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class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">mòu a la barra laterala</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">Escondre</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">Començament</div> </a> </li> <li id="toc-Cronologia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Cronologia"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Cronologia</span> </div> </a> <ul id="toc-Cronologia-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-La_nòrma_dau_Sistèma_Internacionau_d'Unitats:_règlas_generalas_d'escritura_deis_unitats,_dei_simbòls_e_dei_nombres" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#La_nòrma_dau_Sistèma_Internacionau_d'Unitats:_règlas_generalas_d'escritura_deis_unitats,_dei_simbòls_e_dei_nombres"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>La nòrma dau Sistèma Internacionau d'Unitats: règlas generalas d'escritura deis unitats, dei simbòls e dei nombres</span> </div> </a> <button aria-controls="toc-La_nòrma_dau_Sistèma_Internacionau_d'Unitats:_règlas_generalas_d'escritura_deis_unitats,_dei_simbòls_e_dei_nombres-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Commuta la subsecció La nòrma dau Sistèma Internacionau d'Unitats: règlas generalas d'escritura deis unitats, dei simbòls e dei nombres</span> </button> <ul id="toc-La_nòrma_dau_Sistèma_Internacionau_d'Unitats:_règlas_generalas_d'escritura_deis_unitats,_dei_simbòls_e_dei_nombres-sublist" class="vector-toc-list"> <li id="toc-Generalitats" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Generalitats"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Generalitats</span> </div> </a> <ul id="toc-Generalitats-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Leis_unitats_fondamentalas" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Leis_unitats_fondamentalas"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Leis unitats fondamentalas</span> </div> </a> <ul id="toc-Leis_unitats_fondamentalas-sublist" class="vector-toc-list"> <li id="toc-Lo_mètre" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Lo_mètre"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2.1</span> <span>Lo mètre</span> </div> </a> <ul id="toc-Lo_mètre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Lo_quilograma" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Lo_quilograma"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2.2</span> <span>Lo quilograma</span> </div> </a> <ul id="toc-Lo_quilograma-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-La_segonda" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#La_segonda"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2.3</span> <span>La segonda</span> </div> </a> <ul id="toc-La_segonda-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-L'ampèr" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#L'ampèr"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2.4</span> <span>L'ampèr</span> </div> </a> <ul id="toc-L'ampèr-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Lo_kelvin" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Lo_kelvin"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2.5</span> <span>Lo kelvin</span> </div> </a> <ul id="toc-Lo_kelvin-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-La_candèla" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#La_candèla"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2.6</span> <span>La candèla</span> </div> </a> <ul id="toc-La_candèla-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Lo_mòl" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Lo_mòl"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2.7</span> <span>Lo mòl</span> </div> </a> <ul id="toc-Lo_mòl-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Leis_unitats_derivadas" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Leis_unitats_derivadas"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.3</span> <span>Leis unitats derivadas</span> </div> </a> <ul id="toc-Leis_unitats_derivadas-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Lei_multiples_e_sotamultiples" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Lei_multiples_e_sotamultiples"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.4</span> <span>Lei multiples e sotamultiples</span> </div> </a> <ul id="toc-Lei_multiples_e_sotamultiples-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Leis_unitats_que_fan_pas_partida_dau_Sistèma_Internacionau" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Leis_unitats_que_fan_pas_partida_dau_Sistèma_Internacionau"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.5</span> <span>Leis unitats que fan pas partida dau Sistèma Internacionau</span> </div> </a> <ul id="toc-Leis_unitats_que_fan_pas_partida_dau_Sistèma_Internacionau-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Representacion_e_simbòls" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Representacion_e_simbòls"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.6</span> <span>Representacion e simbòls</span> </div> </a> <ul id="toc-Representacion_e_simbòls-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Annèxas" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Annèxas"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Annèxas</span> </div> </a> <button aria-controls="toc-Annèxas-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Commuta la subsecció Annèxas</span> </button> <ul id="toc-Annèxas-sublist" class="vector-toc-list"> <li id="toc-Liames_intèrnes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Liames_intèrnes"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>Liames intèrnes</span> </div> </a> <ul id="toc-Liames_intèrnes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Liames_extèrnes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Liames_extèrnes"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.2</span> <span>Liames extèrnes</span> </div> </a> <ul id="toc-Liames_extèrnes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Bibliografia" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Bibliografia"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.3</span> <span>Bibliografia</span> </div> </a> <ul id="toc-Bibliografia-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Nòtas_e_referéncias" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Nòtas_e_referéncias"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.4</span> <span>Nòtas e referéncias</span> </div> </a> <ul id="toc-Nòtas_e_referéncias-sublist" class="vector-toc-list"> </ul> </li> </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="Somari" 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">Sistèma Internacionau d'Unitats</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 150 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-150" 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">150 lengas</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ab mw-list-item"><a href="https://ab.wikipedia.org/wiki/%D0%A1%D0%98" title="СИ - abkhaz" lang="ab" hreflang="ab" data-title="СИ" data-language-autonym="Аԥсшәа" data-language-local-name="abkhaz" class="interlanguage-link-target"><span>Аԥсшәа</span></a></li><li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/SI-stelsel" title="SI-stelsel - afrikaans" lang="af" hreflang="af" data-title="SI-stelsel" 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/SI-Einheitensystem" title="SI-Einheitensystem - aleman de Soïssa" lang="gsw" hreflang="gsw" data-title="SI-Einheitensystem" data-language-autonym="Alemannisch" data-language-local-name="aleman de Soïssa" 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/Sistema_Internacional_d%27Unidaz" title="Sistema Internacional d'Unidaz - aragonés" lang="an" hreflang="an" data-title="Sistema Internacional d'Unidaz" data-language-autonym="Aragonés" data-language-local-name="aragonés" 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/%D9%86%D8%B8%D8%A7%D9%85_%D8%A7%D9%84%D9%88%D8%AD%D8%AF%D8%A7%D8%AA_%D8%A7%D9%84%D8%AF%D9%88%D9%84%D9%8A" title="نظام الوحدات الدولي - arabi" lang="ar" hreflang="ar" data-title="نظام الوحدات الدولي" data-language-autonym="العربية" data-language-local-name="arabi" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D8%B3%D9%8A%D8%B3%D8%AA%D9%8A%D9%85_%D8%B9%D8%A7%D9%84%D9%85%D9%8A_%D8%AF_%D9%84%D8%B9%D8%A8%D8%B1%D8%A7%D8%AA" title="سيستيم عالمي د لعبرات - arabe marocain" lang="ary" hreflang="ary" data-title="سيستيم عالمي د لعبرات" data-language-autonym="الدارجة" data-language-local-name="arabe marocain" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%A7%D9%84%D9%86%D8%B8%D8%A7%D9%85_%D8%A7%D9%84%D8%AF%D9%88%D9%84%D9%89_%D9%84%D9%84%D9%88%D8%AD%D8%AF%D8%A7%D8%AA" title="النظام الدولى للوحدات - àrab egipci" lang="arz" hreflang="arz" data-title="النظام الدولى للوحدات" 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%86%E0%A6%A8%E0%A7%8D%E0%A6%A4%E0%A7%B0%E0%A7%8D%E0%A6%9C%E0%A6%BE%E0%A6%A4%E0%A6%BF%E0%A6%95_%E0%A6%8F%E0%A6%95%E0%A6%95_%E0%A6%AA%E0%A6%A6%E0%A7%8D%E0%A6%A7%E0%A6%A4%E0%A6%BF" title="আন্তৰ্জাতিক একক পদ্ধতি - assamès" lang="as" hreflang="as" data-title="আন্তৰ্জাতিক একক পদ্ধতি" 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/Sistema_internacional_d%27unidaes" title="Sistema internacional d'unidaes - asturian" lang="ast" hreflang="ast" data-title="Sistema internacional d'unidaes" data-language-autonym="Asturianu" data-language-local-name="asturian" 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/Beyn%C9%99lxalq_vahidl%C9%99r_sistemi" title="Beynəlxalq vahidlər sistemi - azerbaijani" lang="az" hreflang="az" data-title="Beynəlxalq vahidlər sistemi" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaijani" 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/%D9%85%DB%8C%D9%84%D8%AA%D9%84%D8%B1%D8%A2%D8%B1%D8%A7%D8%B3%DB%8C_%D8%A8%DB%8C%D8%B1%DB%8C%D9%85%D9%84%D8%B1_%D8%B3%DB%8C%D8%B3%D8%AA%D9%85%DB%8C" title="میلتلرآراسی بیریملر سیستمی - South Azerbaijani" lang="azb" hreflang="azb" data-title="میلتلرآراسی بیریملر سیستمی" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%A5%D0%B0%D0%BB%D1%8B%D2%A1-%D0%B0%D1%80%D0%B0_%D0%B1%D0%B5%D1%80%D3%99%D0%BC%D0%B5%D0%BA%D1%82%D3%99%D1%80_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B0%D2%BB%D1%8B" title="Халыҡ-ара берәмектәр системаһы - baixkir" lang="ba" hreflang="ba" data-title="Халыҡ-ара берәмектәр системаһы" data-language-autonym="Башҡортса" data-language-local-name="baixkir" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/SI" title="SI - samogitien" lang="sgs" hreflang="sgs" data-title="SI" data-language-autonym="Žemaitėška" data-language-local-name="samogitien" 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%A1%D0%86_(%D0%BC%D1%96%D0%B6%D0%BD%D0%B0%D1%80%D0%BE%D0%B4%D0%BD%D0%B0%D1%8F_%D1%81%D1%96%D1%81%D1%82%D1%8D%D0%BC%D0%B0_%D0%B0%D0%B4%D0%B7%D1%96%D0%BD%D0%B0%D0%BA_%D0%B2%D1%8B%D0%BC%D1%8F%D1%80%D1%8D%D0%BD%D0%BD%D1%8F)" title="СІ (міжнародная сістэма адзінак вымярэння) - belarús" lang="be" hreflang="be" data-title="СІ (міжнародная сістэма адзінак 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%9C%D1%96%D0%B6%D0%BD%D0%B0%D1%80%D0%BE%D0%B4%D0%BD%D0%B0%D1%8F_%D1%81%D1%8B%D1%81%D1%82%D1%8D%D0%BC%D0%B0_%D0%A1%D0%86" title="Міжнародная сыстэма СІ - Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Міжнародная сыстэма СІ" 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%9C%D0%B5%D0%B6%D0%B4%D1%83%D0%BD%D0%B0%D1%80%D0%BE%D0%B4%D0%BD%D0%B0_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B0_%D0%B5%D0%B4%D0%B8%D0%BD%D0%B8%D1%86%D0%B8" title="Международна система единици - bulgar" lang="bg" hreflang="bg" data-title="Международна система единици" data-language-autonym="Български" data-language-local-name="bulgar" 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%86%E0%A6%A8%E0%A7%8D%E0%A6%A4%E0%A6%B0%E0%A7%8D%E0%A6%9C%E0%A6%BE%E0%A6%A4%E0%A6%BF%E0%A6%95_%E0%A6%8F%E0%A6%95%E0%A6%95_%E0%A6%AA%E0%A6%A6%E0%A7%8D%E0%A6%A7%E0%A6%A4%E0%A6%BF" title="আন্তর্জাতিক একক পদ্ধতি - bengalin" lang="bn" hreflang="bn" data-title="আন্তর্জাতিক একক পদ্ধতি" data-language-autonym="বাংলা" data-language-local-name="bengalin" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Reizhiad_unanenno%C3%B9_etrebroadel" title="Reizhiad unanennoù etrebroadel - breton" lang="br" hreflang="br" data-title="Reizhiad unanennoù etrebroadel" data-language-autonym="Brezhoneg" data-language-local-name="breton" 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/SI_sistem" title="SI sistem - bosniac" lang="bs" hreflang="bs" data-title="SI sistem" data-language-autonym="Bosanski" data-language-local-name="bosniac" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-bxr mw-list-item"><a href="https://bxr.wikipedia.org/wiki/%D0%A3%D0%BB%D0%B0%D1%81%D1%85%D0%BE%D0%BE%D1%80%D0%BE%D0%BD%D0%B4%D1%8B%D0%BD_%D0%BD%D1%8D%D0%B3%D1%8D%D0%B6%D1%8B%D0%BD_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D1%8D" title="Уласхоорондын нэгэжын системэ - Russia Buriat" lang="bxr" hreflang="bxr" data-title="Уласхоорондын нэгэжын системэ" data-language-autonym="Буряад" data-language-local-name="Russia Buriat" class="interlanguage-link-target"><span>Буряад</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Sistema_Internacional_d%27Unitats" title="Sistema Internacional d'Unitats - catalan" lang="ca" hreflang="ca" data-title="Sistema Internacional d'Unitats" data-language-autonym="Català" data-language-local-name="catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%B3%DB%8C%D8%B3%D8%AA%D9%85%DB%8C_%D9%86%DB%8E%D9%88%D9%86%DB%95%D8%AA%DB%95%D9%88%DB%95%DB%8C%DB%8C%DB%8C_%DB%8C%DB%95%DA%A9%DB%95%DA%A9%D8%A7%D9%86" title="سیستمی نێونەتەوەییی یەکەکان - kurd central" lang="ckb" hreflang="ckb" data-title="سیستمی نێونەتەوەییی یەکەکان" 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/Soustava_SI" title="Soustava SI - chèc" lang="cs" hreflang="cs" data-title="Soustava SI" data-language-autonym="Čeština" data-language-local-name="chèc" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cu mw-list-item"><a href="https://cu.wikipedia.org/wiki/%D0%9C%D1%94%D0%B6%D0%B4%D0%BE%D1%83%D0%BD%D0%B0%D1%80%D0%BE%D0%B4%D1%8C%D0%BD%D1%8A_%D0%BC%D1%A3%D1%80%D1%8A_%D1%81%D1%B7%D1%81%D1%82%D0%B8%D0%BC%D0%B0" title="Мєждоународьнъ мѣръ сѷстима - eslavon" lang="cu" hreflang="cu" data-title="Мєждоународьнъ мѣръ сѷстима" data-language-autonym="Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ" data-language-local-name="eslavon" class="interlanguage-link-target"><span>Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%A1%D0%98_(%D0%92%D0%B8%C3%A7%D0%B5%D0%B2_%D0%BF%C4%95%D1%80%D1%87%D0%B8%D1%81%D0%B5%D0%BD_%D1%82%C4%95%D0%BD%D1%87%D0%B5%D1%80%D0%B8_%D1%82%D1%8B%D1%82%C4%83%D0%BC%C4%95)" title="СИ (Виçев пĕрчисен тĕнчери тытăмĕ) - chovash" lang="cv" hreflang="cv" data-title="СИ (Виçев пĕрчисен тĕнчери тытăмĕ)" data-language-autonym="Чӑвашла" data-language-local-name="chovash" 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/System_Ryngwladol_o_Unedau" title="System Ryngwladol o Unedau - gal·lès" lang="cy" hreflang="cy" data-title="System Ryngwladol o Unedau" 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/SI-systemet" title="SI-systemet - danés" lang="da" hreflang="da" data-title="SI-systemet" data-language-autonym="Dansk" data-language-local-name="danés" 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/Internationales_Einheitensystem" title="Internationales Einheitensystem - alemand" lang="de" hreflang="de" data-title="Internationales Einheitensystem" data-language-autonym="Deutsch" data-language-local-name="alemand" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-diq