href="/wiki/Grau_Celsius" title="Grau Celsius">grau Celsius</a>.</li></ul></li></ul> <ul><li>1000 joules <ul><li>quantitat de calor dissipada en 10 <a href="/wiki/Segon" title="Segon">segons</a> per una persona en repòs.</li> <li>energia que necessita un nen (30 kg) per pujar un pis (poc més de tres <a href="/wiki/Metre" title="Metre">metres</a>).</li></ul></li></ul> <ul><li>1 megajoule (un milió de joules) <ul><li>calor necessària per portar a ebullició 3 litres d'<a href="/wiki/Aigua" title="Aigua">aigua</a>.</li> <li>un quart d'hora d'escalfament produït per un radiador de 1000 W.</li></ul></li></ul> <p>Com es pot observar, el joule és una unitat massa petita per a ser utilitzada habitualment. </p> <div class="mw-heading mw-heading2"><h2 id="Conversions">Conversions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Joule&action=edit&section=6" title="Modifica la secció: Conversions"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>1 joule és igual a: </p> <ul><li>1 <a href="/wiki/Newton_(unitat)" title="Newton (unitat)">N·</a><a href="/wiki/Metre" title="Metre">m</a> (<a href="/wiki/Newton_(unitat)" title="Newton (unitat)">newton</a> <a href="/wiki/Metre" title="Metre">metre</a>)</li> <li>1 <a href="/wiki/Watt" title="Watt">W·</a><a href="/wiki/Segon" title="Segon">s</a> (<a href="/wiki/Watt" title="Watt">watt</a> <a href="/wiki/Segon" title="Segon">segon</a>)</li> <li>2,7778 <span style="margin:0 .15em 0 .25em">×</span>10<sup>−4</sup> watt hora</li> <li>0,000 000 278 <a href="/wiki/Quilowatt-hora" class="mw-redirect" title="Quilowatt-hora">quilowatt-hora</a></li> <li>6,24150974 × 10<sup>18</sup> eV (<a href="/wiki/Electr%C3%B3_volt" class="mw-redirect" title="Electró volt">electró volts</a>)</li> <li>0,239 <a href="/wiki/Caloria" title="Caloria">calories</a></li> <li>1 <a href="/wiki/Pascal_(unitat)" title="Pascal (unitat)">pascal</a>-<a href="/wiki/Metre_c%C3%BAbic" title="Metre cúbic">metre cúbic</a>.</li></ul> <p>Unitats definides en termes del joule: </p> <ul><li>1 watt hora = 3600 J</li> <li>1 kilowatt hora = 3,6 x 10⁶ J (o 3,6 MJ)</li> <li>1 tona TNT = 4,184 GJ</li></ul> <div class="mw-heading mw-heading2"><h2 id="Newton-metre_i_parell">Newton-metre i parell</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Joule&action=edit&section=7" title="Modifica la secció: Newton-metre i parell"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>En <a href="/wiki/Mec%C3%A0nica" title="Mecànica">mecànica</a>, el concepte de <a href="/wiki/For%C3%A7a" title="Força">força</a> (en alguna direcció) té un anàleg proper en el concepte de <a href="/wiki/Parell" class="mw-redirect" title="Parell">parell</a> (aproximadament un angle): </p> <table class="wikitable"> <tbody><tr> <th>Lineal</th> <th>Angular </th></tr> <tr> <td>Força</td> <td>Parell </td></tr> <tr> <td><a href="/wiki/Massa" title="Massa">Massa</a></td> <td><a href="/wiki/Moment_d%27in%C3%A8rcia" title="Moment d'inèrcia">Moment d'inèrcia</a> </td></tr> <tr> <td>Desplaçament </td> <td>Angle </td></tr></tbody></table> <p>El resultat d'aquesta similitud és que la unitat del SI per al parell és el <a href="/w/index.php?title=Newton-metre&action=edit&redlink=1" class="new" title="Newton-metre (encara no existeix)">newton-metre</a>, que funciona de manera <a href="/w/index.php?title=%C3%80lgebraica&action=edit&redlink=1" class="new" title="Àlgebraica (encara no existeix)">àlgebraica</a> per tenir les mateixes <a href="/wiki/An%C3%A0lisi_dimensional" title="Anàlisi dimensional">dimensions</a> que el joule, però no són intercanviables. La <a href="/w/index.php?title=Confer%C3%A8ncia_General_de_Peses_i_Mesures&action=edit&redlink=1" class="new" title="Conferència General de Peses i Mesures (encara no existeix)">Conferència General de Peses i Mesures</a> ha donat a la unitat d'<a href="/wiki/Energia" title="Energia">energia</a> el nom de <i>joule</i>, però no li ha donat cap nom especial a la unitat de parell, per tant és simplement el newton-metre (N⋅m) – un nom compost derivat de les seves parts constituents.