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Natuurkundige eenheid - Wikipedia

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<div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Inhoud</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">naar zijbalk verplaatsen</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">verbergen</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Top</div> </a> </li> <li id="toc-SI-eenheden" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#SI-eenheden"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>SI-eenheden</span> </div> </a> <ul id="toc-SI-eenheden-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Rekenkundige_bewerkingen" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Rekenkundige_bewerkingen"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Rekenkundige bewerkingen</span> </div> </a> <ul id="toc-Rekenkundige_bewerkingen-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Schrijfwijze" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Schrijfwijze"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Schrijfwijze</span> </div> </a> <ul id="toc-Schrijfwijze-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Meervoud_in_het_Nederlands" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Meervoud_in_het_Nederlands"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Meervoud in het Nederlands</span> </div> </a> <ul id="toc-Meervoud_in_het_Nederlands-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Omrekenen_van_eenheden" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Omrekenen_van_eenheden"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Omrekenen van eenheden</span> </div> </a> <ul id="toc-Omrekenen_van_eenheden-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Metrieke_stelsel" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Metrieke_stelsel"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Metrieke stelsel</span> </div> </a> <ul id="toc-Metrieke_stelsel-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-EU-richtlijn" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#EU-richtlijn"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>EU-richtlijn</span> </div> </a> <ul id="toc-EU-richtlijn-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Nederlandse_wetgeving" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Nederlandse_wetgeving"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Nederlandse wetgeving</span> </div> </a> <ul id="toc-Nederlandse_wetgeving-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Zie_ook" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Zie_ook"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>Zie ook</span> </div> </a> <ul id="toc-Zie_ook-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Noten" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Noten"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>Noten</span> </div> </a> <ul id="toc-Noten-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Inhoud" 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="Inhoudsopgave omschakelen" > <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">Inhoudsopgave omschakelen</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">Natuurkundige eenheid</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="Ga naar een artikel in een andere taal. Beschikbaar in 96 talen" > <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-96" 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">96 talen</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Unidat_de_mesura" title="Unidat de mesura – Aragonees" lang="an" hreflang="an" data-title="Unidat de mesura" data-language-autonym="Aragonés" data-language-local-name="Aragonees" 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%88%D8%AD%D8%AF%D8%A9_%D9%82%D9%8A%D8%A7%D8%B3" title="وحدة قياس – Arabisch" lang="ar" hreflang="ar" data-title="وحدة قياس" data-language-autonym="العربية" data-language-local-name="Arabisch" 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%B9%D8%A8%D8%B1%D8%A9" title="عبرة – Marokkaans Arabisch" lang="ary" hreflang="ary" data-title="عبرة" data-language-autonym="الدارجة" data-language-local-name="Marokkaans Arabisch" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Unid%C3%A1_de_midida" title="Unidá de midida – Asturisch" lang="ast" hreflang="ast" data-title="Unidá de midida" data-language-autonym="Asturianu" data-language-local-name="Asturisch" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-av mw-list-item"><a href="https://av.wikipedia.org/wiki/%D0%91%D0%BE%D1%80%D1%86%D0%B8%D0%BD%D0%B0%D0%BB%D1%8A%D1%83%D0%BB_%D1%80%D0%B8%D0%BA%D3%80%D0%BA%D3%80%D0%BA%D0%B5%D0%BD" title="Борциналъул рикӀкӀкен – Avarisch" lang="av" hreflang="av" data-title="Борциналъул рикӀкӀкен" data-language-autonym="Авар" data-language-local-name="Avarisch" class="interlanguage-link-target"><span>Авар</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/%C3%96l%C3%A7%C3%BC_vahidl%C9%99ri" title="Ölçü vahidləri – Azerbeidzjaans" lang="az" hreflang="az" data-title="Ölçü vahidləri" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbeidzjaans" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%90%D0%B4%D0%B7%D1%96%D0%BD%D0%BA%D0%B0_%D0%B2%D1%8B%D0%BC%D1%8F%D1%80%D1%8D%D0%BD%D0%BD%D1%8F" title="Адзінка вымярэння – Belarussisch" lang="be" hreflang="be" data-title="Адзінка вымярэння" data-language-autonym="Беларуская" data-language-local-name="Belarussisch" 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%90%D0%B4%D0%B7%D1%96%D0%BD%D0%BA%D1%96_%D0%B2%D1%8B%D0%BC%D1%8F%D1%80%D1%8D%D0%BD%D1%8C%D0%BD%D1%8F" title="Адзінкі вымярэньня – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Адзінкі