mw-list-item"><a href="https://diq.wikipedia.org/wiki/Sistem%C3%AA_Yewiya_%C4%B0nternasyonale" title="Sistemê Yewiya İnternasyonale - Zazaki" lang="diq" hreflang="diq" data-title="Sistemê Yewiya İnternasyonale" data-language-autonym="Zazaki" data-language-local-name="Zazaki" class="interlanguage-link-target"><span>Zazaki</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%94%CE%B9%CE%B5%CE%B8%CE%BD%CE%AD%CF%82_%CF%83%CF%8D%CF%83%CF%84%CE%B7%CE%BC%CE%B1_%CE%BC%CE%BF%CE%BD%CE%AC%CE%B4%CF%89%CE%BD" title="Διεθνές σύστημα μονάδων - grèc" lang="el" hreflang="el" data-title="Διεθνές σύστημα μονάδων" data-language-autonym="Ελληνικά" data-language-local-name="grèc" 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/International_System_of_Units" title="International System of Units - anglés" lang="en" hreflang="en" data-title="International System of Units" data-language-autonym="English" data-language-local-name="anglés" 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/Internacia_sistemo_de_unuoj" title="Internacia sistemo de unuoj - esperanto" lang="eo" hreflang="eo" data-title="Internacia sistemo de unuoj" 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/Sistema_Internacional_de_Unidades" title="Sistema Internacional de Unidades - espanhòl" lang="es" hreflang="es" data-title="Sistema Internacional de Unidades" data-language-autonym="Español" data-language-local-name="espanhòl" 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/SI" title="SI - estonian" lang="et" hreflang="et" data-title="SI" data-language-autonym="Eesti" data-language-local-name="estonian" 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/Nazioarteko_Unitate_Sistema" title="Nazioarteko Unitate Sistema - basc" lang="eu" hreflang="eu" data-title="Nazioarteko Unitate Sistema" 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/%D8%AF%D8%B3%D8%AA%DA%AF%D8%A7%D9%87_%D8%A8%DB%8C%D9%86%E2%80%8C%D8%A7%D9%84%D9%85%D9%84%D9%84%DB%8C_%DB%8C%DA%A9%D8%A7%D9%87%D8%A7" title="دستگاه بین‌المللی یکاها - perse" lang="fa" hreflang="fa" data-title="دستگاه بین‌المللی یکاها" data-language-autonym="فارسی" data-language-local-name="perse" 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/Kansainv%C3%A4linen_yksikk%C3%B6j%C3%A4rjestelm%C3%A4" title="Kansainvälinen yksikköjärjestelmä - finlandés" lang="fi" hreflang="fi" data-title="Kansainvälinen yksikköjärjestelmä" data-language-autonym="Suomi" data-language-local-name="finlandés" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fo mw-list-item"><a href="https://fo.wikipedia.org/wiki/Millumtj%C3%B3%C3%B0a_eindarskipanin" title="Millumtjóða eindarskipanin - feroés" lang="fo" hreflang="fo" data-title="Millumtjóða eindarskipanin" data-language-autonym="Føroyskt" data-language-local-name="feroés" class="interlanguage-link-target"><span>Føroyskt</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Syst%C3%A8me_international_d%27unit%C3%A9s" title="Système international d'unités - francés" lang="fr" hreflang="fr" data-title="Système international d'unités" data-language-autonym="Français" data-language-local-name="francés" 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/SI-s%C3%BCsteem" title="SI-süsteem - frisó septentrional" lang="frr" hreflang="frr" data-title="SI-süsteem" data-language-autonym="Nordfriisk" data-language-local-name="frisó septentrional" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/Sisteme_internazion%C3%A2l_di_unit%C3%A2ts" title="Sisteme internazionâl di unitâts - friolan" lang="fur" hreflang="fur" data-title="Sisteme internazionâl di unitâts" data-language-autonym="Furlan" data-language-local-name="friolan" class="interlanguage-link-target"><span>Furlan</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Ynternasjonaal_Systeem_fan_Ienheden" title="Ynternasjonaal Systeem fan Ienheden - frisó occidental" lang="fy" hreflang="fy" data-title="Ynternasjonaal Systeem fan Ienheden" data-language-autonym="Frysk" data-language-local-name="frisó occidental" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/C%C3%B3ras_Idirn%C3%A1isi%C3%BAnta_na_nAonad" title="Córas Idirnáisiúnta na nAonad - irlandés" lang="ga" hreflang="ga" data-title="Córas Idirnáisiúnta na nAonad" data-language-autonym="Gaeilge" data-language-local-name="irlandés" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gan mw-list-item"><a href="https://gan.wikipedia.org/wiki/%E5%9C%8B%E9%9A%9B%E5%96%AE%E4%BD%8D%E7%B3%BB%E7%B5%B1" title="國際單位系統 - xinès gan" lang="gan" hreflang="gan" data-title="國際單位系統" data-language-autonym="贛語" data-language-local-name="xinès gan" class="interlanguage-link-target"><span>贛語</span></a></li><li class="interlanguage-link interwiki-gcr mw-list-item"><a href="https://gcr.wikipedia.org/wiki/Sist%C3%A8m_enternasyonal_di_init%C3%A9" title="Sistèm enternasyonal di inité - créole guyanais" lang="gcr" hreflang="gcr" data-title="Sistèm enternasyonal di inité" data-language-autonym="Kriyòl gwiyannen" data-language-local-name="créole guyanais" class="interlanguage-link-target"><span>Kriyòl gwiyannen</span></a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/Siostam_Eadar-n%C3%A0iseanta_nan_Aonadan" title="Siostam Eadar-nàiseanta nan Aonadan - gaelic escossés" lang="gd" hreflang="gd" data-title="Siostam Eadar-nàiseanta nan Aonadan" data-language-autonym="Gàidhlig" data-language-local-name="gaelic escossés" 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/Sistema_Internacional_de_Unidades" title="Sistema Internacional de Unidades - galician" lang="gl" hreflang="gl" data-title="Sistema Internacional de Unidades" data-language-autonym="Galego" data-language-local-name="galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gn mw-list-item"><a href="https://gn.wikipedia.org/wiki/Ta%27%C3%A3haku%C3%A9ra_Ypykatu_Hetatet%C3%A3gua" title="Ta'ãhakuéra Ypykatu Hetatetãgua - guaraní" lang="gn" hreflang="gn" data-title="Ta'ãhakuéra Ypykatu Hetatetãgua" data-language-autonym="Avañe'ẽ" data-language-local-name="guaraní" class="interlanguage-link-target"><span>Avañe'ẽ</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9E%D7%A2%D7%A8%D7%9B%D7%AA_%D7%94%D7%99%D7%97%D7%99%D7%93%D7%95%D7%AA_%D7%94%D7%91%D7%99%D7%9F-%D7%9C%D7%90%D7%95%D7%9E%D7%99%D7%AA" title="מערכת היחידות הבין-לאומית - ebrèu" lang="he" hreflang="he" data-title="מערכת היחידות הבין-לאומית" data-language-autonym="עברית" data-language-local-name="ebrèu" 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%85%E0%A4%A8%E0%A5%8D%E0%A4%A4%E0%A4%B0%E0%A4%B0%E0%A4%BE%E0%A4%B7%E0%A5%8D%E0%A4%9F%E0%A5%8D%E0%A4%B0%E0%A5%80%E0%A4%AF_%E0%A4%AE%E0%A4%BE%E0%A4%A4%E0%A5%8D%E0%A4%B0%E0%A4%95_%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A4%A3%E0%A4%BE%E0%A4%B2%E0%A5%80" title="अन्तरराष्ट्रीय मात्रक प्रणाली - Indi" lang="hi" hreflang="hi" data-title="अन्तरराष्ट्रीय मात्रक प्रणाली" data-language-autonym="हिन्दी" data-language-local-name="Indi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/SI" title="SI - hindi de Fiji" lang="hif" hreflang="hif" data-title="SI" data-language-autonym="Fiji Hindi" data-language-local-name="hindi de Fiji" class="interlanguage-link-target"><span>Fiji Hindi</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Me%C4%91unarodni_sustav_mjernih_jedinica" title="Međunarodni sustav mjernih jedinica - croat" lang="hr" hreflang="hr" data-title="Međunarodni sustav mjernih jedinica" 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/Sist%C3%A8m_ent%C3%A8nasyonal_inite" title="Sistèm entènasyonal inite - crioll d’Haití" lang="ht" hreflang="ht" data-title="Sistèm entènasyonal inite" 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/SI-m%C3%A9rt%C3%A9kegys%C3%A9grendszer" title="SI-mértékegységrendszer - ongrés" lang="hu" hreflang="hu" data-title="SI-mértékegységrendszer" data-language-autonym="Magyar" data-language-local-name="ongrés" 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%84%D5%AB%D5%A1%D5%BE%D5%B8%D6%80%D5%B6%D5%A5%D6%80%D5%AB_%D5%B4%D5%AB%D5%BB%D5%A1%D5%A6%D5%A3%D5%A1%D5%B5%D5%AB%D5%B6_%D5%B0%D5%A1%D5%B4%D5%A1%D5%AF%D5%A1%D6%80%D5%A3" title="Միավորների միջազգային համակարգ - armèni" lang="hy" hreflang="hy" data-title="Միավորների միջազգային համակարգ" data-language-autonym="Հայերեն" data-language-local-name="armèni" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hyw mw-list-item"><a href="https://hyw.wikipedia.org/wiki/%D5%84%D5%AB%D5%A1%D6%82%D5%B8%D6%80%D5%B6%D5%A5%D6%80%D5%B8%D6%82_%D5%84%D5%AB%D5%BB%D5%A1%D5%A6%D5%A3%D5%A1%D5%B5%D5%AB%D5%B6_%D5%80%D5%A1%D5%B4%D5%A1%D5%AF%D5%A1%D6%80%D5%A3" title="Միաւորներու Միջազգային Համակարգ - arménien occidental" lang="hyw" hreflang="hyw" data-title="Միաւորներու Միջազգային Համակարգ" data-language-autonym="Արեւմտահայերէն" data-language-local-name="arménien occidental" class="interlanguage-link-target"><span>Արեւմտահայերէն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Systema_International_de_Unitates" title="Systema International de Unitates - interlingua" lang="ia" hreflang="ia" data-title="Systema International de Unitates" 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/Sistem_Satuan_Internasional" title="Sistem Satuan Internasional - indonesian" lang="id" hreflang="id" data-title="Sistem Satuan Internasional" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ie mw-list-item"><a href="https://ie.wikipedia.org/wiki/Sistema_International_de_Unit%C3%A9s" title="Sistema International de Unités - interlingue" lang="ie" hreflang="ie" data-title="Sistema International de Unités" data-language-autonym="Interlingue" data-language-local-name="interlingue" class="interlanguage-link-target"><span>Interlingue</span></a></li><li class="interlanguage-link interwiki-ilo mw-list-item"><a href="https://ilo.wikipedia.org/wiki/Internasional_a_Sistema_dagiti_Yunit" title="Internasional a Sistema dagiti Yunit - ilocano" lang="ilo" hreflang="ilo" data-title="Internasional a Sistema dagiti Yunit" data-language-autonym="Ilokano" data-language-local-name="ilocano" class="interlanguage-link-target"><span>Ilokano</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Internaciona_Sistemo_di_Unaji" title="Internaciona Sistemo di Unaji - ido" lang="io" hreflang="io" data-title="Internaciona Sistemo di Unaji" data-language-autonym="Ido" data-language-local-name="ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Al%C3%BEj%C3%B3%C3%B0lega_einingakerfi%C3%B0" title="Alþjóðlega einingakerfið - islandés" lang="is" hreflang="is" data-title="Alþjóðlega einingakerfið" data-language-autonym="Íslenska" data-language-local-name="islandés" 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/Sistema_internazionale_di_unit%C3%A0_di_misura" title="Sistema internazionale di unità di misura - italian" lang="it" hreflang="it" data-title="Sistema internazionale di unità di misura" data-language-autonym="Italiano" data-language-local-name="italian" 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/%E5%9B%BD%E9%9A%9B%E5%8D%98%E4%BD%8D%E7%B3%BB" title="国際単位系 - japonés" lang="ja" hreflang="ja" data-title="国際単位系" data-language-autonym="日本語" data-language-local-name="japonés" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jam mw-list-item"><a href="https://jam.wikipedia.org/wiki/Intanashinal_Sistim_a_Yuunit" title="Intanashinal Sistim a Yuunit - crioll anglès de Jamaica" lang="jam" hreflang="jam" data-title="Intanashinal Sistim a Yuunit" data-language-autonym="Patois" data-language-local-name="crioll anglès de Jamaica" class="interlanguage-link-target"><span>Patois</span></a></li><li class="interlanguage-link interwiki-jbo mw-list-item"><a href="https://jbo.wikipedia.org/wiki/treci%27e" title="treci'e - lojban" lang="jbo" hreflang="jbo" data-title="treci'e" data-language-autonym="La .lojban." data-language-local-name="lojban" class="interlanguage-link-target"><span>La .lojban.</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Sistem_P%C3%A9tungan_Internasional" title="Sistem Pétungan Internasional - javanés" lang="jv" hreflang="jv" data-title="Sistem Pétungan Internasional" data-language-autonym="Jawa" data-language-local-name="javanés" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%94%E1%83%A0%E1%83%97%E1%83%94%E1%83%A3%E1%83%9A%E1%83%97%E1%83%90_%E1%83%A1%E1%83%90%E1%83%94%E1%83%A0%E1%83%97%E1%83%90%E1%83%A8%E1%83%9D%E1%83%A0%E1%83%98%E1%83%A1%E1%83%9D_%E1%83%A1%E1%83%98%E1%83%A1%E1%83%A2%E1%83%94%E1%83%9B%E1%83%90" title="ერთეულთა საერთაშორისო სისტემა - georgian" lang="ka" hreflang="ka" data-title="ერთეულთა საერთაშორისო სისტემა" data-language-autonym="ქართული" data-language-local-name="georgian" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Anagraw_agra%C9%A3lan_n_tiynin" title="Anagraw agraɣlan n tiynin - cabil" lang="kab" hreflang="kab" data-title="Anagraw agraɣlan n tiynin" data-language-autonym="Taqbaylit" data-language-local-name="cabil" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-kcg mw-list-item"><a href="https://kcg.wikipedia.org/wiki/Si%CC%B1tem_Mai-nkyang_Bibyin_Swanta" title="Si̱tem Mai-nkyang Bibyin Swanta - tyap" lang="kcg" hreflang="kcg" data-title="Si̱tem Mai-nkyang Bibyin Swanta" data-language-autonym="Tyap" data-language-local-name="tyap" class="interlanguage-link-target"><span>Tyap</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%A5%D0%B0%D0%BB%D1%8B%D2%9B%D0%B0%D1%80%D0%B0%D0%BB%D1%8B%D2%9B_%D0%B1%D1%96%D1%80%D0%BB%D1%96%D0%BA%D1%82%D0%B5%D1%80_%D0%B6%D2%AF%D0%B9%D0%B5%D1%81%D1%96" title="Халықаралық бірліктер жүйесі - cazac" lang="kk" hreflang="kk" data-title="Халықаралық бірліктер жүйесі" data-language-autonym="Қазақша" data-language-local-name="cazac" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-km mw-list-item"><a href="https://km.wikipedia.org/wiki/%E1%9E%94%E1%9F%92%E1%9E%9A%E1%9E%96%E1%9F%90%E1%9E%93%E1%9F%92%E1%9E%92%E1%9E%81%E1%9F%92%E1%9E%93%E1%9E%B6%E1%9E%8F%E1%9E%A2%E1%9E%93%E1%9F%92%E1%9E%8F%E1%9E%9A%E1%9E%87%E1%9E%B6%E1%9E%8F%E1%9E%B7" title="ប្រព័ន្ធខ្នាតអន្តរជាតិ - cambojian" lang="km" hreflang="km" data-title="ប្រព័ន្ធខ្នាតអន្តរជាតិ" data-language-autonym="ភាសាខ្មែរ" data-language-local-name="cambojian" class="interlanguage-link-target"><span>ភាសាខ្មែរ</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%85%E0%B2%82%E0%B2%A4%E0%B2%B0%E0%B2%B0%E0%B2%BE%E0%B2%B7%E0%B3%8D%E0%B2%9F%E0%B3%8D%E0%B2%B0%E0%B3%80%E0%B2%AF_%E0%B2%8F%E0%B2%95%E0%B2%AE%E0%B2%BE%E0%B2%A8_%E0%B2%B5%E0%B3%8D%E0%B2%AF%E0%B2%B5%E0%B2%B8%E0%B3%8D%E0%B2%A5%E0%B3%86" title="ಅಂತರರಾಷ್ಟ್ರೀಯ ಏಕಮಾನ ವ್ಯವಸ್ಥೆ - kannada" lang="kn" hreflang="kn" data-title="ಅಂತರರಾಷ್ಟ್ರೀಯ ಏಕಮಾನ ವ್ಯವಸ್ಥೆ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EA%B5%AD%EC%A0%9C%EB%8B%A8%EC%9C%84%EA%B3%84" title="국제단위계 - corean" lang="ko" hreflang="ko" data-title="국제단위계" data-language-autonym="한국어" data-language-local-name="corean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-krc badge-Q17437798 badge-goodarticle mw-list-item" title="bons articles"><a href="https://krc.wikipedia.org/wiki/%D0%81%D0%A1" title="ЁС - karatxai-balkar" lang="krc" hreflang="krc" data-title="ЁС" 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-ksh mw-list-item"><a href="https://ksh.wikipedia.org/wiki/SI-Basiseinheite" title="SI-Basiseinheite - kölsch" lang="ksh" hreflang="ksh" data-title="SI-Basiseinheite" data-language-autonym="Ripoarisch" data-language-local-name="kölsch" class="interlanguage-link-target"><span>Ripoarisch</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Pergala_Navnetewey%C3%AE_ya_Yekeyan" title="Pergala Navneteweyî ya Yekeyan - curd" lang="ku" hreflang="ku" data-title="Pergala Navneteweyî ya Yekeyan" data-language-autonym="Kurdî" data-language-local-name="curd" 