<sup id="cite_ref-BIPM2_15-0" class="reference"><a href="#cite_note-BIPM2-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> L'ús de newton-metres per al parell i els joules per a l'energia és útil per evitar malentesos i comunicacions incorrectes.<sup id="cite_ref-BIPM2_15-1" class="reference"><a href="#cite_note-BIPM2-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </p><p>La distinció es pot veure també en el fet que l'energia és una quantitat <a href="/wiki/Escalar_(f%C3%ADsica)" title="Escalar (física)">escalar</a>: el <a href="/w/index.php?title=Producte_puntual&action=edit&redlink=1" class="new" title="Producte puntual (encara no existeix)">producte puntual</a> d'un <a href="/w/index.php?title=Vector_euclidi%C3%A0&action=edit&redlink=1" class="new" title="Vector euclidià (encara no existeix)">vector</a> de força i un vector de desplaçament. Per contra, el parell és un vector: el <a href="/w/index.php?title=Producte_creuat&action=edit&redlink=1" class="new" title="Producte creuat (encara no existeix)">producte creuat</a> d'un vector força i un vector distància. El parell i l'energia estan relacionats entre si per l'equació <span class="mwe-math-element"><span class="mwe-math-mathml-display mwe-math-mathml-a11y" style="display: none;"><math display="block" xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle E=\tau \theta \,,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>E</mi> <mo>=</mo> <mi>τ</mi> <mi>θ</mi> <mspace width="thinmathspace" /> <mo>,</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle E=\tau \theta \,,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/5c17780b00a1e8e7e1706205dd69357162e7ce29" class="mwe-math-fallback-image-display mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:8.2ex; height:2.509ex;" alt="{\displaystyle E=\tau \theta \,,}"></span> </p><p>on <i>E</i> és energia, <i>τ</i> és (la <a href="/wiki/Magnitud_(matem%C3%A0tiques)#espai_vectorial_euclidià" title="Magnitud (matemàtiques)">magnitud vectorial</a> de) parell, i <i>θ</i> és l'angle escombrat (en <a href="/wiki/Radians" class="mw-redirect" title="Radians">radians</a>). Com que els angles plans són adimensionals, es dedueix que el parell i l'energia tenen les mateixes dimensions. </p> <div class="mw-heading mw-heading2"><h2 id="Watt-segon">Watt-segon</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Joule&action=edit&section=8" title="Modifica la secció: Watt-segon"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Un <b>watt-segon</b> (símbol <b>W s</b> o <b>W⋅s</b>) és una <a href="/wiki/Unitat_derivada" class="mw-redirect" title="Unitat derivada">unitat derivada</a> d'<a href="/wiki/Energia" title="Energia">energia</a> equivalent al joule.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> El watt-segon és l'energia equivalent a la potència d'un <a href="/wiki/Watt" title="Watt">watt</a> sostingut durant un <a href="/wiki/Segon" title="Segon">segon</a>. Tot i que el watt-segon és equivalent al joule tant en unitats com en significat, hi ha alguns contextos en què s'utilitza el terme "watt-segon" en comptes de "joule", com ara en la qualificació de <a href="/wiki/Flaix" title="Flaix">unitats de flaix electrònic</a>.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Referències"><span id="Refer.C3.A8ncies"></span>Referències</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Joule&action=edit&section=9" title="Modifica la secció: Referències"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist {{#if: | references-column-count references-column-count-{{{col}}}" style="list-style-type: decimal;"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r33711417">.mw-parser-output .languageicon{font-size:0.95em;color:#555;background-color:inherit}@media screen{html.skin-theme-clientpref-night .mw-parser-output .languageicon{background-color:inherit;color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .languageicon{background-color:inherit;color:white}}</style><span class="languageicon" title="En anglès">(anglès)</span> <a rel="nofollow" class="external text" href="http://www.bipm.org/utils/common/pdf/si_brochure_8_en.pdf">El Sistema Internacional d'Unitats</a> PDF. Publicació de l'<a href="/wiki/Oficina_Internacional_de_Pesos_i_Mesures" title="Oficina Internacional de Pesos i Mesures">Oficina Internacional de Pesos i Mesures</a>. Pàgina 131, apartat <i>5.2 Unit names</i></span> </li> <li id="cite_note-CGPM9-2"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-CGPM9_2-0">2,0</a></sup> <sup><a href="#cite_ref-CGPM9_2-1">2,1</a></sup></span> <span class="reference-text"> <span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="http://www.bipm.org/en/CGPM/db/11/12/">Resolució número 12 de la 11<sup>a</sup> reunió de la CGPM</a>» (en anglès). «La <a href="/wiki/Confer%C3%A8ncia_General_de_Pesos_i_Mesures" title="Conferència General de Pesos i Mesures">Conferència General de Pesos i Mesures</a> celebrada a <a href="/wiki/Par%C3%ADs" title="París">París</a> el 1960 va definir el Sistema Internacional d'Unitats i va consagrar el joule com la unitat d'energia, treball i quantitat de calor.»</span></span> </li> <li id="cite_note-Naughtin-3"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-Naughtin_3-0">3,0</a></sup> <sup><a href="#cite_ref-Naughtin_3-1">3,1</a></sup></span> <span class="reference-text"><span class="citation" style="font-style:normal" id="CITEREFNaughtin2006"><span style="font-variant: small-caps;">Naughtin</span>, Pat «<a rel="nofollow" class="external text" href="http://www.aph.gov.au/senate/committee/rrat_ctte/completed_inquiries/2004-07/oil_supply/submissions/sub05.pdf.">Inquiry into Australia's future oil supply and alternative transport fuels</a>» (pdf) (en anglès). <i>Chronology of the joule</i>, 2006, pàg. 3.</span><sup class="noprint Inline-Template"><span title="" style="white-space: nowrap;"><i>[<a href="/wiki/Viquip%C3%A8dia:Enlla%C3%A7os_externs#Manteniment_d'enllaços_externs" title="Viquipèdia:Enllaços externs">Enllaç no actiu</a>]</i></span></sup></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r33711417"><span class="languageicon" title="En anglès">(anglès)</span> <a rel="nofollow" class="external text" href="http://www.sizes.com/units/joule.htm">Definició del joule a lloc web <i>Sizes</i></a> <i>The joule was adopted in 1889 by the International Electrical Congress. When the CGPM first defined SI, in 1960, it included the joule as one of the derived units.</i></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r33711417"><span class="languageicon" title="En francès">(francès)</span> <a rel="nofollow" class="external text" href="http://www.bipm.org/jsp/fr/ViewCGPMResolution.jsp?CGPM=9&RES=3">El joule com a unitat de la quantitat de calor</a> Resolució 3 de la de la 9<sup>a</sup> reunió de la <a href="/wiki/Confer%C3%A8ncia_General_de_Pesos_i_Mesures" title="Conferència General de Pesos i Mesures">CGPM</a> del <a href="/wiki/1948" title="1948">1948</a>.</span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r33711417"><span class="languageicon" title="En francès">(francès)</span> [<a rel="nofollow" class="external free" href="http://www.bipm.org/fr/CGPM/db/9/7/">http://www.bipm.org/fr/CGPM/db/9/7/</a> Resolució 7a de la 9a reunió de la CGPM del 1948.</span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><a href="#cite_ref-7">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.bipm.org/fr/si/si_brochure/chapter2/2-2/2-2-2.html">BIPM. Unitats amb un nom especial</a> Vegeu el darrer paràgraf.</span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><a href="#cite_ref-8">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.bipm.org/jsp/fr/ViewCGPMResolution.jsp?CGPM=16&RES=5">Resolució número 5 de la 16a reunió de la CGPM, 1979, adoptant el sievert</a></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><a href="#cite_ref-9">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.bipm.org/en/CGPM/db/15/9/">Resolució número 9 de la 15a reunió de la CGPM, 1975, adoptant el gray.