вымярэньня" 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%A1%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B8_%D0%B5%D0%B4%D0%B8%D0%BD%D0%B8%D1%86%D0%B8" title="Системи единици – Bulgaars" lang="bg" hreflang="bg" data-title="Системи единици" data-language-autonym="Български" data-language-local-name="Bulgaars" 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%AA%E0%A6%B0%E0%A6%BF%E0%A6%AE%E0%A6%BE%E0%A6%AA%E0%A7%87%E0%A6%B0_%E0%A6%8F%E0%A6%95%E0%A6%95" title="পরিমাপের একক – Bengaals" lang="bn" hreflang="bn" data-title="পরিমাপের একক" data-language-autonym="বাংলা" data-language-local-name="Bengaals" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Mjerna_jedinica" title="Mjerna jedinica – Bosnisch" lang="bs" hreflang="bs" data-title="Mjerna jedinica" data-language-autonym="Bosanski" data-language-local-name="Bosnisch" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Unitat_de_mesura" title="Unitat de mesura – Catalaans" lang="ca" hreflang="ca" data-title="Unitat de mesura" data-language-autonym="Català" data-language-local-name="Catalaans" 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/%DB%8C%DB%95%DA%A9%DB%95%DA%A9%D8%A7%D9%86%DB%8C_%D9%BE%DB%8E%D9%88%D8%A7%D9%86" title="یەکەکانی پێوان – Soranî" lang="ckb" hreflang="ckb" data-title="یەکەکانی پێوان" data-language-autonym="کوردی" data-language-local-name="Soranî" 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/Fyzik%C3%A1ln%C3%AD_jednotka" title="Fyzikální jednotka – Tsjechisch" lang="cs" hreflang="cs" data-title="Fyzikální jednotka" data-language-autonym="Čeština" data-language-local-name="Tsjechisch" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%A4%D0%B8%D0%B7%D0%B8%D0%BA%C4%83%D0%BB%D0%BB%D0%B0_%D0%BA%D0%B0%D0%BF_%D0%BF%C4%95%D1%80%D1%87%D0%B8" title="Физикăлла кап пĕрчи – Tsjoevasjisch" lang="cv" hreflang="cv" data-title="Физикăлла кап пĕрчи" data-language-autonym="Чӑвашла" data-language-local-name="Tsjoevasjisch" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/M%C3%A5leenhed" title="Måleenhed – Deens" lang="da" hreflang="da" data-title="Måleenhed" data-language-autonym="Dansk" data-language-local-name="Deens" 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/Ma%C3%9Feinheit" title="Maßeinheit – Duits" lang="de" hreflang="de" data-title="Maßeinheit" data-language-autonym="Deutsch" data-language-local-name="Duits" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9C%CE%BF%CE%BD%CE%AC%CE%B4%CE%B1_%CE%BC%CE%AD%CF%84%CF%81%CE%B7%CF%83%CE%B7%CF%82" title="Μονάδα μέτρησης – Grieks" lang="el" hreflang="el" data-title="Μονάδα μέτρησης" data-language-autonym="Ελληνικά" data-language-local-name="Grieks" 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/Unit_of_measurement" title="Unit of measurement – Engels" lang="en" hreflang="en" data-title="Unit of measurement" data-language-autonym="English" data-language-local-name="Engels" 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/Mezurunuo" title="Mezurunuo – Esperanto" lang="eo" hreflang="eo" data-title="Mezurunuo" 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/Unidad_de_medida" title="Unidad de medida – Spaans" lang="es" hreflang="es" data-title="Unidad de medida" data-language-autonym="Español" data-language-local-name="Spaans" 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/M%C3%B5%C3%B5t%C3%BChik" title="Mõõtühik – Estisch" lang="et" hreflang="et" data-title="Mõõtühik" data-language-autonym="Eesti" data-language-local-name="Estisch" 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/Neurri-unitate" title="Neurri-unitate – Baskisch" lang="eu" hreflang="eu" data-title="Neurri-unitate" data-language-autonym="Euskara" data-language-local-name="Baskisch" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-ext mw-list-item"><a href="https://ext.wikipedia.org/wiki/Mid%C3%ADa" title="Midía – Extremeens" lang="ext" hreflang="ext" data-title="Midía" data-language-autonym="Estremeñu" data-language-local-name="Extremeens" class="interlanguage-link-target"><span>Estremeñu</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DB%8C%DA%A9%D8%A7" title="یکا – Perzisch" lang="fa" hreflang="fa" data-title="یکا" data-language-autonym="فارسی" data-language-local-name="Perzisch" 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/Mittayksikk%C3%B6" title="Mittayksikkö – Fins" lang="fi" hreflang="fi" data-title="Mittayksikkö" data-language-autonym="Suomi" data-language-local-name="Fins" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Unit%C3%A9_de_mesure" title="Unité de mesure – Frans" lang="fr" hreflang="fr" data-title="Unité de mesure" data-language-autonym="Français" data-language-local-name="Frans" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Aonad_tomhais" title="Aonad tomhais – Iers" lang="ga" hreflang="ga" data-title="Aonad tomhais" data-language-autonym="Gaeilge" data-language-local-name="Iers" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Unidade_de_medida" title="Unidade de medida – Galicisch" lang="gl" hreflang="gl" data-title="Unidade de medida" data-language-autonym="Galego" data-language-local-name="Galicisch" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%8F%E0%AA%95%E0%AA%AE" title="એકમ – Gujarati" lang="gu" hreflang="gu" data-title="એકમ" data-language-autonym="ગુજરાતી" data-language-local-name="Gujarati" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/T%C3%A2n-vi" title="Tân-vi – Hakka" lang="hak" hreflang="hak" data-title="Tân-vi" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="Hakka" class="interlanguage-link-target"><span>客家語 / Hak-kâ-ngî</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%99%D7%97%D7%99%D7%93%D7%AA_%D7%9E%D7%99%D7%93%D7%94" title="יחידת