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/Kevreyth_Keswlasek_Unsesow" title="Kevreyth Keswlasek Unsesow - cornic" lang="kw" hreflang="kw" data-title="Kevreyth Keswlasek Unsesow" data-language-autonym="Kernowek" data-language-local-name="cornic" 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%AD%D0%BB_%D0%B0%D1%80%D0%B0%D0%BB%D1%8B%D0%BA_%D0%B1%D0%B8%D1%80%D0%B4%D0%B8%D0%BA%D1%82%D0%B5%D1%80_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B0%D1%81%D1%8B" title="Эл аралык бирдиктер системасы - kirguís" lang="ky" hreflang="ky" data-title="Эл аралык бирдиктер системасы" 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/Systema_internationale_unitatum" title="Systema internationale unitatum - latin" lang="la" hreflang="la" data-title="Systema internationale unitatum" data-language-autonym="Latina" data-language-local-name="latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Internationalen_Eenheetesystem" title="Internationalen Eenheetesystem - luxemborgés" lang="lb" hreflang="lb" data-title="Internationalen Eenheetesystem" data-language-autonym="Lëtzebuergesch" data-language-local-name="luxemborgés" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lfn mw-list-item"><a href="https://lfn.wikipedia.org/wiki/Sistem_Internasional_de_Unias" title="Sistem Internasional de Unias - lingua franca nova" lang="lfn" hreflang="lfn" data-title="Sistem Internasional de Unias" data-language-autonym="Lingua Franca Nova" data-language-local-name="lingua franca nova" class="interlanguage-link-target"><span>Lingua Franca Nova</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/SI" title="SI - limburguès" lang="li" hreflang="li" data-title="SI" 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/Sistema_internazional_d%27unitaa" title="Sistema internazional d'unitaa - llombard" lang="lmo" hreflang="lmo" data-title="Sistema internazional d'unitaa" 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/SI_(sistema)" title="SI (sistema) - lituan" lang="lt" hreflang="lt" data-title="SI (sistema)" data-language-autonym="Lietuvių" data-language-local-name="lituan" 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/Starptautisk%C4%81_m%C4%93rvien%C4%ABbu_sist%C4%93ma" title="Starptautiskā mērvienību sistēma - leton" lang="lv" hreflang="lv" data-title="Starptautiskā mērvienību sistēma" data-language-autonym="Latviešu" data-language-local-name="leton" 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%9C%D0%B5%D1%93%D1%83%D0%BD%D0%B0%D1%80%D0%BE%D0%B4%D0%B5%D0%BD_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC_%D0%BD%D0%B0_%D0%BC%D0%B5%D1%80%D0%BD%D0%B8_%D0%B5%D0%B4%D0%B8%D0%BD%D0%B8%D1%86%D0%B8" title="Меѓународен систем на мерни единици - macedonian" lang="mk" hreflang="mk" data-title="Меѓународен систем на мерни единици" data-language-autonym="Македонски" data-language-local-name="macedonian" 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%85%E0%B4%A8%E0%B5%8D%E0%B4%A4%E0%B4%BE%E0%B4%B0%E0%B4%BE%E0%B4%B7%E0%B5%8D%E0%B4%9F%E0%B5%8D%E0%B4%B0_%E0%B4%8F%E0%B4%95%E0%B4%95%E0%B4%B5%E0%B5%8D%E0%B4%AF%E0%B4%B5%E0%B4%B8%E0%B5%8D%E0%B4%A5" title="അന്താരാഷ്ട്ര ഏകകവ്യവസ്ഥ - malaiàlam" lang="ml" hreflang="ml" data-title="അന്താരാഷ്ട്ര ഏകകവ്യവസ്ഥ" 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%9E%D0%BB%D0%BE%D0%BD_%D1%83%D0%BB%D1%81%D1%8B%D0%BD_%D0%BD%D1%8D%D0%B3%D0%B6%D0%B8%D0%B9%D0%BD_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC" title="Олон улсын нэгжийн систем - mongòl" lang="mn" hreflang="mn" data-title="Олон улсын нэгжийн систем" data-language-autonym="Монгол" data-language-local-name="mongòl" 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%8F%E0%A4%B8.%E0%A4%86%E0%A4%AF." title="एस.आय. - marathi" lang="mr" hreflang="mr" data-title="एस.आय." 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/Sistem_Unit_Antarabangsa" title="Sistem Unit Antarabangsa - malai" lang="ms" hreflang="ms" data-title="Sistem Unit Antarabangsa" 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-mt mw-list-item"><a href="https://mt.wikipedia.org/wiki/Sistema_Internazzjonali_ta%27_Unitajiet" title="Sistema Internazzjonali ta' Unitajiet - maltés" lang="mt" hreflang="mt" data-title="Sistema Internazzjonali ta' Unitajiet" data-language-autonym="Malti" data-language-local-name="maltés" class="interlanguage-link-target"><span>Malti</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%A1%E1%80%95%E1%80%BC%E1%80%8A%E1%80%BA%E1%80%95%E1%80%BC%E1%80%8A%E1%80%BA%E1%80%86%E1%80%AD%E1%80%AF%E1%80%84%E1%80%BA%E1%80%9B%E1%80%AC_%E1%80%9A%E1%80%B0%E1%80%94%E1%80%85%E1%80%BA%E1%80%85%E1%80%94%E1%80%85%E1%80%BA" title="အပြည်ပြည်ဆိုင်ရာ ယူနစ်စနစ် - birman" lang="my" hreflang="my" data-title="အပြည်ပြည်ဆိုင်ရာ ယူနစ်စနစ်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="birman" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Internatschonal_Eenheitensystem" title="Internatschonal Eenheitensystem - baix alemany" lang="nds" hreflang="nds" data-title="Internatschonal Eenheitensystem" data-language-autonym="Plattdüütsch" data-language-local-name="baix alemany" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%85%E0%A4%A8%E0%A5%8D%E0%A4%A4%E0%A4%B0%E0%A5%8D%E0%A4%B0%E0%A4%BE%E0%A4%B7%E0%A5%8D%E0%A4%9F%E0%A5%8D%E0%A4%B0%E0%A5%80%E0%A4%AF_%E0%A4%AE%E0%A4%BE%E0%A4%A4%E0%A5%8D%E0%A4%B0%E0%A4%95_%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A4%A3%E0%A4%BE%E0%A4%B2%E0%A5%80" title="अन्तर्राष्ट्रीय मात्रक प्रणाली - nepalés" lang="ne" hreflang="ne" data-title="अन्तर्राष्ट्रीय मात्रक प्रणाली" data-language-autonym="नेपाली" data-language-local-name="nepalés" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%8F%E0%A4%B8%E0%A5%8D_%E0%A4%86%E0%A4%87" title="एस् आइ - newari" lang="new" hreflang="new" data-title="एस् आइ" data-language-autonym="नेपाल भाषा" data-language-local-name="newari" class="interlanguage-link-target"><span>नेपाल भाषा</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/SI-stelsel" title="SI-stelsel - neerlandés" lang="nl" hreflang="nl" data-title="SI-stelsel" data-language-autonym="Nederlands" data-language-local-name="neerlandés" 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/SI-systemet" title="SI-systemet - norvegian nynorsk" lang="nn" hreflang="nn" data-title="SI-systemet" data-language-autonym="Norsk nynorsk" data-language-local-name="norvegian 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/SI-systemet" title="SI-systemet - norvegian bokmål" lang="nb" hreflang="nb" data-title="SI-systemet" data-language-autonym="Norsk bokmål" data-language-local-name="norvegian bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nso mw-list-item"><a href="https://nso.wikipedia.org/wiki/SI" title="SI - sotho septentrional" lang="nso" hreflang="nso" data-title="SI" data-language-autonym="Sesotho sa Leboa" data-language-local-name="sotho septentrional" class="interlanguage-link-target"><span>Sesotho sa Leboa</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%85%E0%A9%B0%E0%A8%A4%E0%A8%B0%E0%A8%B0%E0%A8%BE%E0%A8%B8%E0%A8%BC%E0%A8%9F%E0%A8%B0%E0%A9%80_%E0%A8%87%E0%A8%95%E0%A8%BE%E0%A8%88_%E0%A8%AA%E0%A9%8D%E0%A8%B0%E0%A8%A3%E0%A8%BE%E0%A8%B2%E0%A9%80" title="ਅੰਤਰਰਾਸ਼ਟਰੀ ਇਕਾਈ ਪ੍ਰਣਾਲੀ - punjabi" lang="pa" hreflang="pa" data-title="ਅੰਤਰਰਾਸ਼ਟਰੀ ਇਕਾਈ ਪ੍ਰਣਾਲੀ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Uk%C5%82ad_SI" title="Układ SI - polonés" lang="pl" hreflang="pl" data-title="Układ SI" data-language-autonym="Polski" data-language-local-name="polonés" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%A7%DA%A9%D8%A7%D8%A6%DB%8C%D8%A7%DA%BA_%D8%AF%D8%A7_%D8%B9%D8%A7%D9%84%D9%85%DB%8C_%D9%86%D8%B8%D8%A7%D9%85" title="اکائیاں دا عالمی نظام - Western Punjabi" lang="pnb" hreflang="pnb" data-title="اکائیاں دا عالمی نظام" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D8%AF_%D9%88%D8%A7%D8%AD%D8%AF%D9%88%D9%86%D9%88_%D9%86%DA%93%D9%8A%D9%88%D8%A7%D9%84_%D8%B3%D9%8A%D8%B3%D8%AA%D9%85" title="د واحدونو نړيوال سيستم - pashto" lang="ps" hreflang="ps" data-title="د واحدونو نړيوال سيستم" data-language-autonym="پښتو" data-language-local-name="pashto" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Sistema_Internacional_de_Unidades" title="Sistema Internacional de Unidades - portugués" lang="pt" hreflang="pt" data-title="Sistema Internacional de Unidades" data-language-autonym="Português" data-language-local-name="portugués" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/SI_tupuy" title="SI tupuy - quechua" lang="qu" hreflang="qu" data-title="SI tupuy" data-language-autonym="Runa Simi" data-language-local-name="quechua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ro badge-Q17437796 badge-featuredarticle mw-list-item" title="articles de qualitat"><a href="https://ro.wikipedia.org/wiki/Sistemul_interna%C8%9Bional_de_unit%C4%83%C8%9Bi" title="Sistemul internațional de unități - romanés" lang="ro" hreflang="ro" data-title="Sistemul internațional de unități" data-language-autonym="Română" data-language-local-name="romanés" 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/Sisteme_%27Ndernazionale_de_aunit%C3%A0_de_mesure" title="Sisteme 'Ndernazionale de aunità de mesure - Tarantino" lang="nap-x-tara" hreflang="nap-x-tara" data-title="Sisteme 'Ndernazionale de aunità de mesure" 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%9C%D0%B5%D0%B6%D0%B4%D1%83%D0%BD%D0%B0%D1%80%D0%BE%D0%B4%D0%BD%D0%B0%D1%8F_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B0_%D0%B5%D0%B4%D0%B8%D0%BD%D0%B8%D1%86" title="Международная система единиц - rus" lang="ru" hreflang="ru" data-title="Международная система единиц" data-language-autonym="Русский" data-language-local-name="rus" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-rue mw-list-item"><a href="https://rue.wikipedia.org/wiki/%D0%A1%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B0_SI" title="Система SI - ruthène" lang="rue" hreflang="rue" data-title="Система SI" data-language-autonym="Русиньскый" data-language-local-name="ruthène" class="interlanguage-link-target"><span>Русиньскый</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%9E%D0%BC%D1%83%D0%BA%D1%82%D0%B0%D1%80%D0%B4%D0%B0%D0%B0%D2%95%D1%8B_%D0%B1%D0%B8%D0%B8%D1%80%D0%B4%D0%B8%D0%BA_%D1%82%D1%83%D1%82%D1%83%D0%BC%D1%82%D0%B0%D1%82%D0%B0" title="Омуктардааҕы биирдик тутумтата - iacut" lang="sah" hreflang="sah" data-title="Омуктардааҕы биирдик тутумтата" data-language-autonym="Саха тыла" data-language-local-name="iacut" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Sistema_Internatzionale_de_Unidades_de_Medida" title="Sistema Internatzionale de Unidades de Medida - sard" lang="sc" hreflang="sc" data-title="Sistema Internatzionale de Unidades de Medida" 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/Sistema_%27ntirnazziunali_di_unitati_di_misura" title="Sistema 'ntirnazziunali di unitati di misura - sicilian" lang="scn" hreflang="scn" data-title="Sistema 'ntirnazziunali di unitati di misura" data-language-autonym="Sicilianu" data-language-local-name="sicilian" 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/SI" title="SI - escossés" lang="sco" hreflang="sco" data-title="SI" data-language-autonym="Scots" data-language-local-name="escossés" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D8%A7%DA%AA%D8%A7%D8%A6%D9%8A%D9%86_%D8%AC%D9%88_%D8%A8%D9%8A%D9%86_%D8%A7%D9%84%D8%A7%D9%82%D9%88%D8%A7%D9%85%D9%8A_%D9%86%D8%B8%D8%A7%D9%85" title="اڪائين جو بين الاقوامي نظام - sindi" lang="sd" hreflang="sd" data-title="اڪائين جو بين الاقوامي نظام" data-language-autonym="سنڌي" data-language-local-name="sindi" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-se mw-list-item"><a href="https://se.wikipedia.org/wiki/SI-systema" title="SI-systema - sami septentrional" lang="se" hreflang="se" data-title="SI-systema" data-language-autonym="Davvisámegiella" data-language-local-name="sami septentrional" class="interlanguage-link-target"><span>Davvisámegiella</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Me%C4%91unarodni_sistem_%D1%98edinica" title="Međunarodni sistem јedinica - serbocroat" lang="sh" hreflang="sh" data-title="Međunarodni sistem јedinica" 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%85%E0%B6%B1%E0%B7%8A%E0%B6%AD%E0%B6%BB%E0%B7%8A%E0%B6%A2%E0%B7%8F%E0%B6%AD%E0%B7%92%E0%B6%9A_%E0%B6%92%E0%B6%9A%E0%B6%9A_%E0%B6%B4%E0%B6%AF%E0%B7%8A%E0%B6%B0%E0%B6%AD%E0%B7%92%E0%B6%BA" title="අන්තර්ජාතික ඒකක පද්ධතිය - singalès" lang="si" hreflang="si" data-title="අන්තර්ජාතික ඒකක පද්ධතිය" 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/International_System_of_Units" title="International System of Units - Simple English" lang="en-simple" hreflang="en-simple" data-title="International System of Units" 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/SI" title="SI - eslovac" lang="sk" hreflang="sk" data-title="SI" 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/Mednarodni_sistem_enot" title="Mednarodni sistem enot - eslovèn" lang="sl" hreflang="sl" data-title="Mednarodni sistem enot" data-language-autonym="Slovenščina" data-language-local-name="eslovèn" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/Horgale_(Fiisikis)" title="Horgale (Fiisikis) - somali" lang="so" hreflang="so" data-title="Horgale (Fiisikis)" data-language-autonym="Soomaaliga" data-language-local-name="somali" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Sistemi_Nd%C3%ABrkomb%C3%ABtar_i_Nj%C3%ABsive" title="Sistemi Ndërkombëtar i Njësive - albanés" lang="sq" hreflang="sq" data-title="Sistemi Ndërkombëtar i Njësive" data-language-autonym="Shqip" data-language-local-name="albanés" 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%9C%D0%B5%D1%92%D1%83%D0%BD%D0%B0%D1%80%D0%BE%D0%B4%D0%BD%D0%B8_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC_%D1%98%D0%B5%D0%B4%D0%B8%D0%BD%D0%B8%D1%86%D0%B0" title="Међународни систем јединица - serbi" lang="sr" hreflang="sr" data-title="Међународни систем јединица" 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/Sistem_Hijian_Internasional" title="Sistem Hijian Internasional - sondanès" lang="su" hreflang="su" data-title="Sistem Hijian Internasional" 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/Internationella_m%C3%A5ttenhetssystemet" title="Internationella måttenhetssystemet - suedés" lang="sv" hreflang="sv" data-title="Internationella måttenhetssystemet" data-language-autonym="Svenska" data-language-local-name="suedés" 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/Vipimo_sanifu_vya_kimataifa" title="Vipimo sanifu vya kimataifa - swahili" lang="sw" hreflang="sw" data-title="Vipimo sanifu vya kimataifa" data-language-autonym="Kiswahili" data-language-local-name="swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%85%E0%AE%A9%E0%AF%88%E0%AE%A4%E0%AF%8D%E0%AE%A4%E0%AF%81%E0%AE%B2%E0%AE%95_%E0%AE%AE%E0%AF%81%E0%AE%B1%E0%AF%88_%E0%AE%85%E0%AE%B2%E0%AE%95%E0%AF%81%E0%AE%95%E0%AE%B3%E0%AF%8D" title="அனைத்துலக முறை அலகுகள் - tamol" lang="ta" hreflang="ta" data-title="அனைத்துலக முறை அலகுகள்" data-language-autonym="தமிழ்" data-language-local-name="tamol" 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%85%E0%B0%82%E0%B0%A4%E0%B0%B0%E0%B1%8D%E0%B0%9C%E0%B0%BE%E0%B0%A4%E0%B1%80%E0%B0%AF_%E0%B0%AA%E0%B1%8D%E0%B0%B0%E0%B0%AE%E0%B0%BE%E0%B0%A3%E0%B0%BE%E0%B0%B2_%E0%B0%AA%E0%B0%A6%E0%B1%8D%E0%B0%A7%E0%B0%A4%E0%B0%BF" title="అంతర్జాతీయ ప్రమాణాల పద్ధతి - telogó" lang="te" hreflang="te" data-title="అంతర్జాతీయ ప్రమాణాల పద్ధతి" data-language-autonym="తెలుగు" data-language-local-name="telogó" 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%A3%E0%B8%B0%E0%B8%9A%E0%B8%9A%E0%B8%AB%E0%B8%99%E0%B9%88%E0%B8%A7%E0%B8%A2%E0%B8%A7%E0%B8%B1%E0%B8%94%E0%B8%A3%E0%B8%B0%E0%B8%AB%E0%B8%A7%E0%B9%88%E0%B8%B2%E0%B8%87%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B9%80%E0%B8%97%E0%B8%A8" title="ระบบหน่วยวัดระหว่างประเทศ - tai" lang="th" hreflang="th" data-title="ระบบหน่วยวัดระหว่างประเทศ" data-language-autonym="ไทย" data-language-local-name="tai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-ti mw-list-item"><a href="https://ti.wikipedia.org/wiki/%E1%8B%93%E1%88%88%E1%88%9D%E1%88%88%E1%8A%BB%E1%8B%8A_%E1%88%B5%E1%88%AD%E1%8B%93%E1%89%B5_%E1%8A%A3%E1%88%83%E1%8B%B1%E1%89%B3%E1%89%B5_%E1%88%98%E1%88%88%E1%8A%AD%E1%8B%92" title="ዓለምለኻዊ ስርዓት ኣሃዱታት መለክዒ - tigrinya" lang="ti" hreflang="ti" data-title="ዓለምለኻዊ ስርዓት ኣሃዱታት መለክዒ" data-language-autonym="ትግርኛ" data-language-local-name="tigrinya" class="interlanguage-link-target"><span>ትግርኛ</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Pandaigdigang_Sistema_ng_mga_Yunit" title="Pandaigdigang Sistema ng mga Yunit - tagal" lang="tl" hreflang="tl" data-title="Pandaigdigang Sistema ng mga Yunit" data-language-autonym="Tagalog" data-language-local-name="tagal" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Uluslararas%C4%B1_Birimler_Sistemi" title="Uluslararası Birimler Sistemi - turc" lang="tr" hreflang="tr" data-title="Uluslararası Birimler Sistemi" data-language-autonym="Türkçe" data-language-local-name="turc" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tt badge-Q17437798 badge-goodarticle mw-list-item" title="bons articles"><a href="https://tt.wikipedia.org/wiki/%D0%A5%D0%B0%D0%BB%D1%8B%D0%BA%D0%B0%D1%80%D0%B0_%D0%B1%D0%B5%D1%80%D3%99%D0%BC%D0%BB%D0%B5%D0%BA%D0%BB%D3%99%D1%80_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B0%D1%81%D1%8B" title="Халыкара берәмлекләр системасы - tatar" lang="tt" hreflang="tt" data-title="Халыкара берәмлекләр системасы" data-language-autonym="Татарча / tatarça" data-language-local-name="tatar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-tyv mw-list-item"><a href="https://tyv.wikipedia.org/wiki/%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B0%D1%86%D0%B8%D0%BE%D0%BD%D0%B0%D0%BB%D0%B4%D1%8B%D0%B3_%D1%85%D0%B5%D0%BC%D1%87%D0%B5%D0%B3%D0%BB%D0%B5%D1%80_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B0%D0%B7%D1%8B" title="Интернационалдыг хемчеглер системазы - tuvinià" lang="tyv" hreflang="tyv" data-title="Интернационалдыг хемчеглер системазы" data-language-autonym="Тыва дыл" data-language-local-name="tuvinià" class="interlanguage-link-target"><span>Тыва дыл</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9C%D1%96%D0%B6%D0%BD%D0%B0%D1%80%D0%BE%D0%B4%D0%BD%D0%B0_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B0_%D0%BE%D0%B4%D0%B8%D0%BD%D0%B8%D1%86%D1%8C_(SI)" title="Міжнародна система одиниць (SI) - ucrainés" lang="uk" hreflang="uk" data-title="Міжнародна система одиниць (SI)" data-language-autonym="Українська" data-language-local-name="ucrainés" 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%A8%DB%8C%D9%86_%D8%A7%D9%84%D8%A7%D9%82%D9%88%D8%A7%D9%85%DB%8C_%D9%86%D8%B8%D8%A7%D9%85_%D8%A7%DA%A9%D8%A7%D8%A6%DB%8C%D8%A7%D8%AA" title="بین الاقوامی نظام اکائیات - ordó" lang="ur" hreflang="ur" data-title="بین الاقوامی نظام اکائیات" data-language-autonym="اردو" data-language-local-name="ordó" 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/Xalqaro_birliklar_tizimi" title="Xalqaro birliklar tizimi - ozbèc" lang="uz" hreflang="uz" data-title="Xalqaro birliklar tizimi" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="ozbèc" 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/Sistema_Internasiona%C5%82e_de_unit%C3%A0_de_mezura" title="Sistema Internasionałe de unità de mezura - vènet" lang="vec" hreflang="vec" data-title="Sistema Internasionałe de unità de mezura" 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/H%E1%BB%87_%C4%91o_l%C6%B0%E1%BB%9Dng_qu%E1%BB%91c_t%E1%BA%BF" title="Hệ đo lường quốc tế - vietnamian" lang="vi" hreflang="vi" data-title="Hệ đo lường quốc tế" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamian" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-vls mw-list-item"><a href="https://vls.wikipedia.org/wiki/SI-syst%C3%A8m" title="SI-systèm - flamenc occidental" lang="vls" hreflang="vls" data-title="SI-systèm" data-language-autonym="West-Vlams" data-language-local-name="flamenc occidental" class="interlanguage-link-target"><span>West-Vlams</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Kanasodnon_Sistema_han_mga_Yunit" title="Kanasodnon Sistema han mga Yunit - waray" lang="war" hreflang="war" data-title="Kanasodnon Sistema han mga Yunit" 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/%E5%9C%8B%E9%9A%9B%E5%96%AE%E4%BD%8D%E5%88%B6" title="國際單位制 - xinès wu" lang="wuu" hreflang="wuu" data-title="國際單位制" 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-xh mw-list-item"><a href="https://xh.wikipedia.org/wiki/Inkqubo_yamazwe_ngamazwe_yeeyunithi_zokulinganisa" title="Inkqubo yamazwe ngamazwe yeeyunithi zokulinganisa - xhòsa" lang="xh" hreflang="xh" data-title="Inkqubo yamazwe ngamazwe yeeyunithi zokulinganisa" data-language-autonym="IsiXhosa" data-language-local-name="xhòsa" class="interlanguage-link-target"><span>IsiXhosa</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%90%D7%99%D7%A0%D7%98%D7%A2%D7%A8%D7%A0%D7%90%D7%A6%D7%99%D7%90%D7%A0%D7%90%D7%9C%D7%A2_%D7%A1%D7%99%D7%A1%D7%98%D7%A2%D7%9D_%D7%A4%D7%95%D7%9F_%D7%90%D7%99%D7%99%D7%A0%D7%A1%D7%9F" title="אינטערנאציאנאלע סיסטעם פון איינסן - yiddish" lang="yi" hreflang="yi" data-title="אינטערנאציאנאלע סיסטעם פון איינסן" data-language-autonym="ייִדיש" data-language-local-name="yiddish" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-yo mw-list-item"><a href="https://yo.wikipedia.org/wiki/%C3%8Cw%E1%BB%8D%CC%80n_%E1%BA%B8y%E1%BB%8D_Ak%C3%A1r%C3%ADay%C3%A9_SI" title="Ìwọ̀n Ẹyọ Akáríayé SI - yoruba" lang="yo" hreflang="yo" data-title="Ìwọ̀n Ẹyọ Akáríayé SI" data-language-autonym="Yorùbá" data-language-local-name="yoruba" class="interlanguage-link-target"><span>Yorùbá</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%9B%BD%E9%99%85%E5%8D%95%E4%BD%8D%E5%88%B6" title="国际单位制 - chinés" lang="zh" hreflang="zh" data-title="国际单位制" data-language-autonym="中文" data-language-local-name="chinés" 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/%E8%90%AC%E5%9C%8B%E5%85%AC%E5%88%B6" title="萬國公制 - xinès clàssic" lang="lzh" hreflang="lzh" data-title="萬國公制" 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-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Kok-ch%C3%A8_Tan-%C5%ABi_H%C4%93-th%C3%B3ng" title="Kok-chè Tan-ūi Hē-thóng - xinès min del sud" lang="nan" hreflang="nan" data-title="Kok-chè Tan-ūi Hē-thóng" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="xinès min del sud" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E5%9C%8B%E9%9A%9B%E5%96%AE%E4%BD%8D%E5%88%B6" title="國際單位制 - 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<figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fichi%C3%A8r:International_System_Of_Units_Logo.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/International_System_Of_Units_Logo.png/220px-International_System_Of_Units_Logo.png" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/International_System_Of_Units_Logo.png/330px-International_System_Of_Units_Logo.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/11/International_System_Of_Units_Logo.png/440px-International_System_Of_Units_Logo.png 2x" data-file-width="2481" data-file-height="2481" /></a><figcaption>Unitats de basa del Sistèma Internacionau d'Unitats.</figcaption></figure> <p>Lo <b>Sistèma Internacionau d'Unitats</b> (var. <b>Sistèma Internacional d'Unitats</b>; en <a href="/wiki/Franc%C3%A9s" title="Francés">francés</a>: <i>Système International d'Unités</i>) o <b>sistèma internacionau</b> (abreujat <b>SI</b>) es lo sistèma d'<a href="/wiki/Unitat_de_mesura" title="Unitat de mesura">unitats de mesura</a> pus largament utilizat dins lo monde. L'SI es comunament nomat « sistèma metric ». A tota unitat de l'SI son associats un nom e un simbòl. Aqueu sistèma pòt èsser legalament utilizat dins <a href="/wiki/Lista_dels_pa%C3%AFses_del_mond" class="mw-redirect" title="Lista dels païses del mond">totei lei país dau monde</a>, comprés leis <a href="/wiki/Estats_Units_d%27America" title="Estats Units d'America">Estats Units</a>, e es obligatòri dins fòrça <a href="/wiki/Pa%C3%ADs" title="País">país</a>. Lei <a href="/wiki/Pa%C3%ADs" title="País">país</a> que trabalhan encara oficialament amb d'<a href="/wiki/Unitat_de_mesura" title="Unitat de mesura">unitats</a> que fan pas partida de l'SI (Estats Units, <a href="/wiki/Lib%C3%A8ria" title="Libèria">Libèria</a> e <a href="/wiki/Birmania" title="Birmania">Birmania</a>) lei definisson d'après lo Sistèma Internacionau. </p><p>L'SI foguèt adoptat per la 11<sup>a</sup> <a href="/wiki/Confer%C3%A9ncia_Generala_dei_Pes_e_Mesuras" class="mw-redirect" title="Conferéncia Generala dei Pes e Mesuras">Conferéncia Generala dei Pes e Mesuras</a> (CGPM) en <a href="/wiki/1960" class="mw-redirect" title="1960">1960</a> e compren sèt <a href="/w/index.php?title=Unitat_de_basa_dau_Sist%C3%A8ma_Internacionau&action=edit&redlink=1" class="new" title="Unitat de basa dau Sistèma Internacionau (la pagina existís pas)">unitats de basa</a>, qu'a partir d'elei se definisson divèrseis <a href="/w/index.php?title=Unitat_derivada_dau_Sist%C3%A8ma_Internacionau&action=edit&redlink=1" class="new" title="Unitat derivada dau Sistèma Internacionau (la pagina existís pas)">unitats derivadas</a>. La <a href="/wiki/N%C3%B2rma" class="mw-disambig" title="Nòrma">nòrma</a> ISO 1000 (<a href="/w/index.php?title=International_Classification_for_Standards&action=edit&redlink=1" class="new" title="International Classification for Standards (la pagina existís pas)">ICS</a> 01.060) descriu leis unitats de l'SI e lei règlas per l'usança de sei multiples e de certaneis autreis unitats. La <a href="/wiki/Confer%C3%A9ncia_Generala_dei_Pes_e_Mesuras" class="mw-redirect" title="Conferéncia Generala dei Pes e Mesuras">Conferéncia Generala dei Pes e Mesuras</a> enóncia tanben de règlas sus la <a href="/w/index.php?title=Tipografia&action=edit&redlink=1" class="new" title="Tipografia (la pagina existís pas)">tipografia</a> deis simbòls utilizats dins leis unitats de mesura. Per exemple, fau utilizar una majuscula per lei simbòls deis unitats derivadas de <a href="/wiki/Nom_pr%C3%B2pri" title="Nom pròpri">noms pròpris</a>. Vaicí un exemple d'aplicacion d'aquela règla. L'unitat de mesura de l'intensitat dau corrent electric es l'<a href="/w/index.php?title=Amp%C3%A8r_(unitat)&action=edit&redlink=1" class="new" title="Ampèr (unitat) (la pagina existís pas)">ampèr</a>, dau nom dau fisician <a href="/wiki/Andr%C3%A9-Marie_Amp%C3%A8re" title="André-Marie Ampère">André-Marie Ampère</a>, mai lo simbòl s'escriu A. La soleta excepcion es lo simbòl dau <a href="/wiki/Litre" title="Litre">litre</a>, qu'es encara tolerat (en <a href="/wiki/1990" title="1990">1990</a>) d'utilizar per simbòl la letra majuscula « L » o la letra minuscula « l »<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>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Cronologia">Cronologia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=1" title="Modificar la seccion : Cronologia" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=1" title="Edita el codi de la secció: Cronologia"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Fichi%C3%A8r:M%C3%A8tre-%C3%A9talon_Paris.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/22/M%C3%A8tre-%C3%A9talon_Paris.JPG/220px-M%C3%A8tre-%C3%A9talon_Paris.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/22/M%C3%A8tre-%C3%A9talon_Paris.JPG/330px-M%C3%A8tre-%C3%A9talon_Paris.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/22/M%C3%A8tre-%C3%A9talon_Paris.JPG/440px-M%C3%A8tre-%C3%A9talon_Paris.JPG 2x" data-file-width="3072" data-file-height="2304" /></a><figcaption>Fotografia d'un mètre de referéncia realizat en 1797 per <a href="/w/index.php?title=Jean-Fran%C3%A7ois_Chalgrin&action=edit&redlink=1" class="new" title="Jean-François Chalgrin (la pagina existís pas)">Jean-François Chalgrin</a> per presentar leis unitats novèlas a la populacion <a href="/wiki/Par%C3%ADs" class="mw-redirect" title="París">parisenca</a>.</figcaption></figure><p>Trobaretz aicí leis etapas pus importantas de l'establiment dau Sistèma Internacionau d'Unitats, de la fin dau sègle <span title="Nombre escrit en chifras romanas" style="font-variant:small-caps;">xvii</span> fins a l'ora d'ara :<br /> </p><p><b>1668</b> : temptativa de <a href="/w/index.php?title=John_Wilkins&action=edit&redlink=1" class="new" title="John Wilkins (la pagina existís pas)">John Wilkins</a> (1614-1672) d'establir d'unitats de referéncia a partir de fenomèns fisics reproductibles. Definiguèt una <a href="/w/index.php?title=Longor&action=edit&redlink=1" class="new" title="Longor (la pagina existís pas)">longor</a>, un <a href="/wiki/Volum" title="Volum">volum</a> e una <a href="/wiki/Massa" title="Massa">massa</a> de referéncia<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>. <br /> <b>1670</b> : <a href="/w/index.php?title=Gabriel_Mouton&action=edit&redlink=1" class="new" title="Gabriel Mouton (la pagina existís pas)">Gabriel Mouton</a> (1614-1694), un religiós de <a href="/wiki/Lion" title="Lion">Lion</a>, suggeriguèt d'adoptar una unitat de longor basada sus la longor d'un arc de meridian terrèstre. Definiguèt tanben lei multiples e sosmultiples d'aquela unitat. <br /> <b>1675</b> : represa dau trabalh de <a href="/w/index.php?title=John_Wilkins&action=edit&redlink=1" class="new" title="John Wilkins (la pagina existís pas)">John Wilkins</a> per lo sabent italian <a href="/w/index.php?title=Tito_Livio_Burattini&action=edit&redlink=1" class="new" title="Tito Livio Burattini (la pagina existís pas)">Tito Livio Burattini</a> (1617-1681). Calculèt pus precisament son unitat de longor e la trobèt egala a 993,7 mm. Li donèt lo nom de « <a href="/wiki/M%C3%A8tre" title="Mètre">mètre</a> »<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. <br /> <b>1790</b> : sota lei conseus de <a href="/w/index.php?title=Charles-Maurice_de_Talleyrand-P%C3%A9rigord&action=edit&redlink=1" class="new" title="Charles-Maurice de Talleyrand-Périgord (la pagina existís pas)">Talleyrand</a> e de <a href="/wiki/Nicolas_de_Condorcet" title="Nicolas de Condorcet">Condorcet</a>, l'<a href="/wiki/Assemblada_Nacionala" title="Assemblada Nacionala">Assemblada Nacionala</a> decidèt d'adoptar un sistèma d'unitats estable, unifòrme e simple per remplaçar leis <a href="/w/index.php?title=Unitats_de_mesura_dau_Regim_Ancian&action=edit&redlink=1" class="new" title="Unitats de mesura dau Regim Ancian (la pagina existís pas)">unitats de mesura dau Regim Ancian</a>. </p><p><b>1793</b> : adopcion dau sistèma metric provisòri per la <a href="/w/index.php?title=Convencion_Nacionala&action=edit&redlink=1" class="new" title="Convencion Nacionala (la pagina existís pas)">Convencion Nacionala</a> (1<sup>èr</sup> d'aost). <br /> <b>1799</b> : adopcion dau sistèma metric definiu (22 de junh). Lei dos escandaus de platin representant lo <a href="/wiki/M%C3%A8tre" title="Mètre">mètre</a> e lo <a href="/wiki/Quilograma" title="Quilograma">quilograma</a> (aquest aviá per nom originau lo grave) son depausats ais <a href="/w/index.php?title=Archius_Nacionaus_franc%C3%A9s&action=edit&redlink=1" class="new" title="Archius Nacionaus francés (la pagina existís pas)">Archius Nacionaus francés</a>. <br /> <b>1832</b> : definicion dau sistèma metric de <a href="/wiki/Carl_Friedrich_Gauss" title="Carl Friedrich Gauss">Gauss</a>, un sistèma decimau fondat