</a></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><a href="#cite_ref-10">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="http://eur-lex.europa.eu/Notice.do?mode=dbl&lang=en&lng1=en,nl&lng2=da,de,el,en,es,fr,it,nl,pt,&val=22924:cs&page=1&hwords=">Directiva del 18 d'octubre del 1971 sobre les lleis dels estats membres relatives a les unitats de mesura, (71/354/EEC)</a>». [Consulta: 2 agost 2009].</span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><a href="#cite_ref-11">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31980L0181:EN:NOT">Directiva 80/181/EEC del 20 de desembre del 1979</a>». [Consulta: 2 agost 2009].</span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><a href="#cite_ref-12">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31989L0617:EN:HTML">Directiva 89/617/EEC del 27 de novembre del 1989</a>». [Consulta: 2 agost 2009].</span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><a href="#cite_ref-13">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31999L0103:EN:HTML">Directiva 1999/103/EC del Parlament Europeu i el Consell del 24 de gener del 2000.</a>». [Consulta: 2 agost 2009].</span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><a href="#cite_ref-14">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2009:114:SOM:en:HTML">Directiva 2009/3/EC del Parlament Europeu i el Consell de l'11 de març del 2009</a>». [Consulta: 2 agost 2009].</span></span> </li> <li id="cite_note-BIPM2-15"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-BIPM2_15-0">15,0</a></sup> <sup><a href="#cite_ref-BIPM2_15-1">15,1</a></sup></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="https://web.archive.org/web/20090628084157/http://www.bipm.org/en/si/si_brochure/chapter2/2-2/2-2-2.html">Units with special names and symbols; units that incorporate special names and symbols</a>».  <a href="/w/index.php?title=International_Bureau_of_Weights_and_Measures&action=edit&redlink=1" class="new" title="International Bureau of Weights and Measures (encara no existeix)">International Bureau of Weights and Measures</a>. Arxivat de l'<a rel="nofollow" class="external text" href="http://www.bipm.org/en/si/si_brochure/chapter2/2-2/2-2-2.html">original</a> el 28 juny 2009. [Consulta: 18 març 2015]. «A derived unit can often be expressed in different ways by combining base units with derived units having special names. Joule, for example, may formally be written newton metre, or kilogram metre squared per second squared. This, however, is an algebraic freedom to be governed by common sense physical considerations; in a given situation some forms may be more helpful than others. In practice, with certain quantities, preference is given to the use of certain special unit names, or combinations of unit names, to facilitate the distinction between different quantities having the same dimension.»</span></span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><a href="#cite_ref-16">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal"><a href="/wiki/Oficina_Internacional_de_Pesos_i_Mesures" title="Oficina Internacional de Pesos i Mesures">Oficina Internacional de Pesos i Mesures</a>. <a rel="nofollow" class="external text" href="http://www.bipm.org/utils/common/pdf/si_brochure_8_en.pdf"><i>The International System of Units (SI)</i></a> (en anglès). 8a ed., 2006. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/92-822-2213-6" title="Especial:Fonts bibliogràfiques/92-822-2213-6">ISBN 92-822-2213-6</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+International+System+of+Units+%28SI%29&rft.au=Oficina+Internacional+de+Pesos+i+Mesures&rft.date=2006&rft.edition=8a+ed.&rft.isbn=92-822-2213-6&rft_id=http%3A%2F%2Fwww.bipm.org%2Futils%2Fcommon%2Fpdf%2Fsi_brochure_8_en.pdf"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-17"><span class="mw-cite-backlink"><a href="#cite_ref-17">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="https://web.archive.org/web/20170602221233/http://www.imaginginfo.com/print/Studio-Photography/What-Is-A-Watt-Second/3$1043">What Is A Watt Second?</a>». Arxivat de l'<a rel="nofollow" class="external text" href="http://www.imaginginfo.com/print/Studio-Photography/What-Is-A-Watt-Second/3$1043">original</a> el 2017-06-02. [Consulta: 8 maig 2023].