מידה – Hebreeuws" lang="he" hreflang="he" data-title="יחידת מידה" data-language-autonym="עברית" data-language-local-name="Hebreeuws" 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%AE%E0%A4%BE%E0%A4%AA%E0%A4%A8_%E0%A4%95%E0%A5%87_%E0%A4%AE%E0%A4%BE%E0%A4%A4%E0%A5%8D%E0%A4%B0%E0%A4%95" title="मापन के मात्रक – Hindi" lang="hi" hreflang="hi" data-title="मापन के मात्रक" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Mjerna_jedinica" title="Mjerna jedinica – Kroatisch" lang="hr" hreflang="hr" data-title="Mjerna jedinica" data-language-autonym="Hrvatski" data-language-local-name="Kroatisch" 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/Inite_mezi" title="Inite mezi – Haïtiaans Creools" lang="ht" hreflang="ht" data-title="Inite mezi" data-language-autonym="Kreyòl ayisyen" data-language-local-name="Haïtiaans Creools" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/M%C3%A9rt%C3%A9kegys%C3%A9g" title="Mértékegység – Hongaars" lang="hu" hreflang="hu" data-title="Mértékegység" data-language-autonym="Magyar" data-language-local-name="Hongaars" 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%89%D5%A1%D6%83%D5%B4%D5%A1%D5%B6_%D5%B4%D5%AB%D5%A1%D5%BE%D5%B8%D6%80%D5%B6%D5%A5%D6%80" title="Չափման միավորներ – Armeens" lang="hy" hreflang="hy" data-title="Չափման միավորներ" data-language-autonym="Հայերեն" data-language-local-name="Armeens" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Unitate_de_mesura" title="Unitate de mesura – Interlingua" lang="ia" hreflang="ia" data-title="Unitate de mesura" 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/Satuan" title="Satuan – Indonesisch" lang="id" hreflang="id" data-title="Satuan" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesisch" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/M%C3%A6lieining" title="Mælieining – IJslands" lang="is" hreflang="is" data-title="Mælieining" data-language-autonym="Íslenska" data-language-local-name="IJslands" 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/Unit%C3%A0_di_misura" title="Unità di misura – Italiaans" lang="it" hreflang="it" data-title="Unità di misura" data-language-autonym="Italiano" data-language-local-name="Italiaans" 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/%E7%89%A9%E7%90%86%E5%8D%98%E4%BD%8D" title="物理単位 – Japans" lang="ja" hreflang="ja" data-title="物理単位" data-language-autonym="日本語" data-language-local-name="Japans" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%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%98%E1%83%A1%E1%83%A2%E1%83%94%E1%83%9B%E1%83%94%E1%83%91%E1%83%98" title="ერთეულთა სისტემები – Georgisch" lang="ka" hreflang="ka" data-title="ერთეულთა სისტემები" data-language-autonym="ქართული" data-language-local-name="Georgisch" 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/Tigget_n_usekti" title="Tigget n usekti – Kabylisch" lang="kab" hreflang="kab" data-title="Tigget n usekti" data-language-autonym="Taqbaylit" data-language-local-name="Kabylisch" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%91%D1%96%D1%80%D0%BB%D1%96%D0%BA_(%D0%BC%D3%A9%D0%BB%D1%88%D0%B5%D1%80)" title="Бірлік (мөлшер) – Kazachs" lang="kk" hreflang="kk" data-title="Бірлік (мөлшер)" data-language-autonym="Қазақша" data-language-local-name="Kazachs" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%B8%A1%EC%A0%95_%EB%8B%A8%EC%9C%84" title="측정 단위 – Koreaans" lang="ko" hreflang="ko" data-title="측정 단위" data-language-autonym="한국어" data-language-local-name="Koreaans" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-krc mw-list-item"><a href="https://krc.wikipedia.org/wiki/%D0%81%D0%BB%D1%87%D0%B5%D0%BB%D0%B5%D1%83_%D0%B1%D0%B8%D1%80%D0%B8%D0%BC" title="Ёлчелеу бирим – Karatsjaj-Balkarisch" lang="krc" hreflang="krc" data-title="Ёлчелеу бирим" data-language-autonym="Къарачай-малкъар" data-language-local-name="Karatsjaj-Balkarisch" class="interlanguage-link-target"><span>Къарачай-малкъар</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Yekeya_p%C3%AEvan%C3%AA" title="Yekeya pîvanê – Koerdisch" lang="ku" hreflang="ku" data-title="Yekeya pîvanê" data-language-autonym="Kurdî" data-language-local-name="Koerdisch" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%A4%D0%B8%D0%B7%D0%B8%D0%BA%D0%B0%D0%BB%D1%8B%D0%BA_%D1%87%D0%BE%D2%A3%D0%B4%D1%83%D0%BA%D1%82%D0%B0%D1%80%D0%B4%D1%8B%D0%BD_%D0%B1%D0%B8%D1%80%D0%B4%D0%B8%D0%BA%D1%82%D0%B5%D1%80%D0%B8" title="Физикалык чоңдуктардын бирдиктери – Kirgizisch" lang="ky" hreflang="ky" data-title="Физикалык чоңдуктардын бирдиктери" data-language-autonym="Кыргызча" data-language-local-name="Kirgizisch" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Moosseenheet" title="Moosseenheet – Luxemburgs" lang="lb" hreflang="lb" data-title="Moosseenheet" data-language-autonym="Lëtzebuergesch" data-language-local-name="Luxemburgs" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lg mw-list-item"><a href="https://lg.wikipedia.org/wiki/Namungina_z%27ebipimo" title="Namungina z&#039;ebipimo – Luganda" lang="lg" hreflang="lg" data-title="Namungina z&#039;ebipimo" data-language-autonym="Luganda" data-language-local-name="Luganda" class="interlanguage-link-target"><span>Luganda</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Matavimo_vienetas" title="Matavimo vienetas – Litouws" lang="lt" hreflang="lt" data-title="Matavimo vienetas" data-language-autonym="Lietuvių" data-language-local-name="Litouws" 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/M%C4%93rvien%C4%ABba" title="Mērvienība – Lets" lang="lv" hreflang="lv" data-title="Mērvienība" data-language-autonym="Latviešu" data-language-local-name="Lets" 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%95%D0%B4%D0%B8%D0%BD%D0%B8%D1%86%D0%B0_%D0%BC%D0%B5%D1%80%D0%BA%D0%B0" title="Единица