sus lei tres unitats de la mecanica dau periòde : lo <a href="/wiki/M%C3%A8tre" title="Mètre">millimètre</a>, lo <a href="/wiki/Quilograma" title="Quilograma">grama</a> e la <a href="/wiki/Segonda" title="Segonda">segonda</a>. <br /> <b>1874</b> : introduccion dau <a href="/wiki/Sist%C3%A8ma_CGS" title="Sistèma CGS">sistèma CGS</a> per la <i><a href="/w/index.php?title=British_Association_for_the_Advancement_of_Science&action=edit&redlink=1" class="new" title="British Association for the Advancement of Science (la pagina existís pas)">British Association for the Advancement of Science</a></i>. Èra fondat sus lo <a href="/wiki/Centim%C3%A8tre" class="mw-redirect" title="Centimètre">centimètre</a>, lo <a href="/wiki/Grama" title="Grama">grama</a> e la <a href="/wiki/Segonda" title="Segonda">segonda</a>. <br /> <b>1875</b> : signatura de la <a href="/w/index.php?title=Convencion_dau_M%C3%A8tre&action=edit&redlink=1" class="new" title="Convencion dau Mètre (la pagina existís pas)">Convencion dau Mètre</a> destinada a assegurar l'unificacion e lo perfeccionament dau sistèma metric. Entraïnèt la creacion dau <a href="/wiki/Bur%C3%A8u_Internacionau_dei_Pes_e_Mesuras" title="Burèu Internacionau dei Pes e Mesuras">Burèu Internacionau dei Pes e Mesuras</a>. <br /> <b>1946</b> : aprobacion dau <a href="/w/index.php?title=Sist%C3%A8ma_MKSA&action=edit&redlink=1" class="new" title="Sistèma MKSA (la pagina existís pas)">sistèma MKSA</a> per lo <a href="/w/index.php?title=Comitat_Internacionau_dei_Pes_e_Mesuras&action=edit&redlink=1" class="new" title="Comitat Internacionau dei Pes e Mesuras (la pagina existís pas)">Comitat Internacionau</a>. Lo sistèma èra fondat sus lo <a href="/wiki/M%C3%A8tre" title="Mètre">mètre</a> (m), lo <a href="/wiki/Quilograma" title="Quilograma">quilograma</a> (k), la <a href="/wiki/Segonda" title="Segonda">segonda</a> (s) e l'<a href="/wiki/Amp%C3%A8r" title="Ampèr">ampèr</a> (A). <br /> <b>1954</b> : la 10<sup>a</sup> <a href="/wiki/Confer%C3%A9ncia_Generala_dei_Pes_e_Mesuras" class="mw-redirect" title="Conferéncia Generala dei Pes e Mesuras">CGPM</a> aprovèt l'introduccion de l'<a href="/wiki/Amp%C3%A8r" title="Ampèr">ampèr</a>, dau <a href="/wiki/Kelvin" title="Kelvin">kelvin</a> e de la <a href="/wiki/Cand%C3%A8la" title="Candèla">candèla</a> per <a href="/w/index.php?title=Unitats_de_basa&action=edit&redlink=1" class="new" title="Unitats de basa (la pagina existís pas)">unitats de basa</a>. <br /> <b>1960</b> : la 11<sup>a</sup> CGPM donèt lo nom de « Sistèma Internacionau d'Unitats » au sistèma metric decimau <br /> <b>1971</b> : la 14<sup>a</sup> CGPM apondèt la <a href="/wiki/M%C3%B2l_(unitat)" title="Mòl (unitat)">mòl</a> per unitat de basa de l'SI, portant a sèt en tot lo nombre d'unitats de basa. <br /> <b>2019</b> : reformas de la definicion deis unitats fondamentalas que son desenant fondadas sus de <a href="/w/index.php?title=Constanta_fisica&action=edit&redlink=1" class="new" title="Constanta fisica (la pagina existís pas)">constantas fisicas</a> fondamentalas coma la <a href="/wiki/Velocitat_de_la_lutz" title="Velocitat de la lutz">velocitat de la lutz</a>, la <a href="/wiki/Constanta_de_Planck" title="Constanta de Planck">constanta de Planck</a> o lo <a href="/wiki/Nombre_d%27Avogadro" title="Nombre d'Avogadro">nombre d'Avogadro</a>. </p> <div class="mw-heading mw-heading2"><h2 id="La_nòrma_dau_Sistèma_Internacionau_d'Unitats:_règlas_generalas_d'escritura_deis_unitats,_dei_simbòls_e_dei_nombres"><span id="La_n.C3.B2rma_dau_Sist.C3.A8ma_Internacionau_d.27Unitats:_r.C3.A8glas_generalas_d.27escritura_deis_unitats.2C_dei_simb.C3.B2ls_e_dei_nombres"></span>La nòrma dau Sistèma Internacionau d'Unitats: règlas generalas d'escritura deis unitats, dei simbòls e dei nombres</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=2" title="Modificar la seccion : La nòrma dau Sistèma Internacionau d'Unitats: règlas generalas d'escritura deis unitats, dei simbòls e dei nombres" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=2" title="Edita el codi de la secció: La nòrma dau Sistèma Internacionau d'Unitats: règlas generalas d'escritura deis unitats, dei simbòls e dei nombres"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Generalitats">Generalitats</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=3" title="Modificar la seccion : Generalitats" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=3" title="Edita el codi de la secció: Generalitats"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Fichi%C3%A8r:Metre_Convention_Signatories.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Metre_Convention_Signatories.svg/220px-Metre_Convention_Signatories.svg.png" decoding="async" width="220" height="112" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Metre_Convention_Signatories.svg/330px-Metre_Convention_Signatories.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Metre_Convention_Signatories.svg/440px-Metre_Convention_Signatories.svg.png 2x" data-file-width="2754" data-file-height="1398" /></a><figcaption>País signataris de la <a href="/w/index.php?title=Convencion_dau_M%C3%A8tre&action=edit&redlink=1" class="new" title="Convencion dau Mètre (la pagina existís pas)">Convencion dau Mètre</a> : membres actuaus dau BIPM (roge sorn), membres associats (roge clar), èx-membres (verd sorn), èx-membres associats (verd clar).</figcaption></figure> <p>Lo Sistèma Internacionau d'Unitats es descrich per l'ensemble de <a href="/w/index.php?title=N%C3%B2rma_internacionala&action=edit&redlink=1" class="new" title="Nòrma internacionala (la pagina existís pas)">nòrmas internacionalas</a> <a href="/w/index.php?title=ISO/CEI_80000&action=edit&redlink=1" class="new" title="ISO/CEI 80000 (la pagina existís pas)">ISO/CEI 80000</a>. La definicion deis unitats fondamentalas es assegurada per lo <a href="/wiki/Bur%C3%A8u_Internacionau_dei_Pes_e_Mesuras" title="Burèu Internacionau dei Pes e Mesuras">Burèu Internacionau dei Pes e Mesuras</a> (BIPM) qu'es l'organ encargat de metre en òbra lei decisions presas per la <a href="/wiki/Confer%C3%A9ncia_Generala_dei_Pes_e_Mesuras" class="mw-redirect" title="Conferéncia Generala dei Pes e Mesuras">Conferéncia Generala dei Pes e Mesuras</a>, l'assemblada decisionala de la <a href="/w/index.php?title=Convencion_dau_M%C3%A8tre&action=edit&redlink=1" class="new" title="Convencion dau Mètre (la pagina existís pas)">Convencion dau Mètre</a>. En causa dau ròtle significatiu tengut per <a href="/wiki/Fran%C3%A7a" title="França">França</a> dins l'establiment dau Sistèma Internacionau, lo <a href="/wiki/Franc%C3%A9s" title="Francés">francés</a> es encara la <a href="/wiki/Lenga_oficiala" title="Lenga oficiala">lenga oficiala</a> dau BIPM<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>. Pasmens, existís de <a href="/wiki/Traduccion" title="Traduccion">traduccions</a> dins abòrd de <a href="/wiki/Lenga" title="Lenga">lengas</a> (<a href="/wiki/Alemand" title="Alemand">alemand</a>, <a href="/wiki/Angl%C3%A9s" title="Anglés">anglés</a>, <a href="/wiki/Castelhan" class="mw-redirect" title="Castelhan">castelhan</a>, <a href="/wiki/Chin%C3%A9s" title="Chinés">chinés</a>, <a href="/wiki/Japon%C3%A9s" title="Japonés">japonés</a>, <a href="/wiki/Portugu%C3%A9s" title="Portugués">portugués</a>, etc.). </p><p>Aquelei nòrmas son en vigor dins fòrça país, en particular aquelei de l'<a href="/wiki/Union_Europ%C3%A8a" title="Union Europèa">Union Europèa</a>. Son independentas de la lenga (la soleta excepcion es lo separator decimau, virgula o ponch segon lei país). Fau notar, en particular : </p> <ul><li>L'unicitat (e l'invariabilitat gramaticala) dei simbòls que representan leis unitats de mesura. Fau ben destriar lo nom de l'unitat (dependent de la lenga) de son simbòl. Per exemple : <ul><li>"km" notarà, segon la lenga : <i>kilometre</i> o <i>kilometer</i> (anglés), <i>kilómetro</i> (castelhan), <i>quilòmetre</i> (catalan), <i>kilomètre</i> (francés), <i>chilometro</i> (italian), <i>quilomètre</i> (occitan), etc.</li> <li>"h" notarà, segon la lenga : <i>hour</i> (anglés), <i>hora</i> (castelhan e catalan), <i>heure</i> (francés), <i>ora</i> (italian e occitan), etc.</li></ul></li> <li>D'après la 9<sup>a</sup> Conferéncia generala (1948, Resolucion 7) e la 22<sup>a</sup> Conferéncia generala (2003, Resolucion 10), lei nombres "lòngs" pòdon (facultativament) èsser partejats en grops de 3 <a href="/wiki/Chifra" title="Chifra">chifras</a>, separats per d'espacis insecables, jamai per de ponchs. <ul><li>Per exemple, s'escriu : 1 234 567 o 1234567 mai pas 1.234.567.</li></ul></li></ul> <div class="mw-heading mw-heading3"><h3 id="Leis_unitats_fondamentalas">Leis unitats fondamentalas</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=4" title="Modificar la seccion : Leis unitats fondamentalas" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=4" title="Edita el codi de la secció: Leis unitats fondamentalas"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Fichi%C3%A8r:SI_base_unit.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/SI_base_unit.svg/220px-SI_base_unit.svg.png" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/SI_base_unit.svg/330px-SI_base_unit.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c8/SI_base_unit.svg/440px-SI_base_unit.svg.png 2x" data-file-width="600" data-file-height="600" /></a><figcaption>Representacion deis interdependéncias entre leis unitats de basa dau SI.</figcaption></figure> <div class="mw-heading mw-heading4"><h4 id="Lo_mètre"><span id="Lo_m.C3.A8tre"></span>Lo mètre</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=5" title="Modificar la seccion : Lo mètre" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=5" title="Edita el codi de la secció: Lo mètre"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="bandeau-section bandeau-niveau-detail general">Article principal : <a href="/wiki/M%C3%A8tre" title="Mètre">Mètre</a>.</div> <p>Lo <a href="/wiki/M%C3%A8tre" title="Mètre">mètre</a>, de simbòl m, es l'unitat fondamentala de <a href="/w/index.php?title=Longor&action=edit&redlink=1" class="new" title="Longor (la pagina existís pas)">longor</a>. Premiera unitat dau sistèma metric iniciau, sa definicion es estada l'objècte de fòrça transformacions. D'efiech, a l'origina, entre 1791 e 1792, foguèt definit coma la 10 000 000<sup>a</sup> partida de la mitat d'un <a href="/wiki/Meridian" title="Meridian">meridian</a> <a href="/wiki/T%C3%A8rra" title="Tèrra">terrèstre</a><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>. Adoptada per la <a href="/w/index.php?title=Convencion_Nacionala&action=edit&redlink=1" class="new" title="Convencion Nacionala (la pagina existís pas)">Convencion Nacionala</a>, aquela definicion se difusèt amb l'avançada deis armadas revolucioniàrias. Aquò entraïnèt l'organizacion de recèrcas e d'experiéncias per mesurar d'un biais precís la longor d'un meridian. </p><p>Pasmens, la precision foguèt jutjada insufisenta. En 1889, la <a href="/wiki/Confer%C3%A9ncia_Generala_dei_Pes_e_Mesuras" class="mw-redirect" title="Conferéncia Generala dei Pes e Mesuras">Conferéncia Generala dei Pes e Mesuras</a> decidèt d'adoptar una definicion novèla basada sus la mesura entre dos ponchs traçats sus una barra <a href="/wiki/Metal" title="Metal">metallica</a> compausada d'un <a href="/wiki/Aliatge" title="Aliatge">aliatge</a> de <a href="/wiki/Platin" title="Platin">platin</a> e d'<a href="/wiki/Iridi" title="Iridi">iridi</a>. Aquò permetèt d'obtenir una definicion amb una precision de 10<small><sup>-7</sup></small> (còntra 10<small><sup>-4</sup></small> amb la definicion precedenta). Trenta exemplaris de barra foguèron fabricats e donats ai país membres dau <a href="/wiki/Bur%C3%A8u_Internacionau_dei_Pes_e_Mesuras" title="Burèu Internacionau dei Pes e Mesuras">Burèu Internacionau dei Pes e Mesuras</a>. De progrès importants en matèria de <a href="/w/index.php?title=Metrologia&action=edit&redlink=1" class="new" title="Metrologia (la pagina existís pas)">metrologia</a> permetèron de realizar de comparasons entre aquelei còpias e lo mètre de referéncia. </p><p>Dins aquò, l'usatge d'<a href="/w/index.php?title=Etalon_(metrologia)&action=edit&redlink=1" class="new" title="Etalon (metrologia) (la pagina existís pas)">etalons</a> materiaus èra totjorn una fònt de problemas per lei scientifics. En 1960, foguèt donc decidit d'adoptar una definicion basada sus un fenomèn dematerializat. Una premiera etapa foguèt de definir lo mètre coma egau a 1 650 763,73 <a href="/wiki/Longor_d%27onda" title="Longor d'onda">longors d'onda</a> dins lo vuege de la radiacion que correspònd a la transicion entre lei nivèus 2p10 e 5d5 de l'<a href="/wiki/At%C3%B2m" title="Atòm">atòm</a> de <a href="/wiki/Cripton" title="Cripton">cripton-86</a>. Puei, en 1983, lo mètre venguèt la longor percorrut dins lo vuege per la <a href="/wiki/Lutz" title="Lutz">lutz</a> durant una durada de 1/299 792 458 <a href="/wiki/Segonda" title="Segonda">s</a>. </p> <div class="mw-heading mw-heading4"><h4 id="Lo_quilograma">Lo quilograma</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=6" title="Modificar la seccion : Lo quilograma" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=6" title="Edita el codi de la secció: Lo quilograma"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="bandeau-section bandeau-niveau-detail general">Article principal : <a href="/wiki/Quilograma" title="Quilograma">Quilograma</a>.</div> <p>Lo <a href="/wiki/Quilograma" title="Quilograma">quilograma</a>, de simbòl kg, es l'unitat fondamentala de <a href="/wiki/Massa" title="Massa">massa</a>. Es un derivat dau <a href="/wiki/Grama" title="Grama">grama</a> que foguèt creat en 1795 per la <a href="/wiki/Revolucion_Francesa" title="Revolucion Francesa">França Revolucionària</a>. Unitat iniciala dau sistèma metric, lo grama foguèt premier definit coma la massa d'un centimètre cubic d'<a href="/wiki/Aiga" title="Aiga">aiga</a> pura a 4 °C. Pasmens, lei necessitats practicas dau <a href="/wiki/Com%C3%A8rci" title="Comèrci">comèrci</a> demandèron lèu l'adopcion d'una unitat pus pesuca e lo <a href="/wiki/Quilograma" title="Quilograma">quilograma</a> s'impausèt durant la segonda mitat deis ans 1790. En 1799, lo premier etalon de massa reconegut foguèt ansin una massa de <a href="/wiki/Platin" title="Platin">platin</a> que correspondiá a un <a href="/wiki/Volum" title="Volum">volum</a> de 1,000 025 L d'<a href="/wiki/Aiga" title="Aiga">aiga</a> pura. </p><p>En 1875, durant la formalizacion dau sistèma metric, lo quilograma venguèt oficialament l'unitat fondamentala de <a href="/wiki/Massa" title="Massa">massa</a>. En 1879, un etalon novèu foguèt fabricat e adoptat après divèrsei mesuras que permetèron de considerar sa massa coma indiferenciabla d'aquela de l'etalon istoric. De còpias de l'etalon de referéncia foguèron tanben fabricadas per realizar de verificacions e provesir d'etalons nacionaus a cada país signataris de la <a href="/w/index.php?title=Convencion_dau_M%C3%A8tre&action=edit&redlink=1" class="new" title="Convencion dau Mètre (la pagina existís pas)">Convencion dau Mètre</a>. </p><p>Aquel usatge d'un etalon materiau durèt durant tot lo sègle <span title="Nombre escrit en chifras romanas" style="font-variant:small-caps;">xx</span> sensa contentar lo <a href="/wiki/Bur%C3%A8u_Internacionau_dei_Pes_e_Mesuras" title="Burèu Internacionau dei Pes e Mesuras">Burèu Internacionau dei Pes e Mesuras</a>. Entre 2005 e 2019, diferents trabalhs foguèron donc menats per trobar una definicion novèla basada sus la <a href="/wiki/Constanta_de_Planck" title="Constanta de Planck">constanta de Planck</a>. Lor conclusion aguèt luòc amb l'adopcion d'una definicion fondada sus la mesura d'aquela constanta per lo mejan d'una <a href="/w/index.php?title=Balan%C3%A7a_de_Kibble&action=edit&redlink=1" class="new" title="Balança de Kibble (la pagina existís pas)">balança de Kibble</a>. </p> <div class="mw-heading mw-heading4"><h4 id="La_segonda">La segonda</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=7" title="Modificar la seccion : La segonda" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=7" title="Edita el codi de la secció: La segonda"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="bandeau-section bandeau-niveau-detail general">Article principal : <a href="/wiki/Segonda" title="Segonda">Segonda</a>.