</span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Enllaços_externs"><span id="Enlla.C3.A7os_externs"></span>Enllaços externs</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Joule&action=edit&section=10" title="Modifica la secció: Enllaços externs"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://formularium.org/?go=122">Conversió d'unitats a partir del joule</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20201219030333/http://formularium.org/?go=122">Arxivat</a> 2020-12-19 a <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r33711417"><span class="languageicon" title="En anglès">(anglès)</span></li> <li><a rel="nofollow" class="external text" href="http://www.imperialtometric.com/conversion_en.htm">Convertidor de joules en línia</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r33711417"><span class="languageicon" title="En anglès">(anglès)</span></li> <li><a rel="nofollow" class="external text" href="http://www.worsleyschool.net/science/files/emc2/emc2.html">El joule en E=mc²</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r33711417"><span class="languageicon" title="En anglès">(anglès)</span></li></ul> <p><br /> </p> <div role="navigation" class="navbox" aria-labelledby="Unitats_del_Sistema_Internacional" style="padding:3px"><table class="nowraplinks hlist collapsible collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="3" style="background:#b0d1ad;"><div class="plainlinks hlist navbar mini"><ul><li class="nv-view"><span typeof="mw:File"><a href="/wiki/Plantilla:Unitats_del_SI" title="Plantilla:Unitats del SI"><img alt="Vegeu aquesta plantilla" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/18px-Commons-emblem-notice.svg.png" decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/27px-Commons-emblem-notice.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/36px-Commons-emblem-notice.svg.png 2x" data-file-width="48" data-file-height="48" /></a></span></li></ul></div><div id="Unitats_del_Sistema_Internacional" style="font-size:114%;margin:0 4em"><a href="/wiki/Sistema_Internacional_d%27Unitats" title="Sistema Internacional d'Unitats">Unitats del Sistema Internacional</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%;background:#b0d1ad"><a href="/wiki/Unitat_b%C3%A0sica_del_SI" class="mw-redirect" title="Unitat bàsica del SI">Unitats bàsiques</a></th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Ampere" title="Ampere">Ampere</a></li> <li><a href="/wiki/Candela" title="Candela">Candela</a></li> <li><a href="/wiki/Kelvin" title="Kelvin">Kelvin</a></li> <li><a href="/wiki/Metre" title="Metre">Metre</a></li> <li><a href="/wiki/Mol" title="Mol">Mol</a></li> <li><a href="/wiki/Quilogram" title="Quilogram">Quilogram</a></li> <li><a href="/wiki/Segon" title="Segon">Segon</a></li></ul> </div></td><td class="navbox-image" rowspan="4" style="width:1px;padding:0px 0px 0px 2px"><div><span typeof="mw:File"><a href="/wiki/Fitxer:SI_base_unit.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/SI_base_unit.svg/75px-SI_base_unit.svg.png" decoding="async" width="75" height="75" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/SI_base_unit.svg/113px-SI_base_unit.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c8/SI_base_unit.svg/150px-SI_base_unit.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background:#b0d1ad"><a href="/wiki/Unitat_derivada_del_SI" class="mw-redirect" title="Unitat derivada del SI">Unitats derivades</a></th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Becquerel_(unitat)" title="Becquerel (unitat)">Becquerel</a></li> <li><a href="/wiki/Coulomb" title="Coulomb">Coulomb</a></li> <li><a href="/wiki/Grau_Celsius" title="Grau Celsius">Grau Celsius</a></li> <li><a href="/wiki/Estereoradian" title="Estereoradian">Estereoradian</a></li> <li><a href="/wiki/Farad" title="Farad">Farad</a></li> <li><a href="/wiki/Gray_(unitat)" title="Gray (unitat)">Gray</a></li> <li><a href="/wiki/Henry_(unitat)" title="Henry (unitat)">Henry</a></li> <li><a