мерка – Macedonisch" lang="mk" hreflang="mk" data-title="Единица мерка" data-language-autonym="Македонски" data-language-local-name="Macedonisch" 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%8F%E0%B4%95%E0%B4%95%E0%B4%82" title="ഏകകം – Malayalam" lang="ml" hreflang="ml" data-title="ഏകകം" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%8F%E0%A4%95%E0%A4%95" title="एकक – Marathi" lang="mr" hreflang="mr" data-title="एकक" 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/Unit_ukuran" title="Unit ukuran – Maleis" lang="ms" hreflang="ms" data-title="Unit ukuran" data-language-autonym="Bahasa Melayu" data-language-local-name="Maleis" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Maateenheit" title="Maateenheit – Nedersaksisch" lang="nds" hreflang="nds" data-title="Maateenheit" data-language-autonym="Plattdüütsch" data-language-local-name="Nedersaksisch" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/M%C3%A5leining" title="Måleining – Noors - Nynorsk" lang="nn" hreflang="nn" data-title="Måleining" data-language-autonym="Norsk nynorsk" data-language-local-name="Noors - 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/M%C3%A5leenhet" title="Måleenhet – Noors - Bokmål" lang="nb" hreflang="nb" data-title="Måleenhet" data-language-autonym="Norsk bokmål" data-language-local-name="Noors - 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/Mot%C5%A1o" title="Motšo – Noord-Sotho" lang="nso" hreflang="nso" data-title="Motšo" data-language-autonym="Sesotho sa Leboa" data-language-local-name="Noord-Sotho" class="interlanguage-link-target"><span>Sesotho sa Leboa</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Unitat_de_mesura" title="Unitat de mesura – Occitaans" lang="oc" hreflang="oc" data-title="Unitat de mesura" data-language-autonym="Occitan" data-language-local-name="Occitaans" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Lakkaantoo_safaraa" title="Lakkaantoo safaraa – Afaan Oromo" lang="om" hreflang="om" data-title="Lakkaantoo safaraa" data-language-autonym="Oromoo" data-language-local-name="Afaan Oromo" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%AE%E0%A8%BE%E0%A8%AA_%E0%A8%87%E0%A8%95%E0%A8%BE%E0%A8%88%E0%A8%86%E0%A8%82" title="ਮਾਪ ਇਕਾਈਆਂ – Punjabi" lang="pa" hreflang="pa" data-title="ਮਾਪ ਇਕਾਈਆਂ" 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/Jednostka_miary" title="Jednostka miary – Pools" lang="pl" hreflang="pl" data-title="Jednostka miary" data-language-autonym="Polski" data-language-local-name="Pools" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D8%AF_%D8%A7%D9%86%D8%AF%D8%A7%D8%B2%D9%87_%DA%A9%D9%88%D9%84%D9%88_%D9%88%D8%A7%D8%AD%D8%AF" title="د اندازه کولو واحد – Pasjtoe" lang="ps" hreflang="ps" data-title="د اندازه کولو واحد" data-language-autonym="پښتو" data-language-local-name="Pasjtoe" 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/Unidade_de_medida" title="Unidade de medida – Portugees" lang="pt" hreflang="pt" data-title="Unidade de medida" data-language-autonym="Português" data-language-local-name="Portugees" 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/Tupu" title="Tupu – Quechua" lang="qu" hreflang="qu" data-title="Tupu" data-language-autonym="Runa Simi" data-language-local-name="Quechua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Unitate_de_m%C4%83sur%C4%83" title="Unitate de măsură – Roemeens" lang="ro" hreflang="ro" data-title="Unitate de măsură" data-language-autonym="Română" data-language-local-name="Roemeens" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-rsk mw-list-item"><a href="https://rsk.wikipedia.org/wiki/%D0%9C%D0%B5%D1%80%D0%BD%D0%B8_%D1%94%D0%B4%D0%B8%D0%BD%D0%BA%D0%B8" title="Мерни єдинки – Pannonian Rusyn" lang="rsk" hreflang="rsk" data-title="Мерни єдинки" data-language-autonym="Руски" data-language-local-name="Pannonian Rusyn" class="interlanguage-link-target"><span>Руски</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%95%D0%B4%D0%B8%D0%BD%D0%B8%D1%86%D1%8B_%D1%84%D0%B8%D0%B7%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D1%85_%D0%B2%D0%B5%D0%BB%D0%B8%D1%87%D0%B8%D0%BD" title="Единицы физических величин – Russisch" lang="ru" hreflang="ru" data-title="Единицы физических величин" data-language-autonym="Русский" data-language-local-name="Russisch" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Unidade_de_medida" title="Unidade de medida – Sardijns" lang="sc" hreflang="sc" data-title="Unidade de medida" data-language-autonym="Sardu" data-language-local-name="Sardijns" 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/Unitati_di_misura" title="Unitati di misura – Siciliaans" lang="scn" hreflang="scn" data-title="Unitati di misura" data-language-autonym="Sicilianu" data-language-local-name="Siciliaans" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Mjerne_jedinice" title="Mjerne jedinice – Servo-Kroatisch" lang="sh" hreflang="sh" data-title="Mjerne jedinice" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Servo-Kroatisch" 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%92%E0%B6%9A%E0%B6%9A_%E0%B7%83%E0%B7%84_%E0%B6%B8%E0%B7%8F%E0%B6%B1" title="ඒකක සහ මාන – Singalees" lang="si" hreflang="si" data-title="ඒකක සහ මාන" data-language-autonym="සිංහල" data-language-local-name="Singalees" 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/Unit_of_measurement" title="Unit of measurement – Simple English" lang="en-simple" hreflang="en-simple" data-title="Unit of measurement" 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/Fyzik%C3%A1lna_jednotka" title="Fyzikálna jednotka – Slowaaks" lang="sk" hreflang="sk" data-title="Fyzikálna jednotka" data-language-autonym="Slovenčina" data-language-local-name="Slowaaks" 