</div> <p>La <a href="/wiki/Segonda" title="Segonda">segonda</a>, de simbòl s, es l'unitat fondamentala de <a href="/wiki/Temps" title="Temps">temps</a>. Eissida d'una tradicion anciana de division dau <a href="/wiki/Temps" title="Temps">temps</a> segon una basa 60, foguèt definida en 1889 coma la fraccion 1⁄86400 dau <a href="/wiki/Jorn" title="Jorn">jorn</a> solar terrèstre mejan. Pasmens, en causa dei progrès de l'<a href="/wiki/Astronomia" title="Astronomia">astronomia</a> e dei <a href="/wiki/Tecnologia" title="Tecnologia">tecnologias</a>, aquela definicion foguèt l'objècte de fòrça modificacions durant lo sègle <span title="Nombre escrit en chifras romanas" style="font-variant:small-caps;">xx</span>. En 1956, la segonda venguèt donc la fraccion 1/31.556.925,9757 de l'annada tropica 1900. Puei, amb lei progrès dei <a href="/wiki/Rel%C3%B2tge_atomic" title="Relòtge atomic">relòtges atomics</a>, la definicion contunièt d'evolucionar. En 1967, foguèt desenant definida a partir de la valor numerica fixada de la frequéncia dau cèsi, ΔνCs, e de la frequéncia de la transicion iperfina de l'estat fondamentau de l'atòm de cèsi-133 non trebolat, egala a 9 192 631 770 Hz, segon la relacion<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> : </p> <dl><dd><center><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 {s} ={\frac {9\,192\,631\,770}{\Delta \nu _{\mathrm {Cs} }}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>1</mn> <mspace width="thickmathspace" /> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">s</mi> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>9</mn> <mspace width="thinmathspace" /> <mn>192</mn> <mspace width="thinmathspace" /> <mn>631</mn> <mspace width="thinmathspace" /> <mn>770</mn> </mrow> <mrow> <mi mathvariant="normal">Δ</mi> <msub> <mi>ν</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">C</mi> <mi mathvariant="normal">s</mi> </mrow> </mrow> </msub> </mrow> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 1\;\mathrm {s} ={\frac {9\,192\,631\,770}{\Delta \nu _{\mathrm {Cs} }}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/d618fbee348dd22900423dce74dde8e9fa977cce" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:19.444ex; height:5.676ex;" alt="{\displaystyle 1\;\mathrm {s} ={\frac {9\,192\,631\,770}{\Delta \nu _{\mathrm {Cs} }}}}"></span></center></dd></dl> <p>Enfin, en 1997, foguèt precisat que la <a href="/wiki/Temperatura" title="Temperatura">temperatura</a> de l'atòm de cèsi-133 considerat es de 0 K. </p> <div class="mw-heading mw-heading4"><h4 id="L'ampèr"><span id="L.27amp.C3.A8r"></span>L'ampèr</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=8" title="Modificar la seccion : L'ampèr" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=8" title="Edita el codi de la secció: L'ampèr"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="bandeau-section bandeau-niveau-detail general">Article principal : <a href="/wiki/Amp%C3%A8r" title="Ampèr">Ampèr</a>.</div> <p>L'<a href="/wiki/Amp%C3%A8r" title="Ampèr">ampèr</a>, de simbòl A, es l'unitat fondamentala de l'<a href="/w/index.php?title=Intensitat_electrica&action=edit&redlink=1" class="new" title="Intensitat electrica (la pagina existís pas)">intensitat electrica</a>. Un <a href="/wiki/Corrent_electric" title="Corrent electric">corrent</a> d'un <a href="/wiki/Amp%C3%A8r" title="Ampèr">ampèr</a> correspònd au transpòrt d'una <a href="/wiki/Carga_electrica" title="Carga electrica">carga electrica</a> d'un <a href="/wiki/Coulomb" title="Coulomb">coulomb</a> per <a href="/wiki/Segonda" title="Segonda">segonda</a> a travèrs un materiau. L'unitat foguèt adoptada en 1881 en onor dau fisician <a href="/wiki/Andr%C3%A9-Marie_Amp%C3%A8re" title="André-Marie Ampère">André-Marie Ampère</a> (1775-1836). Sa premiera definicion èra fòrça limitada : lo desen de l'unitat d'<a href="/w/index.php?title=Intensitat_electrica&action=edit&redlink=1" class="new" title="Intensitat electrica (la pagina existís pas)">intensitat</a> dau <a href="/w/index.php?title=Sist%C3%A8ma_GCS&action=edit&redlink=1" class="new" title="Sistèma GCS (la pagina existís pas)">sistèma GCS</a>. </p><p>En 1948, foguèt donc adoptada una definicion novèla e pus precisa. Un <a href="/wiki/Amp%C3%A8r" title="Ampèr">ampèr</a> venguèt egau a l'intensitat d'un <a href="/wiki/Corrent_electric" title="Corrent electric">corrent electric</a> constant que, s'es mantengut entre dos <a href="/w/index.php?title=Conduccion_electrica&action=edit&redlink=1" class="new" title="Conduccion electrica (la pagina existís pas)">conductors</a> linears e parallèls, de longors infinidas, de seccions negligiblas e separats per una distància d'un <a href="/wiki/M%C3%A8tre" title="Mètre">mètre</a>, produtz entre aquelei dos conductors una <a href="/w/index.php?title=F%C3%B2r%C3%A7a_lineara&action=edit&redlink=1" class="new" title="Fòrça lineara (la pagina existís pas)">fòrça lineara</a> egala a 2.10<sup><small>-7</small></sup> <a href="/wiki/Newton" class="mw-disambig" title="Newton">newton</a> per <a href="/wiki/M%C3%A8tre" title="Mètre">mètre</a>. Pasmens, aquela definicion resistiguèt pas, au començament dau sègle <span title="Nombre escrit en chifras romanas" style="font-variant:small-caps;">xxi</span>, a la volontat dau BIPM d'adoptar de definicions basadas sus de <a href="/w/index.php?title=Constanta_fisica&action=edit&redlink=1" class="new" title="Constanta fisica (la pagina existís pas)">constantas fisicas</a>. Dempuei 2019, l'ampèr es donc definit a partir de la <a href="/w/index.php?title=Carga_element%C3%A0ria&action=edit&redlink=1" class="new" title="Carga elementària (la pagina existís pas)">carga elementària</a> <i>e</i>. </p> <div class="mw-heading mw-heading4"><h4 id="Lo_kelvin">Lo kelvin</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=9" title="Modificar la seccion : Lo kelvin" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=9" title="Edita el codi de la secció: Lo kelvin"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="bandeau-section bandeau-niveau-detail general">Article principal : <a href="/wiki/Kelvin" title="Kelvin">Kelvin</a>.</div> <p>Lo <a href="/wiki/Kelvin" title="Kelvin">kelvin</a>, de simbòl K, es l'unitat fondamentala de <a href="/wiki/Temperatura" title="Temperatura">temperatura</a>. Foguèt creat en 1948 per la <a href="/w/index.php?title=Convencion_Generala_dei_Pes_e_Mesuras&action=edit&redlink=1" class="new" title="Convencion Generala dei Pes e Mesuras (la pagina existís pas)">Convencion Generala dei Pes e Mesuras</a> en onor de <a href="/wiki/William_Thomson,_Lord_Kelvin" title="William Thomson, Lord Kelvin">William Thomson, lord Kelvin</a> (1824-1907). Foguèt definit coma la fraccion 1/273,16 dau <a href="/wiki/Ponch_triple" title="Ponch triple">ponch triple</a> de l'<a href="/wiki/Aiga" title="Aiga">aiga</a>, una variacion d'un kelvin essent egala a una variacion d'un <a href="/w/index.php?title=Gra_celsius&action=edit&redlink=1" class="new" title="Gra celsius (la pagina existís pas)">gra celsius</a>. Son origina es lo <a href="/wiki/Z%C3%A8ro_absolut" title="Zèro absolut">zèro absolut</a>, es a dire la <a href="/wiki/Temperatura" title="Temperatura">temperatura</a> teorica d'aplant dau <a href="/w/index.php?title=Movement_brownian&action=edit&redlink=1" class="new" title="Movement brownian (la pagina existís pas)">movement brownian</a> (o <a href="/w/index.php?title=Agitacion_termica&action=edit&redlink=1" class="new" title="Agitacion termica (la pagina existís pas)">agitacion termica</a>) dei particulas elementàrias. Pasmens, aquela definicion foguèt cambiada en 2019 per liar lo <a href="/wiki/Kelvin" title="Kelvin">kelvin</a> a una constanta fisica fondamentala. Uei, lo <a href="/wiki/Kelvin" title="Kelvin">kelvin</a> correspònd donc au cambiament de <a href="/wiki/Temperatura" title="Temperatura">temperatura</a> <a href="/wiki/Termodinamica" title="Termodinamica">termodinamica</a> que resulta d'un cambiament de l'energia termica <i>kT</i> de 1,380 649.10<small><sup>-23</sup></small> J. </p> <div class="mw-heading mw-heading4"><h4 id="La_candèla"><span id="La_cand.C3.A8la"></span>La candèla</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=10" title="Modificar la seccion : La candèla" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=10" title="Edita el codi de la secció: La candèla"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="bandeau-section bandeau-niveau-detail general">Article principal : <a href="/wiki/Cand%C3%A8la" title="Candèla">Candèla</a>.</div> <p>La <a href="/wiki/Cand%C3%A8la" title="Candèla">candèla</a>, de simbòl cd, es l'unitat fondamentala de l'<a href="/w/index.php?title=Intensitat_luminosa&action=edit&redlink=1" class="new" title="Intensitat luminosa (la pagina existís pas)">intensitat luminosa</a>. Foguèt creada en 1946 per lo CIPM a partir de la <a href="/w/index.php?title=Bogia_(unitat)&action=edit&redlink=1" class="new" title="Bogia (unitat) (la pagina existís pas)">bogia</a>, l'unitat <a href="/wiki/Ist%C3%B2ria" title="Istòria">istorica</a>. D'efiech, aquela unitat aviá una definicion variabla segon lei <a href="/wiki/Pa%C3%ADs" title="País">país</a>. La premiera definicion foguèt inspirada d'aquela de la <a href="/w/index.php?title=Bogia_(unitat)&action=edit&redlink=1" class="new" title="Bogia (unitat) (la pagina existís pas)">bogia novèla</a>. Una candèla foguèt ansin egala a la brilhància dau radiator integrau a la temperatura de solidificacion dau <a href="/wiki/Platin" title="Platin">platin</a>, siá 60 bogias novèlas per centimètre carrat. </p><p>Aquela definicion evolucionèt en 1967 amb l'abandon definitiu de la <a href="/w/index.php?title=Bogia_(unitat)&action=edit&redlink=1" class="new" title="Bogia (unitat) (la pagina existís pas)">bogia</a>. La candèla venguèt l'<a href="/w/index.php?title=Intensitat_luminosa&action=edit&redlink=1" class="new" title="Intensitat luminosa (la pagina existís pas)">intensitat luminosa</a>, dins la <a href="/w/index.php?title=Direccion&action=edit&redlink=1" class="new" title="Direccion (la pagina existís pas)">direccion</a> <a href="/w/index.php?title=Perpendicular&action=edit&redlink=1" class="new" title="Perpendicular (la pagina existís pas)">perpendiculara</a>, d'una superficia de 1/600 000 mètre carrat d'un <a href="/wiki/C%C3%B2rs_negre" title="Còrs negre">còrs negre</a> a la temperatura de congelacion dau <a href="/wiki/Platin" title="Platin">platin</a> sota la <a href="/wiki/Pression" title="Pression">pression</a> de 101 325 <a href="/w/index.php?title=Pascal&action=edit&redlink=1" class="new" title="Pascal (la pagina existís pas)">pascals</a>. Pasmens, aquel enonciat foguèt pas jutjat satisfasent en causa de la manca de precision de la mesura. Foguèt donc tornarmai modificat en 1979 e la candèla venguèt alora l'intensitat luminosa, dins una direccion donada, d'una <a href="/w/index.php?title=F%C3%B2nt&action=edit&redlink=1" class="new" title="Fònt (la pagina existís pas)">fònt</a> qu'emet un raionament monocromatic de <a href="/wiki/Frequ%C3%A9ncia" title="Frequéncia">frequéncia</a> 540.10<sup><small>12</small></sup> <a href="/wiki/Hertz" title="Hertz">hertzs</a> e d'intensitiat energetica, dins aquela direccion, de 1/683 watt per steradian. </p><p>Coma per leis autreis unitats fondamentalas, lo BIPM adoptèt una definicion basada sus una constanta fondamentala en 2019. La candèla es desenant la valor numerica fixada de l'eficacitat luminosa d'un raionament monocromatic de frequéncia 540.10<sup><small>12</small></sup> <a href="/wiki/Hertz" title="Hertz">hertzs</a>, produch per la transicion iperfica de l'atòm de <a href="/wiki/C%C3%A8si" title="Cèsi">cèsi</a>-133 dins son estat fondamentau non trebolat, egala a 683 quand es exprimida en lm.W<sup><small>-1</small></sup> o en cd.sr.kg<small><sup>-1</sup></small>.m<small><sup>-2</sup></small>.s<small><sup>3</sup></small>. Aquela definicion permet de liar la candèla a la <a href="/wiki/Constanta_de_Planck" title="Constanta de Planck">constanta de Planck</a> e a la <a href="/wiki/Velocitat_de_la_lutz" title="Velocitat de la lutz">velocitat de la lutz</a>. </p> <div class="mw-heading mw-heading4"><h4 id="Lo_mòl"><span id="Lo_m.C3.B2l"></span>Lo mòl</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=11" title="Modificar la seccion : Lo mòl" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=11" title="Edita el codi de la secció: Lo mòl"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="bandeau-section bandeau-niveau-detail general">Article principal : <a href="/wiki/M%C3%B2l" class="mw-redirect mw-disambig" title="Mòl">Mòl</a>.