href="/wiki/Hertz" title="Hertz">Hertz</a></li> <li><a class="mw-selflink selflink">Joule</a></li> <li><a href="/wiki/Katal" title="Katal">Katal</a></li> <li><a href="/wiki/Lumen" title="Lumen">Lumen</a></li> <li><a href="/wiki/Lux" title="Lux">Lux</a></li> <li><a href="/wiki/Newton_(unitat)" title="Newton (unitat)">Newton</a></li> <li><a href="/wiki/Ohm_(unitat)" title="Ohm (unitat)">Ohm</a></li> <li><a href="/wiki/Pascal_(unitat)" title="Pascal (unitat)">Pascal</a></li> <li><a href="/wiki/Radian" title="Radian">Radian</a></li> <li><a href="/wiki/Siemens_(unitat)" title="Siemens (unitat)">Siemens</a></li> <li><a href="/wiki/Sievert" title="Sievert">Sievert</a></li> <li><a href="/wiki/Tesla_(unitat)" title="Tesla (unitat)">Tesla</a></li> <li><a href="/wiki/Volt" title="Volt">Volt</a></li> <li><a href="/wiki/Watt" title="Watt">Watt</a></li> <li><a href="/wiki/Weber_(unitat)" title="Weber (unitat)">Weber</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background:#b0d1ad"><a href="/wiki/Unitats_que_no_formen_part_del_SI_per%C3%B2_s%27hi_mencionen" title="Unitats que no formen part del SI però s'hi mencionen">Unitats <br />acceptades</a></th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Unitat_de_massa_at%C3%B2mica" title="Unitat de massa atòmica">Unitat de massa atòmica</a></li> <li><a href="/wiki/Unitat_astron%C3%B2mica" title="Unitat astronòmica">Unitat astronòmica</a></li> <li><a href="/wiki/Dia" title="Dia">Dia</a></li> <li><a href="/wiki/Decibel" title="Decibel">Decibel</a></li> <li><a href="/wiki/Grau_Celsius" title="Grau Celsius">Grau Celsius</a></li> <li><a href="/wiki/Grau_sexagesimal" title="Grau sexagesimal">Grau sexagesimal</a></li> <li><a href="/wiki/Electr%C3%B3-volt" title="Electró-volt">Electró-volt</a></li> <li><a href="/wiki/Hect%C3%A0rea" title="Hectàrea">Hectàrea</a></li> <li><a href="/wiki/Hora" title="Hora">Hora</a></li> <li><a href="/wiki/Litre" title="Litre">Litre</a></li> <li><a href="/wiki/Minut" title="Minut">Minut</a></li> <li><a href="/wiki/Minut_d%27arc" title="Minut d'arc">Minut d'arc</a></li> <li><a href="/wiki/Neper" title="Neper">Neper</a></li> <li><a href="/wiki/Segon_d%27arc" class="mw-redirect" title="Segon d'arc">Segon d'arc</a></li> <li><a href="/wiki/Tona_(unitat)" title="Tona (unitat)">Tona</a> <br /> <a href="/wiki/Unitat_at%C3%B2mica" title="Unitat atòmica">Unitats atòmiques</a></li> <li><a href="/wiki/Unitat_natural" title="Unitat natural">Unitats naturals</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background:#b0d1ad">Vegeu també</th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Prefixos_del_SI" class="mw-redirect" title="Prefixos del SI">Prefixos del SI</a></li> <li><a href="/wiki/Sistema_d%27unitats" title="Sistema d'unitats">Sistemes d'unitats</a></li> <li><a href="/wiki/Conversi%C3%B3_d%27unitats" title="Conversió d'unitats">Conversió d'unitats</a></li> <li><a href="/w/index.php?title=Redefinici%C3%B3_de_les_unitats_del_SI&action=edit&redlink=1" class="new" title="Redefinició de les unitats del SI (encara no existeix)">Redefinició de les unitats del SI</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Obtingut de «<a dir="ltr" href="https://ca.wikipedia.org/w/index.php?title=Joule&oldid=34013777">https://ca.wikipedia.org/w/index.php?title=Joule&oldid=34013777</a>»</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Especial:Categorias" title="Especial:Categorias">Categories</a>: <ul><li><a href="/wiki/Categoria:Unitats_derivades_del_SI" title="Categoria:Unitats derivades del SI">Unitats derivades del SI</a></li><li><a href="/wiki/Categoria:Unitats_d%27energia" title="Categoria:Unitats d'energia">Unitats d'energia</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Categories ocultes: <ul><li><a href="/wiki/Categoria:Articles_amb_enlla%C3%A7os_externs_no_actius" title="Categoria:Articles amb enllaços externs no actius">Articles amb enllaços externs no actius</a></li><li><a href="/wiki/Categoria:Articles_amb_la_plantilla_Webarchive_amb_enlla%C3%A7_wayback" 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