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/Merska_enota" title="Merska enota – Sloveens" lang="sl" hreflang="sl" data-title="Merska enota" data-language-autonym="Slovenščina" data-language-local-name="Sloveens" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sn mw-list-item"><a href="https://sn.wikipedia.org/wiki/Chiyero_chekupimisa" title="Chiyero chekupimisa – Shona" lang="sn" hreflang="sn" data-title="Chiyero chekupimisa" data-language-autonym="ChiShona" data-language-local-name="Shona" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Nj%C3%ABsia_mat%C3%ABse" title="Njësia matëse – Albanees" lang="sq" hreflang="sq" data-title="Njësia matëse" data-language-autonym="Shqip" data-language-local-name="Albanees" 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%80%D0%BD%D0%B5_%D1%98%D0%B5%D0%B4%D0%B8%D0%BD%D0%B8%D1%86%D0%B5" title="Мерне јединице – Servisch" lang="sr" hreflang="sr" data-title="Мерне јединице" data-language-autonym="Српски / srpski" data-language-local-name="Servisch" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/M%C3%A5ttenhet" title="Måttenhet – Zweeds" lang="sv" hreflang="sv" data-title="Måttenhet" data-language-autonym="Svenska" data-language-local-name="Zweeds" 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/Kizio" title="Kizio – Swahili" lang="sw" hreflang="sw" data-title="Kizio" 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%B2%E0%AE%95%E0%AF%81_(%E0%AE%85%E0%AE%B3%E0%AE%B5%E0%AF%88%E0%AE%AF%E0%AE%BF%E0%AE%AF%E0%AE%B2%E0%AF%8D)" title="அலகு (அளவையியல்) – Tamil" lang="ta" hreflang="ta" data-title="அலகு (அளவையியல்)" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%AA%E0%B1%8D%E0%B0%B0%E0%B0%AE%E0%B0%BE%E0%B0%A3%E0%B0%82" title="ప్రమాణం – Telugu" lang="te" hreflang="te" data-title="ప్రమాణం" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%92%D0%BE%D2%B3%D0%B8%D0%B4%D2%B3%D0%BE%D0%B8_%D0%B1%D1%83%D0%B7%D1%83%D1%80%D0%B3%D0%B8%D2%B3%D0%BE%D0%B8_%D1%84%D0%B8%D0%B7%D0%B8%D0%BA%D3%A3" title="Воҳидҳои бузургиҳои физикӣ – Tadzjieks" lang="tg" hreflang="tg" data-title="Воҳидҳои бузургиҳои физикӣ" data-language-autonym="Тоҷикӣ" data-language-local-name="Tadzjieks" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%AB%E0%B8%99%E0%B9%88%E0%B8%A7%E0%B8%A2%E0%B8%A7%E0%B8%B1%E0%B8%94" title="หน่วยวัด – Thai" lang="th" hreflang="th" data-title="หน่วยวัด" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/%C3%96l%C3%A7%C3%BC_birimi" title="Ölçü birimi – Turks" lang="tr" hreflang="tr" data-title="Ölçü birimi" 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</div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Units_of_measure" hreflang="en"><span>Wikimedia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q47574" title="Koppeling naar item in verbonden gegevensrepository [g]" accesskey="g"><span>Wikidata-item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Paginahulpmiddelen"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Uiterlijk"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Uiterlijk</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">naar zijbalk verplaatsen</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">verbergen</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Uit Wikipedia, de vrije encyclopedie</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="nl" dir="ltr"><p>Een <b>natuurkundige eenheid</b> of kortweg <b>eenheid</b> is een maat waarin <a href="/wiki/Natuurkundige_grootheid" title="Natuurkundige grootheid">natuurkundige grootheden</a> <a href="/wiki/Numeriek" title="Numeriek">numeriek</a> kunnen worden uitgedrukt. Eenvoudiger gezegd: een grootheid is iets wat kan worden gemeten, zoals de <a href="/wiki/Lengte_(meetkunde)" title="Lengte (meetkunde)">lengte</a>. Een eenheid is de hoeveelheid waarin de gemeten grootheid wordt uitgedrukt, bijvoorbeeld de <a href="/wiki/Meter" title="Meter">meter</a>. Het aantal eenheden heet de numerieke waarde; deze is zelf een <a href="/wiki/Dimensieloze_grootheid" title="Dimensieloze grootheid">dimensieloos getal</a>. </p><p>De waarde van de grootheid kan worden beschouwd als het product van de numerieke waarde en de eenheid. De <a href="/wiki/Dimensie_van_een_grootheid" title="Dimensie van een grootheid">dimensie</a> van de grootheid is dezelfde als die van de eenheid. </p><p>Bijvoorbeeld, de afstand van de aarde tot de maan is gemiddeld 384&#160;440 <a href="/wiki/Kilometer" title="Kilometer">kilometer</a>, ofwel 0,000&#160;000&#160;040&#160;64 <a href="/wiki/Lichtjaar" title="Lichtjaar">lichtjaar</a>, ofwel 1&#160;261&#160;300&#160;000 <a href="/wiki/Voet_(lengtemaat)" title="Voet (lengtemaat)">voet</a>. <i>Kilometer</i>, <i>lichtjaar</i> en <i>voet</i> zijn eenheden van lengte. </p> <div class="hatnote" style="margin-bottom:0.5em; padding:0.5em 0 0.5em 1.6em; font-size:95%;" role="note"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/1rightarrow_blue.svg/15px-1rightarrow_blue.svg.png" decoding="async" width="15" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/1rightarrow_blue.svg/23px-1rightarrow_blue.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ee/1rightarrow_blue.svg/30px-1rightarrow_blue.svg.png 2x" data-file-width="480" data-file-height="480" /></span></span> <i>Zie <a href="/wiki/Natuurkundige_grootheden_en_eenheden" title="Natuurkundige grootheden en eenheden">natuurkundige grootheden en eenheden</a> voor een overzicht van grootheden en eenheden.