</div> <p>Lo <a href="/wiki/M%C3%B2l" class="mw-redirect mw-disambig" title="Mòl">mòl</a>, de simbòl mol, es l'unitat fondamentala de la <a href="/w/index.php?title=Quantitat_de_mat%C3%A8ria&action=edit&redlink=1" class="new" title="Quantitat de matèria (la pagina existís pas)">quantitat de matèria</a>. Eissit dei premiers trabalhs sus lo calcul dei pes atomics, foguèt imaginat per lo quimista alemand <a href="/wiki/Wilhelm_Ostwald" title="Wilhelm Ostwald">Wilhelm Ostwald</a> (1853-1932) en 1894. Lèu traduch dins d'autrei <a href="/wiki/Lenga" title="Lenga">lengas</a> avans la fin deis ans 1890, lo tèrme « mòl » permetèt a la quantitat de matèria de remplaçar la nocion de pes equivalent dins lei calculs de massa moleculara. La premiera definicion dau mòl èra basada sus la massa de l'<a href="/wiki/Oxig%C3%A8n" title="Oxigèn">oxigèn</a>-16. </p><p>Dins leis <a href="/wiki/Ans_1960" title="Ans 1960">ans 1960</a>, aquela definicion foguèt cambiada per adoptar lo <a href="/wiki/Carb%C3%B2ni" title="Carbòni">carbòni</a>-12 coma basa. Lo BIPM definiguèt lo mòl coma lo nombre d'<a href="/wiki/At%C3%B2m" title="Atòm">atòms</a> contenguts dins una mòstra de 0,012 kg de <a href="/wiki/Carb%C3%B2ni" title="Carbòni">carbòni</a>-12. En 1971, lo mòl foguèt adoptat coma unitat fondamentala dau Sistèma Internacionau. En consequéncia, la massa d'un mòl venguèt egala a aquela de 12 g de <a href="/wiki/Carb%C3%B2ni" title="Carbòni">carbòni</a>-12. </p><p>Aquela definicion demorèt en vigor fins a l'adopcion de definicions novèlas, fondadas sus de <a href="/w/index.php?title=Constanta_fisica&action=edit&redlink=1" class="new" title="Constanta fisica (la pagina existís pas)">constantas fisicas</a> fondamentalas, en 2019. Dins aqueu quadre, lo mòl foguèt definit a partir dau <a href="/wiki/Nombre_d%27Avogadro" title="Nombre d'Avogadro">nombre d'Avogadro</a>. Un mòl d'una <a href="/wiki/Compausat_quimic" title="Compausat quimic">substància quimica</a> foguèt desenant la quantitat contenent exactament 6,02 214 076.10<sup><small>23</small></sup> entitats elementàrias d'aquela substància. </p> <div class="mw-heading mw-heading3"><h3 id="Leis_unitats_derivadas">Leis unitats derivadas</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=12" title="Modificar la seccion : Leis unitats derivadas" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=12" title="Edita el codi de la secció: Leis unitats derivadas"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Leis unitats derivadas dau Sistèma Internacionau son formadas per lei poissanças, lei produchs e lei quocients deis unitats de basa. N'existís potencialament una <a href="/w/index.php?title=Infinitat&action=edit&redlink=1" class="new" title="Infinitat (la pagina existís pas)">infinitat</a>. Leis unitats derivadas son associadas a de grandors derivadas. Per exemple, la <a href="/wiki/Velocitat" title="Velocitat">velocitat</a> es una <a href="/wiki/Grandor_fisica" title="Grandor fisica">grandor</a> derivada dau <a href="/wiki/Temps" title="Temps">temps</a> e de la <a href="/w/index.php?title=Longor&action=edit&redlink=1" class="new" title="Longor (la pagina existís pas)">longor</a>. Son unitat SI es donc lo mètre per segonda, de simbòl m.s<sup><small>-1</small></sup>. Certaneis unitats derivadas pòrtan de noms pròpris. Per exemple, es lo cas dau <a href="/wiki/Newton" class="mw-disambig" title="Newton">newton</a>, l'unitat SI de la <a href="/wiki/F%C3%B2r%C3%A7a" title="Fòrça">fòrça</a> qu'es egala a 1 kg.m.s<sup><small>-2</small></sup>, o dau <a href="/wiki/Pascal_(unitat)" title="Pascal (unitat)">pascal</a>, l'unitat SI de la <a href="/wiki/Pression" title="Pression">pression</a> qu'es egala 1 kg.m<sup><small>-1</small></sup>.s<sup><small>-2</small></sup>. Aqueleis unitats derivadas son de còps utilizadas per exprimir d'autreis unitats derivadas. Per exemple, lo <a href="/wiki/Pascal_(unitat)" title="Pascal (unitat)">pascal</a> pòu èsser exprimit en N.m<sup><small>-2</small></sup>. </p> <div class="mw-heading mw-heading3"><h3 id="Lei_multiples_e_sotamultiples">Lei multiples e sotamultiples</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=13" title="Modificar la seccion : Lei multiples e sotamultiples" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=13" title="Edita el codi de la secció: Lei multiples e sotamultiples"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Un sistèma de prefixs oficiaus permet de designar leis unitats mutiplas e sotamultiplas d'una unitat. Per exemple, lo prefix quilo- permet de multiplicar per mila l'unitat de basa : lo <a href="/wiki/Quilom%C3%A8tre" title="Quilomètre">quilomètre</a> es ansin egau a 1 000 mètres. La lista dei prefixs es resumida dins la taula aicí dessota : </p> <table class="wikitable center"> <caption>Prefixs dau Sistèma Internacionau </caption> <tbody><tr style=""> <th rowspan="2">10<sup><small><i>n</i></small></sup> </th> <th rowspan="2">1000<sup><small><i>m</i></small></sup><br /> <i>m</i> = <i>n</i>/3 </th> <th rowspan="2">Prefix </th> <th rowspan="2">Simbòl </th> <th rowspan="2">Data d'adopcion </th> <th rowspan="2">Nombre decimau </th> <th colspan="2">Designacion </th></tr> <tr> <th>Escala lònga </th> <th>Escala corta </th></tr> <tr> <td>10<sup>24</sup> </td> <td>1 000<sup>8</sup> </td> <td style="text-align: center;">yotta </td> <td style="text-align: center;">Y </td> <td>1991 </td> <td>1 000 000 000 000 000 000 000 000 </td> <td style="text-align: center;">Quadrilion </td> <td style="text-align: center;">Octilion </td></tr> <tr> <td>10<sup>21</sup> </td> <td>1 000<sup>7</sup> </td> <td style="text-align: center;">zetta </td> <td style="text-align: center;">Z </td> <td>1991 </td> <td>1 000 000 000 000 000 000 000 </td> <td style="text-align: center;">Triliard </td> <td style="text-align: center;">Sextilion </td></tr> <tr> <td>10<sup>18</sup> </td> <td>1 000<sup>6</sup> </td> <td style="text-align: center;">exa </td> <td style="text-align: center;">E </td> <td>1975 </td> <td>1 000 000 000 000 000 000 </td> <td style="text-align: center;">Trilion </td> <td style="text-align: center;">Quintilion </td></tr> <tr> <td>10<sup>15</sup> </td> <td>1 000<sup>5</sup> </td> <td style="text-align: center;">peta </td> <td style="text-align: center;">P </td> <td>1975 </td> <td>1 000 000 000 000 000 </td> <td style="text-align: center;">Biliard </td> <td style="text-align: center;">Quadrilion </td></tr> <tr> <td>10<sup>12</sup> </td> <td>1 000<sup>4</sup> </td> <td style="text-align: center;">tera </td> <td style="text-align: center;">T </td> <td>1960 </td> <td>1 000 000 000 000 </td> <td style="text-align: center;">Bilion </td> <td style="text-align: center;">Trilion </td></tr> <tr> <td>10<sup>9</sup> </td> <td>1 000<sup>3</sup> </td> <td style="text-align: center;">giga </td> <td style="text-align: center;">G </td> <td>1960 </td> <td>1 000 000 000 </td> <td style="text-align: center;">Miliard </td> <td style="text-align: center;">Bilion </td></tr> <tr> <td>10<sup>6</sup> </td> <td>1 000<sup>2</sup> </td> <td style="text-align: center;">mega </td> <td style="text-align: center;">M </td> <td>1960 </td> <td>1 000 000 </td> <td colspan="2" style="text-align: center;">Milion </td></tr> <tr> <td>10<sup>3</sup> </td> <td>1 000<sup>1</sup> </td> <td style="text-align: center;">quilo </td> <td style="text-align: center;">k </td> <td>1795 </td> <td>1 000 </td> <td colspan="2" style="text-align: center;">Milier </td></tr> <tr> <td>10<sup>2</sup> </td> <td>1 000<sup>2/3</sup> </td> <td style="text-align: center;">ecto </td> <td style="text-align: center;">h </td> <td>1795 </td> <td>100 </td> <td colspan="2" style="text-align: center;">Centenau </td></tr> <tr> <td>10<sup>1</sup> </td> <td>1 000<sup>1/3</sup> </td> <td style="text-align: center;">deca </td> <td style="text-align: center;">da </td> <td>1795 </td> <td>10 </td> <td colspan="2" style="text-align: center;">Desenau </td></tr> <tr style="background-color:#EEE"> <td>10<sup>0</sup> </td> <td>1 000<sup>0</sup> </td> <td style="text-align: center;">(ges) </td> <td style="text-align: center;">— </td> <td style="text-align: center;">— </td> <td>1 </td> <td colspan="2" style="text-align: center;">Unitat </td></tr> <tr> <td>10<sup>−1</sup> </td> <td>1 000<sup>−1/3</sup> </td> <td style="text-align: center;">deci </td> <td style="text-align: center;">d </td> <td>1795 </td> <td>0,1 </td> <td colspan="2" style="text-align: center;">Desen </td></tr> <tr> <td>10<sup>−2</sup> </td> <td>1 000<sup>−2/3</sup> </td> <td style="text-align: center;">centi </td> <td style="text-align: center;">c </td> <td>1795 </td> <td>0,01 </td> <td colspan="2" style="text-align: center;">Centen </td></tr> <tr> <td>10<sup>−3</sup> </td> <td>1 000<sup>−1</sup> </td> <td style="text-align: center;">milli </td> <td style="text-align: center;">m </td> <td>1795 </td> <td>0,001 </td> <td colspan="2" style="text-align: center;">Milen </td></tr> <tr> <td>10<sup>−6</sup> </td> <td>1 000<sup>−2</sup> </td> <td style="text-align: center;">micro </td> <td style="text-align: center;">µ </td> <td>1960 </td> <td>0,000001 </td> <td colspan="2" style="text-align: center;">Milionen </td></tr> <tr> <td>10<sup>−9</sup> </td> <td>1 000<sup>−3</sup> </td> <td style="text-align: center;">nano </td> <td style="text-align: center;">n </td> <td>1960 </td> <td>0,000000001 </td> <td style="text-align: center;">Miliarden </td> <td style="text-align: center;">Bilionen </td></tr> <tr> <td>10<sup>−12</sup> </td> <td>1 000<sup>−4</sup> </td> <td style="text-align: center;">pico </td> <td style="text-align: center;">p </td> <td>1960 </td> <td>0,000000000001 </td> <td style="text-align: center;">Bilionen </td> <td style="text-align: center;">Trilionen </td></tr> <tr> <td>10<sup>−15</sup> </td> <td>1 000<sup>−5</sup> </td> <td style="text-align: center;">femto </td> <td style="text-align: center;">f </td> <td>1964 </td> <td>0,000000000000001 </td> <td style="text-align: center;">Biliardeb </td> <td style="text-align: center;">Quadrilionen </td></tr> <tr> <td>10<sup>−18</sup> </td> <td>1 000<sup>−6</sup> </td> <td style="text-align: center;">atto </td> <td style="text-align: center;">a </td> <td>1964 </td> <td>0,000000000000000001 </td> <td style="text-align: center;">Trilionen </td> <td style="text-align: center;">Quintilionen </td></tr> <tr> <td>10<sup>−21</sup> </td> <td>1 000<sup>−7</sup> </td> <td style="text-align: center;">zepto </td> <td style="text-align: center;">z </td> <td>1991 </td> <td>0,000000000000000000001 </td> <td style="text-align: center;">Triliarden </td> <td style="text-align: center;">Sextilionen </td></tr> <tr> <td>10<sup>−24</sup> </td> <td>1 000<sup>−8</sup> </td> <td style="text-align: center;">yocto </td> <td style="text-align: center;">y </td> <td>1991 </td> <td>0,000000000000000000000001 </td> <td style="text-align: center;">Quadrilionen </td> <td style="text-align: center;">Octilionen </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Leis_unitats_que_fan_pas_partida_dau_Sistèma_Internacionau"><span id="Leis_unitats_que_fan_pas_partida_dau_Sist.C3.A8ma_Internacionau"></span>Leis unitats que fan pas partida dau Sistèma Internacionau</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=14" title="Modificar la seccion : Leis unitats que fan pas partida dau Sistèma Internacionau" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=14" title="Edita el codi de la secció: Leis unitats que fan pas partida dau Sistèma Internacionau"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Fichi%C3%A8r:Mars_Climate_Orbiter_2.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/19/Mars_Climate_Orbiter_2.jpg/220px-Mars_Climate_Orbiter_2.jpg" decoding="async" width="220" height="200" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/19/Mars_Climate_Orbiter_2.jpg/330px-Mars_Climate_Orbiter_2.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/19/Mars_Climate_Orbiter_2.jpg/440px-Mars_Climate_Orbiter_2.jpg 2x" data-file-width="2200" data-file-height="2000" /></a><figcaption><i><a href="/w/index.php?title=Mars_Climate_Orbiter&action=edit&redlink=1" class="new" title="Mars Climate Orbiter (la pagina existís pas)">Mars Climate Orbiter</a></i>, sonda de la <a href="/wiki/NASA" class="mw-redirect" title="NASA">NASA</a> perduda lo 23 de setembre de 1999 en causa d'una error d'unitats.</figcaption></figure> <p>Leis autreis unitats fan pas partida dau Sistèma Internacionau. Se lor usatge es possibla dins la vida vidanta, es desconselhat dins lei trabalhs scientifics e tecnics car lei sistèmas de conversion d'aqueleis unitats pòdon èsser complèx. De mai, dins certanei cas, coma aqueu de la <a href="/w/index.php?title=Liura_(unitat)&action=edit&redlink=1" class="new" title="Liura (unitat) (la pagina existís pas)">liura</a>, mai d'un <a href="/wiki/Pa%C3%ADs" title="País">país</a> pòu tenir una definicion nacionala diferenta d'aquela en vigor dins d'autrei país. L'exemple pus famós dei problemas engendrats per l'usatge d'unitats nacionalas dins un domeni tecnic es la pèrda de la sonda espaciala <i><a href="/w/index.php?title=Mars_Climate_Orbiter&action=edit&redlink=1" class="new" title="Mars Climate Orbiter (la pagina existís pas)">Mars Climate Orbiter</a></i> en 1999 en causa d'un problema de conversion entre unitats anglosaxònas e unitats SI. </p><p>Pasmens, existís quauqueis excepcions per certaneis unitats que son liadas ais unitats fondamentalas : </p> <ul><li>la <a href="/wiki/Tona" title="Tona">tona</a> es utilizada per mesurar la massa dei cargas pesucas. Es egala a 1 000 quilogramas e correspònd donc en realitat au <a href="/w/index.php?title=Gigagrama&action=edit&redlink=1" class="new" title="Gigagrama (la pagina existís pas)">gigagrama</a>.</li> <li>l'<a href="/wiki/Ectara" title="Ectara">ectara</a> es utilizat per mesurar una aira. Es egau a un carrat de 100 mètres per 100 mètres, es a dire 10 000 mètres carrats.</li> <li>lo <a href="/wiki/Litre" title="Litre">litre</a> es utilizat per mesurar lei volums. Es egau a un cube de 10 cm per 10 cm per 10 cm.</li> <li>la <a href="/w/index.php?title=Minuta&action=edit&redlink=1" class="new" title="Minuta (la pagina existís pas)">minuta</a>, l'<a href="/wiki/Ora" class="mw-redirect" title="Ora">ora</a> e lo <a href="/wiki/Jorn" title="Jorn">jorn</a> son utilizadas per mesurar lei duradas. Son de multiples de la <a href="/wiki/Segonda" title="Segonda">segonda</a>.</li></ul> <p>L'usatge d'aqueleis unitats es tolerat dins de trabalhs scientifics e tecnics car son ben adaptadas a certaneis escalas. Pasmens, es generalament necessari de lei convertir en unitats SI per realizar un calcul. </p> <div class="mw-heading mw-heading3"><h3 id="Representacion_e_simbòls"><span id="Representacion_e_simb.C3.B2ls"></span>Representacion e simbòls</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=15" title="Modificar la seccion : Representacion e simbòls" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=15" title="Edita el codi de la secció: Representacion e simbòls"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Lo nom de l’unitat propriament dich comença totjorn per una minuscula (a mens que siá lo premier mot d’una frasa o dau nom « gra Celsius »). Aquesta règla s'aplica ai noms d'unitats derivats d'un nom pròpri de persona. <ul><li>Per exemple: "lo mètre es una unitat de longor"; "lo pascal es una unitat de pression"(<i><b>mai pas</b></i>: "lo Pascal es...").</li></ul></li> <li>Lei simbòls deis unitats s'escrivon en letras romanas (drechas): m (mètre), kg (quilograma).</li> <li>Lei simbòls deis unitats s'escrivon en minusculas, alevat aquelei que derivan d’un nom pròpri de persona: en aquest cas, la premiera letra dau simbòl es majuscula. <ul><li>Per exemple: km (quilomètre) (<i><b>mai pas</b></i> Km); A (ampèr), K (kelvin), N (newton), Pa (pascal), W (watt)</li></ul></li> <li>Lei simbòls deis unitats son precedits d'un espaci insecable (excepcion unica: se met pas d'espaci davant lei simbòls d'unitats sexagesimalas d'angle: 40° 16' 25"). <ul><li>Per exemple: <span class="nowrap">20 km</span> (<i><b>mai pas</b></i> 20km); <span class="nowrap">30 min</span>; <span class="nowrap">10 s</span></li></ul></li> <li>Lei simbòls deis unitats son pas seguits d’un ponch, a mens que sián plaçats a la fin d’una frasa, lo ponch dependent en aqueu cas de la <a href="/wiki/Pontuacion" title="Pontuacion">pontuacion</a> abituala.</li> <li>Lei simbòls s'escrivon sens « s » au plurau (« s » significa "segonda") e sensa ponch finau.</li> <li>Per exemple: <span class="nowrap">20 km</span> <i><b>mai pas</b></i> <span class="nowrap">20 kms</span> <ul><li>Cas particulars: lo bar e lo bit an per simbòl "bar" e "bit" respectivament (lo nom e lo simbòl son identics); s'escriu doncas la pression exprimidas en bars: <span class="nowrap">30 bar</span>; s'escriu: <span class="nowrap">64 bit</span>, 1200 bit/s</li></ul></li> <li>Lo simbòl dau prefixe se deu pas separar d'aqueu de l’unitat. <ul><li>Per exemple, lo simbòl dau millimètre es: mm</li></ul></li> <li>Quand una unitat derivada es formada en multiplicant doas unitats o mai, es exprimida per mejan de simbòls d’unitats separats per de ponchs a mieja autor o per un espaci. <ul><li>Per exemple: kg·m o kg m; N·m o N m</li></ul></li> <li>Quand una unitat derivada es formada en divident una unitat per una autra, se pòt utilizar una barra oblica (/), una barra orizontala o ben d'exponents negatius. <ul><li>Per exemple: m/s o m·s<sup>-1</sup></li></ul></li> <li>Se lo denominator contèn divèrs tèrmes, aquestei se separan per de ponchs e non per de barras de fraccions. Pasmens, vau mai d'utilizar leis exponents negatius, per exemple: W·m<sup>-1</sup>·K<sup>-1</sup>.