</i></div> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="SI-eenheden">SI-eenheden</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;veaction=edit&amp;section=1" title="Bewerk dit kopje: SI-eenheden" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;action=edit&amp;section=1" title="De broncode bewerken van de sectie: SI-eenheden"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Voor wetenschappelijke toepassingen mogen alleen eenheden worden gebruikt die deel uitmaken van het <a href="/wiki/SI-stelsel" title="SI-stelsel">SI-stelsel</a> (afkorting van <i>Système International d’Unités</i>) of die rechtstreeks afgeleid zijn van een SI-eenheid. Er zijn 7 <a href="/wiki/SI-basiseenheid" title="SI-basiseenheid">SI-basiseenheden</a>. </p><p>Enkele voorbeelden van eenheden die rechtstreeks afgeleid zijn van de zeven SI-basiseenheden: </p> <ul><li><a href="/wiki/Newton_(eenheid)" title="Newton (eenheid)">newton</a>: 1 N = 1&#160;kg · m · s<sup>−2</sup></li> <li><a href="/wiki/Volt_(eenheid)" title="Volt (eenheid)">volt</a> 1 V = 1&#160;kg · m<sup>2</sup> · s<sup>−3</sup> · A<sup>−1</sup></li></ul> <p>Meer afgeleide eenheden staan vermeld op <a href="/wiki/Natuurkundige_grootheden_en_eenheden" title="Natuurkundige grootheden en eenheden">Natuurkundige grootheden en eenheden</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Rekenkundige_bewerkingen">Rekenkundige bewerkingen</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;veaction=edit&amp;section=2" title="Bewerk dit kopje: Rekenkundige bewerkingen" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;action=edit&amp;section=2" title="De broncode bewerken van de sectie: Rekenkundige bewerkingen"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In rekenkundige bewerkingen met grootheden horen het getal en de eenheid waaruit een grootheid bestaat bij elkaar, en gelden voor de eenheden dezelfde rekenregels als voor getallen. </p><p>Voorbeeld: een vel papier van het formaat A4 de afmetingen: </p> <dl><dd>21 cm × 29,7 cm</dd></dl> <p>De oppervlakte is het product daarvan: 623,7&#160;cm² </p><p>Bij het vermenigvuldigen van afmetingen is een mogelijke complicatie dat men kortweg de eenheid maar eenmaal vermeldt, bijvoorbeeld: </p> <dl><dd>21 × 29,7 cm</dd></dl> <p>wat men dan niet meer eenvoudig als vermenigvuldiging kan uitwerken (men zou op 623,7&#160;cm uitkomen, een lengte). </p><p>Ook verschillende eenheden kunnen vermenigvuldigd worden, bijvoorbeeld: </p> <dl><dd>230 V × 3 A = 690 VA = 690 W</dd></dl> <p>Optellen is alleen mogelijk als de eenheden gelijk zijn: 5&#160;cm + 8&#160;cm = 13&#160;cm </p><p>Een voorvoegsel heeft hogere prioriteit. Een eenheid als km² (vierkante kilometer) moet worden gelezen als (km)² </p> <div class="mw-heading mw-heading2"><h2 id="Schrijfwijze">Schrijfwijze</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;veaction=edit&amp;section=3" title="Bewerk dit kopje: Schrijfwijze" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;action=edit&amp;section=3" title="De broncode bewerken van de sectie: Schrijfwijze"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Voor de namen en de symbolen van eenheden gelden <a href="/wiki/SI-eenheden#Schrijfwijze" class="mw-redirect" title="SI-eenheden">SI-regels voor de schrijfwijze</a>, die door het BIPM worden aanbevolen. </p><p>Zo wordt bijvoorbeeld aanbevolen te schrijven "km/h" of "kilometer per uur", maar niet "km per uur". </p><p>Gemengd gebruik van symbolen en voluit geschreven eenheden wordt afgeraden, daarbij geldt de breukstreep als symbool; dus niet "km/uur", "km per uur" of "kilometer/uur". </p><p>Symbolen voor eenheden worden over het algemeen gecombineerd met een hoeveelheid in cijfers, dus 5&#160;km, 30 kV, 0,2 Pa, maar niet: "Na een paar km hadden we een lekke band" of "Je hebt een accu van twaalf V nodig." Wel kan men schrijven: "Je hebt een accu van 12 V nodig." of "Je hebt een accu van twaalf volt nodig." </p><p>Hoewel het symbool van eenheden die genoemd zijn naar een persoon, met een hoofdletter geschreven worden, is in de meeste gevallen de naam van de eenheid met een kleine letter. </p><p>Eenheden worden vaak verkeerd geschreven: met een hoofdletter als dat niet moet, of andersom. </p> <ul><li>Voor de <i>symbolen</i> voor eenheden geldt dat de spelling zowel als het gebruik van hoofd- en kleine letters onafhankelijk van de taal in hele wereld gelijk is. De regel is dat het symbool met een kleine letter wordt geschreven, tenzij de <i>naam</i> van de eenheid van een eigennaam is afgeleid: in dat geval wordt de eerste letter een hoofdletter. Enkele voorbeelden: <ul><li>m (de meter is niet van een naam afgeleid),</li> <li>V (de volt is genoemd naar <a href="/wiki/Alessandro_Volta" title="Alessandro Volta">Alessandro Volta</a>),</li></ul></li> <li>Decimale voorvoegsels voor <i>kilo</i> en kleiner worden met een kleine letter geschreven, die voor <i>mega</i> en hoger met een hoofdletter.</li> <li>Achter een symbool komt geen punt (het is geen afkorting, maar een <i>symbool</i>), behalve natuurlijk aan het einde van een zin. Schrijfwijzen als K.M. of KM (voor kilometer) zijn onjuist.</li> <li>symbolen voor <i>grootheden</i> worden <i><a href="/wiki/Cursief" title="Cursief">cursief</a></i> geschreven, die voor <i>eenheden</i> worden rechtop (<i><a href="/wiki/Romein_(lettertype)" title="Romein (lettertype)">romein</a></i>) geschreven.</li> <li>Symbolen hebben geen meervoud, het meervoud van km is dus km en niet kms.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Meervoud_in_het_Nederlands">Meervoud in het Nederlands</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;veaction=edit&amp;section=4" title="Bewerk dit kopje: Meervoud in het Nederlands" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;action=edit&amp;section=4" title="De broncode bewerken van de sectie: Meervoud in het Nederlands"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Een merkwaardigheid in het Nederlands is dat van de meeste eenheden het meervoud niet gebruikelijk is als ze direct worden voorafgegaan door een getal.