</li> <li>Se deu jamai far seguir sus la meteissa linha una barra oblica e un signe de multiplicacion o de division, a mens que de parentèsis sián apondudas per defugir tota ambigüitat. Dins lei cas complicats, se deu utilizar d'exponents negatius o de parentèsis per defugir tota ambigüitat. <ul><li>Per exemple: m/s<sup>2</sup> o m·s<sup>-2</sup> <i><b>mai pas</b></i> m/s/s</li></ul></li> <li>Lo simbòl se deu totjorn escriure après lo nombre. <ul><li>Per exemple: <span class="nowrap">35,6 kg</span> <i><b>e non pas</b></i> 35 kg 6 (mai s'escriu: 6 h 54 min).</li></ul></li> <li>Lo separator decimau es lo simbòl utilizat per separar la partida entiera de la partida decimala dins l'escritura d'un nombre. Poirà èsser, segon l'usança locala, la virgula sus la linha o lo ponch sus la linha (convèn de pas mesclar lei doas usanças). <ul><li>Per exemple: 3,14 o 3.14</li></ul></li> <li>Lei nombres que comprenon un grand nombre de chifras se pòdon partejar en grops de 3 chifras separats per d'espacis insecables, per fin de facilitar la lectura. <b>Aquelei grops se separan jamai per de ponchs</b> (ni de virgulas). Pasmens, quand i a ren que quatre chifras avans o après lo separator decimau, l'usança es de pas separar lei chifras. D'agropar o non lei chifras es una question de chausida personala. <ul><li>Per exemple: 43 279,168 29 o 43279,16829, <i><b>mai pas</b></i> 43.279,168.29</li></ul></li> <li>Escritura dei nombres en mòde scientific. <ul><li>Per exemple: 1,25 X 10<sup>-5</sup> unitat SI</li></ul></li></ul> <div class="mw-heading mw-heading2"><h2 id="Annèxas"><span id="Ann.C3.A8xas"></span>Annèxas</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=16" title="Modificar la seccion : Annèxas" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=16" title="Edita el codi de la secció: Annèxas"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Liames_intèrnes"><span id="Liames_int.C3.A8rnes"></span>Liames intèrnes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=17" title="Modificar la seccion : Liames intèrnes" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=17" title="Edita el codi de la secció: Liames intèrnes"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <div style="-moz-column-count:3; column-count:3;"> <ul><li><a href="/w/index.php?title=Unitat_de_basa_dau_Sist%C3%A8ma_Internacionau&action=edit&redlink=1" class="new" title="Unitat de basa dau Sistèma Internacionau (la pagina existís pas)">Unitats de basa dau Sistèma Internacionau</a> <ul><li><a href="/wiki/Amp%C3%A8r" title="Ampèr">ampèr</a></li> <li><a href="/wiki/Cand%C3%A8la" title="Candèla">candèla</a></li> <li><a href="/wiki/Kelvin" title="Kelvin">kelvin</a></li> <li><a href="/wiki/M%C3%A8tre" title="Mètre">mètre</a></li> <li><a href="/wiki/M%C3%B2l_(unitat)" title="Mòl (unitat)">mòl</a></li> <li><a href="/wiki/Quilograma" title="Quilograma">quilograma</a></li> <li><a href="/wiki/Segonda" title="Segonda">segonda</a></li></ul></li> <li><a href="/w/index.php?title=Unitat_derivada_dau_Sist%C3%A8ma_Internacionau&action=edit&redlink=1" class="new" title="Unitat derivada dau Sistèma Internacionau (la pagina existís pas)">Unitats derivadas dau Sistèma Internacionau</a></li> <li><a href="/w/index.php?title=Convencion_dau_M%C3%A8tre&action=edit&redlink=1" class="new" title="Convencion dau Mètre (la pagina existís pas)">Convencion dau Mètre</a></li> <li><a href="/w/index.php?title=Conversion_deis_unitats&action=edit&redlink=1" class="new" title="Conversion deis unitats (la pagina existís pas)">Conversion deis unitats</a></li> <li><a href="/w/index.php?title=%C3%92rdre_de_grandor&action=edit&redlink=1" class="new" title="Òrdre de grandor (la pagina existís pas)">Òrdre de grandor</a></li> <li><a href="/w/index.php?title=Metrologia&action=edit&redlink=1" class="new" title="Metrologia (la pagina existís pas)">Metrologia</a></li> <li><a href="/w/index.php?title=Significacion_deis_unitats_de_mesura&action=edit&redlink=1" class="new" title="Significacion deis unitats de mesura (la pagina existís pas)">Significacion deis unitats de mesura</a></li> <li><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_2011&action=edit&redlink=1" class="new" title="Sistèma Internacionau 2011 (la pagina existís pas)">Sistèma Internacionau 2011</a></li> <li><a href="/wiki/Bur%C3%A8u_Internacionau_dei_Pes_e_Mesuras" title="Burèu Internacionau dei Pes e Mesuras">Burèu Internacionau dei Pes e Mesuras</a> (BIPM)</li> <li><a href="/wiki/Prefixe_dau_Sist%C3%A8ma_Internacionau" title="Prefixe dau Sistèma Internacionau">Prefixe dau Sistèma Internacionau</a></li> <li><a href="/wiki/Temps_Universau_Coordenat" class="mw-redirect" title="Temps Universau Coordenat">Temps Universau Coordenat</a> (UTC)</li></ul> </div> <div class="mw-heading mw-heading3"><h3 id="Liames_extèrnes"><span id="Liames_ext.C3.A8rnes"></span>Liames extèrnes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=18" title="Modificar la seccion : Liames extèrnes" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=18" title="Edita el codi de la secció: Liames extèrnes"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span style="font-size:0.95em; font-weight:bold; color:var(--color-subtle, #54595d);" title="En francés">(<abbr title="">fr</abbr>)</span> <a rel="nofollow" class="external text" href="http://www1.bipm.org/fr/si/history-si/">Bref historique du SI</a></li> <li><span style="font-size:0.95em; font-weight:bold; color:var(--color-subtle, #54595d);" title="En francés">(<abbr title="">fr</abbr>)</span> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20081121093456/http://www.quartier-rural.org/smd-si/">Informations supplémentaires sur le SI</a></li> <li><span style="font-size:0.95em; font-weight:bold; color:var(--color-subtle, #54595d);" title="En francés">(<abbr title="">fr</abbr>)</span> <a rel="nofollow" class="external text" href="http://www1.bipm.org/fr/publications/brochure/">Brochure officielle du BIPM sur le SI</a></li> <li><span style="font-size:0.95em; font-weight:bold; color:var(--color-subtle, #54595d);" title="En anglés">(<abbr title="">en</abbr>)</span> <a rel="nofollow" class="external text" href="http://physics.nist.gov/cuu/Units/index.html">International System of Units</a> (<a href="/w/index.php?title=National_Institute_of_Standards_and_Technology&action=edit&redlink=1" class="new" title="National Institute of Standards and Technology (la pagina existís pas)">NIST</a>)</li> <li><span style="font-size:0.95em; font-weight:bold; color:var(--color-subtle, #54595d);" title="En francés">(<abbr title="">fr</abbr>)</span> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070113225129/http://www.ac-nancy-metz.fr/enseign/physique/divers/unites/unites-SI.htm">Règles générales d'écriture des nombres, des unités et des symboles</a>, définies par les normes NF X 02-003, 02-004 et 02-006</li></ul> <div class="mw-heading mw-heading3"><h3 id="Bibliografia">Bibliografia</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=19" title="Modificar la seccion : Bibliografia" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=19" title="Edita el codi de la secció: Bibliografia"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Nòtas_e_referéncias"><span id="N.C3.B2tas_e_refer.C3.A9ncias"></span>Nòtas e referéncias</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&veaction=edit&section=20" title="Modificar la seccion : Nòtas e referéncias" class="mw-editsection-visualeditor"><span>modificar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sist%C3%A8ma_Internacionau_d%27Unitats&action=edit&section=20" title="Edita el codi de la secció: Nòtas e referéncias"><span>Modificar lo còdi</span></a><span class="mw-editsection-bracket">]</span></span></div> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text">Per mai precisions ‹<a rel="nofollow" class="external text" href="http://www.bipm.fr/fr/si/si_brochure/appendix1/decisions_terminology/4-4.html">Bureau International de Poids et Mesures</a>›.</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><b>(en)</b> Johns Wilkins, <i>An Essay towards a Real Character and a Philosophical Language</i>, 1668, p. 191.</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><b>(it)</b> Tito Livio Burattini, <i>Misura Universale</i>, 1675.</span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text">Aquò significa que la version francesa fa fe.</span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text">Borda, Lagrange, Condorcet e Laplace, <i>Rapport fait à l'Académie des Sciences sur la nomenclature des mesures linéaires et superficielles</i>, 11 de julhet de 1792, <i>Annales de chimie</i>, 793, vol. 16, p. 253.</span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text"><b><a href="/wiki/Franc%C3%A9s" title="Francés">(fr)</a></b> Bureau international des poids et mesures, <i>Temps et fréquences : Unité SI de temps (seconde)</i>, consultat lo 6 de mai de <a href="/wiki/2020" class="mw-redirect" title="2020">2020</a>, <a rel="nofollow" class="external autonumber" href="https://web.archive.org/web/20200203191504/https://www.bipm.org/metrologie/time-frequency/units.html">[1]</a></span> </li> </ol> <p><br /> </p> <table class="navbox collapsible noprint autocollapse" data-autocollapse-group="paleta" style=""> <tbody><tr><th class="navbox-title" colspan="2" style=""><div style="float:left; width:6em; text-align:left"><div class="noprint plainlinksneverexpand nowrap tnavbar" style="background-color:transparent; padding:0; font-size:xx-small; color:#000000;"><a href="/wiki/Mod%C3%A8l:Sist%C3%A8ma_internacional" title="Modèl:Sistèma internacional"><abbr class="abbr" title="Veire aqueste modèl.">v</abbr></a> · <a class="external text" href="https://oc.wikipedia.org/w/index.php?title=Mod%C3%A8l:Sist%C3%A8ma_internacional&action=edit"><abbr class="abbr" title="Modificar aqueste modèl. Mercé de previsualizar abans de salvar.">m</abbr></a></div></div><span style="font-size:110%"><a class="mw-selflink selflink">Sistèma Internacional d'Unitats</a></span></th> </tr> <tr> <th class="navbox-group" style=""><a href="/w/index.php?title=Unitats_de_basa_del_Sist%C3%A8ma_internacional&action=edit&redlink=1" class="new" title="Unitats de basa del Sistèma internacional (la pagina existís pas)">Unitats de basa</a></th> <td class="navbox-list" style=""><a href="/wiki/Amp%C3%A8r" title="Ampèr">ampèr</a> • <a href="/wiki/Candela" title="Candela">candela</a> • <a href="/wiki/Kelvin" title="Kelvin">kelvin</a> • <a href="/wiki/M%C3%A8tre" title="Mètre">mètre</a> • <a href="/wiki/M%C3%B2l_(unitat)" title="Mòl (unitat)">mòl</a> • <a href="/wiki/Quilograma" title="Quilograma">quilograma</a> • <a href="/wiki/Segonda" title="Segonda">segonda</a></td> </tr> <tr> <th class="navbox-group" style=""><a href="/w/index.php?title=Unitats_derivadas_del_Sist%C3%A8ma_internacional&action=edit&redlink=1" class="new" title="Unitats derivadas del Sistèma internacional (la pagina existís pas)">Unitats derivadas</a></th> <td class="navbox-list navbox-even" style=""><a href="/wiki/Becquerel" title="Becquerel">becquerel</a> • <a href="/wiki/Coulomb" title="Coulomb">coulomb</a> • <a href="/wiki/Farad" title="Farad">farad</a> • <a href="/wiki/Gra_Celsius" title="Gra Celsius">gra Celsius</a> • <a href="/wiki/Gray_(unitat)" title="Gray (unitat)">gray</a> • <a href="/w/index.php?title=Henry_(unitat)&action=edit&redlink=1" class="new" title="Henry (unitat) (la pagina existís pas)">henry</a> • <a href="/wiki/Hertz" title="Hertz">hertz</a> • <a href="/wiki/Joule" title="Joule">joule</a> • <a href="/w/index.php?title=Katal&action=edit&redlink=1" class="new" title="Katal (la pagina existís pas)">katal</a> • <a href="/w/index.php?title=Lumen_(unitat)&action=edit&redlink=1" class="new" title="Lumen (unitat) (la pagina existís pas)">lumen</a> • <a href="/w/index.php?title=Lux_(unitat)&action=edit&redlink=1" class="new" title="Lux (unitat) (la pagina existís pas)">lux</a> • <a href="/wiki/Newton_(unitat)" title="Newton (unitat)">newton</a> • <a href="/w/index.php?title=Ohm_(unitat)&action=edit&redlink=1" class="new" title="Ohm (unitat) (la pagina existís pas)">ohm</a> • <a href="/wiki/Pascal_(unitat)" title="Pascal (unitat)">pascal</a> • <a href="/wiki/Radian" title="Radian">radian</a> • <a href="/w/index.php?title=Siemens_(unitat)&action=edit&redlink=1" class="new" title="Siemens (unitat) (la pagina existís pas)">siemens</a> • <a href="/wiki/Sievert" title="Sievert">Sievert</a> • <a href="/w/index.php?title=Steradian&action=edit&redlink=1" class="new" title="Steradian (la pagina existís pas)">steradian</a> • <a href="/wiki/Tesla_(unitat)" title="Tesla (unitat)">tesla</a> • <a href="/wiki/V%C3%B2lt" title="Vòlt">vòlt</a> • <a href="/wiki/Watt" title="Watt">watt</a> • <a href="/w/index.php?title=Weber_(unitat)&action=edit&redlink=1" class="new" title="Weber (unitat) (la pagina existís pas)">weber</a></td> </tr> <tr> <th class="navbox-group" style=""><a href="/w/index.php?title=Prefixes_del_Sist%C3%A8me_internacional_d%27unitats&action=edit&redlink=1" class="new" title="Prefixes del Sistème internacional d'unitats (la pagina existís pas)">Prefixes</a></th> <td class="navbox-list" style=""><a href="/w/index.php?title=Iocto&action=edit&redlink=1" class="new" title="Iocto (la pagina existís pas)">iocto</a> < <a href="/w/index.php?title=Zepto&action=edit&redlink=1" class="new" title="Zepto (la pagina existís pas)">zepto</a> < <a href="/w/index.php?title=Ato&action=edit&redlink=1" class="new" title="Ato (la pagina existís pas)">ato</a> < <a href="/w/index.php?title=Femto&action=edit&redlink=1" class="new" title="Femto (la pagina existís pas)">femto</a> < <a href="/w/index.php?title=Pico&action=edit&redlink=1" class="new" title="Pico (la pagina existís pas)">pico</a> < <a href="/w/index.php?title=Nano&action=edit&redlink=1" class="new" title="Nano (la pagina existís pas)">nano</a> < <a href="/w/index.php?title=Micro_(prefixe_del_Sist%C3%A8ma_internacional_d%27unitats)&action=edit&redlink=1" class="new" title="Micro (prefixe del Sistèma internacional d'unitats) (la pagina existís pas)">micro</a> < <a href="/w/index.php?title=Mili&action=edit&redlink=1" class="new" title="Mili (la pagina existís pas)">mili</a> < <a href="/w/index.php?title=Centi&action=edit&redlink=1" class="new" title="Centi (la pagina existís pas)">centi</a> < <a href="/w/index.php?title=Deci_(prefixe_del_Sist%C3%A8ma_internacional_d%27unitats)&action=edit&redlink=1" class="new" title="Deci (prefixe del Sistèma internacional d'unitats) (la pagina existís pas)">deci</a> < UNITAT > <a href="/w/index.php?title=Deca_(prefixe_del_Sist%C3%A8ma_internacional_d%27unitats)&action=edit&redlink=1" class="new" title="Deca (prefixe del Sistèma internacional d'unitats) (la pagina existís pas)">deca</a> > <a href="/w/index.php?title=Ecto&action=edit&redlink=1" class="new" title="Ecto (la pagina existís pas)">ecto</a> > <a href="/w/index.php?title=Quilo&action=edit&redlink=1" class="new" title="Quilo (la pagina existís pas)">quilo</a> > <a href="/w/index.php?title=Mega&action=edit&redlink=1" class="new" title="Mega (la pagina existís pas)">mega</a> > <a href="/w/index.php?title=Giga&action=edit&redlink=1" class="new" title="Giga (la pagina existís pas)">giga</a> > <a href="/wiki/Tera" title="Tera">tera</a> > <a href="/w/index.php?title=Peta&action=edit&redlink=1" class="new" title="Peta (la pagina existís pas)">peta</a> > <a href="/w/index.php?title=Exa&action=edit&redlink=1" class="new" title="Exa (la pagina existís pas)">exa</a> > <a href="/w/index.php?title=Zeta&action=edit&redlink=1" class="new" title="Zeta (la pagina existís pas)">zeta</a> > <a href="/w/index.php?title=Iota_(prefixe_del_Sist%C3%A8ma_internacional_d%27unitats)&action=edit&redlink=1" 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