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">&#91;</span>1<span class="cite-bracket">&#93;</span></a></sup> </p> <ul><li>3 V - 3 volt - drie volt</li> <li>een paar volt - enkele volts<sup id="cite_ref-geengetal_2-0" class="reference"><a href="#cite_note-geengetal-2"><span class="cite-bracket">&#91;</span>2<span class="cite-bracket">&#93;</span></a></sup> - duizenden volts</li> <li>3&#160;km - 3 kilometer - drie kilometer(s)</li> <li>een paar kilometer - enkele kilometers<sup id="cite_ref-geengetal_2-1" class="reference"><a href="#cite_note-geengetal-2"><span class="cite-bracket">&#91;</span>2<span class="cite-bracket">&#93;</span></a></sup> - een tiental kilometers<sup id="cite_ref-geengetal_2-2" class="reference"><a href="#cite_note-geengetal-2"><span class="cite-bracket">&#91;</span>2<span class="cite-bracket">&#93;</span></a></sup></li> <li>2 Pa - 2 pascal - twee pascal</li> <li>een paar pascal - enkele pascal - tientallen pascal</li> <li>24 h - 24 uur - vierentwintig uur (uren) - tien lange uren<sup id="cite_ref-geengetal_2-3" class="reference"><a href="#cite_note-geengetal-2"><span class="cite-bracket">&#91;</span>2<span class="cite-bracket">&#93;</span></a></sup></li> <li>3 s - 3 sec<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">&#91;</span>3<span class="cite-bracket">&#93;</span></a></sup> - 3 seconden<sup id="cite_ref-tijd_4-0" class="reference"><a href="#cite_note-tijd-4"><span class="cite-bracket">&#91;</span>4<span class="cite-bracket">&#93;</span></a></sup> - drie seconden<sup id="cite_ref-tijd_4-1" class="reference"><a href="#cite_note-tijd-4"><span class="cite-bracket">&#91;</span>4<span class="cite-bracket">&#93;</span></a></sup></li> <li>60 min - 60 minuten<sup id="cite_ref-tijd_4-2" class="reference"><a href="#cite_note-tijd-4"><span class="cite-bracket">&#91;</span>4<span class="cite-bracket">&#93;</span></a></sup> - zestig minuten<sup id="cite_ref-tijd_4-3" class="reference"><a href="#cite_note-tijd-4"><span class="cite-bracket">&#91;</span>4<span class="cite-bracket">&#93;</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="Omrekenen_van_eenheden">Omrekenen van eenheden</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;veaction=edit&amp;section=5" title="Bewerk dit kopje: Omrekenen van eenheden" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;action=edit&amp;section=5" title="De broncode bewerken van de sectie: Omrekenen van eenheden"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Soms kunnen voor dezelfde grootheid verschillende eenheden gebruikt worden. Een voorbeeld is de grootheid temperatuur, die kan worden uitgedrukt in graden <a href="/wiki/Celsius" title="Celsius">Celsius</a> maar ook in <a href="/wiki/Kelvin_(eenheid)" title="Kelvin (eenheid)">kelvin</a>. Het wordt bij gebruik van eenheden uit verschillende systemen al gauw lastig om met natuurkundige formules te werken. De voornaamste drijfveer voor het ontstaan van het SI was om dit tot een minimum te beperken. </p> <div class="mw-heading mw-heading2"><h2 id="Metrieke_stelsel">Metrieke stelsel</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;veaction=edit&amp;section=6" title="Bewerk dit kopje: Metrieke stelsel" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;action=edit&amp;section=6" title="De broncode bewerken van de sectie: Metrieke stelsel"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Hoewel de eerste voorloper van het SI (het <a href="/wiki/Metriek_stelsel" title="Metriek stelsel">metrieke stelsel</a>) opgesteld is tijdens van de <a href="/wiki/Franse_Revolutie" title="Franse Revolutie">Franse Revolutie</a>, was <a href="/wiki/Willem_I_der_Nederlanden" title="Willem I der Nederlanden">koning Willem I</a> de eerste die het tot wettelijk bindend systeem verhief. Hij wilde daarmee de eenheid in zijn koninkrijk bevorderen. Sindsdien is iedere staat op aarde, behalve de VS hem daarin gevolgd. </p> <div class="mw-heading mw-heading2"><h2 id="EU-richtlijn">EU-richtlijn</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;veaction=edit&amp;section=7" title="Bewerk dit kopje: EU-richtlijn" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;action=edit&amp;section=7" title="De broncode bewerken van de sectie: EU-richtlijn"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 1979 werd het gebruik van het SI-stelsel dwingend voorgeschreven in het economisch verkeer, voor doeleinden van volksgezondheid en openbare veiligheid en voor bestuursrechtelijke handelingen, door de totstandkoming van Richtlijn 80/181/EEG van de Raad van de Europese Gemeenschappen van 20 december 1979 inzake de onderlinge aanpassing van de wetgevingen der lidstaten op het gebied van de meeteenheden (PbEG L39, Meeteenhedenrichtlijn).<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">&#91;</span>5<span class="cite-bracket">&#93;</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Nederlandse_wetgeving">Nederlandse wetgeving</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;veaction=edit&amp;section=8" title="Bewerk dit kopje: Nederlandse wetgeving" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;action=edit&amp;section=8" title="De broncode bewerken van de sectie: Nederlandse wetgeving"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Op basis van de <a href="/wiki/Metrologiewet" title="Metrologiewet">Metrologiewet</a> is er het Meeteenhedenbesluit 2006,<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">&#91;</span>6<span class="cite-bracket">&#93;</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">&#91;</span>7<span class="cite-bracket">&#93;</span></a></sup> dat de erkende eenheden vaststelt. Dit zijn naast de SI-eenheden (met tussen haakjes het officiële symbool): </p> <ul><li><a href="/wiki/Minuut_(tijd)" title="Minuut (tijd)">minuut</a> (min), <a href="/wiki/Uur" title="Uur">uur</a> (h),<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">&#91;</span>8<span class="cite-bracket">&#93;</span></a></sup> <a href="/wiki/Dag" title="Dag">dag</a> (d)</li> <li><a href="/wiki/Ton_(massa)" title="Ton (massa)">ton</a> (t): 1 t = 1 Mg</li> <li>volle hoek: 1 volle hoek = 2 π rad</li> <li><a href="/wiki/Liter" title="Liter">liter</a> (l of L)</li> <li><a href="/wiki/Bar_(druk)" title="Bar (druk)">bar</a>: 1 bar = 100 kPa</li> <li><a href="/wiki/Booggraad" title="Booggraad">graad</a> (°), <a href="/wiki/Boogminuut" title="Boogminuut">minuut</a> ('), <a href="/wiki/Boogseconde" title="Boogseconde">seconde</a> ("), <a href="/wiki/Decimale_graad" title="Decimale graad">decimale graad</a> of gon</li> <li>geünificeerde <a href="/wiki/Atomaire_massa-eenheid" title="Atomaire massa-eenheid">atomaire massa-eenheid</a> u</li> <li><a href="/wiki/Elektronvolt" title="Elektronvolt">elektronvolt</a> (eV)</li> <li><a href="/wiki/Dioptrie" title="Dioptrie">dioptrie</a></li> <li><a href="/wiki/Are" title="Are">are</a> (a) (hectoare (ha) wordt afgekort tot hectare)</li> <li><a href="/wiki/Barn_(eenheid)" title="Barn (eenheid)">barn</a> (b)</li> <li><a href="/wiki/Metriekkaraat" class="mw-redirect" title="Metriekkaraat">metriekkaraat</a></li> <li><a href="/wiki/Tex_(eenheid)" title="Tex (eenheid)">tex</a></li> <li><a href="/wiki/Mm_Hg" class="mw-redirect" title="Mm Hg">millimeter kwik</a> (mm Hg)</li> <li><a href="/wiki/Decibel_(eenheid)" title="Decibel (eenheid)">decibel</a> A (<a href="/wiki/DB(A)" title="DB(A)">dB(A)</a>)</li> <li><a href="/w/index.php?title=EEG-natuurgewicht&amp;action=edit&amp;redlink=1" class="new" title="EEG-natuurgewicht (de pagina bestaat niet)">EEG-natuurgewicht</a></li> <li><a href="/wiki/Volumeprocent" title="Volumeprocent">volumeprocent</a> (% vol)</li> <li><a href="/wiki/Massafractie" title="Massafractie">massaprocent</a> (% mas)</li></ul> <p>Seconde en minuut zijn dus officiële volle namen van eenheden met elk twee betekenissen. </p><p>Voor enkele eenheden zijn er beperkingen tot bepaalde toepassingen en worden de voorvoegsels niet gebruikt. </p> <div class="mw-heading mw-heading2"><h2 id="Zie_ook">Zie ook</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;veaction=edit&amp;section=9" title="Bewerk dit kopje: Zie ook" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;action=edit&amp;section=9" title="De broncode bewerken van de sectie: Zie ook"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/SI-stelsel" title="SI-stelsel">SI-stelsel</a>, de internationale standaard voor natuurkundige eenheden.</li> <li><a href="/wiki/Natuurlijke_eenheden" title="Natuurlijke eenheden">Natuurlijke eenheden</a>, de meest <i>natuurlijke</i> definitie van eenheden.</li> <li><a href="/wiki/Planck-eenheden" title="Planck-eenheden">Planck-eenheden</a> en <a href="/wiki/Atomaire_eenheden" title="Atomaire eenheden">atomaire eenheden</a>, twee voorbeelden van natuurlijke eenheidssystemen.</li> <li><a href="/wiki/Hoeveelheidsaanduidingenbesluit" title="Hoeveelheidsaanduidingenbesluit">Hoeveelheidsaanduidingenbesluit</a></li> <li><a href="/wiki/Grootheid#Niet-eenduidige_verhoudingen_tussen_eenheden_van_tijd" title="Grootheid">Niet-eenduidige verhoudingen tussen eenheden van tijd</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Noten">Noten</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;veaction=edit&amp;section=10" title="Bewerk dit kopje: Noten" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Natuurkundige_eenheid&amp;action=edit&amp;section=10" title="De broncode bewerken van de sectie: Noten"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist" style="list-style-type: decimal;"><div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text">Dit geldt ook voor het woord <i>paar</i> (tweetal) en voor valuta (<i>euro</i>, <i>dollar</i> enz.)</span> </li> <li id="cite_note-geengetal-2"><span class="mw-cite-backlink">↑ <a href="#cite_ref-geengetal_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-geengetal_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-geengetal_2-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-geengetal_2-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text">Eenheid wordt niet direct door een getal voorafgegaan en dan wordt het meervoud gebruikt.</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text">Wordt afgekeurd</span> </li> <li id="cite_note-tijd-4"><span class="mw-cite-backlink">↑ <a href="#cite_ref-tijd_4-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-tijd_4-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-tijd_4-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-tijd_4-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text">De meeste eenheden van tijd (behalve uur, jaar en soms maand) krijgen wél een meervoud</span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text">M.J. Quartel, <a rel="nofollow" class="external text" href="http://books.google.nl/books?id=ih7xooKXJLwC&amp;pg=PA11&amp;dq=%22meeteenheden%22+%22verkeer%22&amp;hl=nl&amp;sa=X&amp;ei=QD-gT7bvMIfsOairqc0P&amp;ved=0CDQQ6AEwAA#v=onepage&amp;q=%22meeteenheden%22%20%22verkeer%22&amp;f=false">Internationale regelgeving metrologie, p. 11</a></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://zoek.officielebekendmakingen.nl/stb-2006-575.html">Besluit van 12 oktober 2006, tot uitvoering van artikel 2 van de Metrologiewet en ter implementatie van enkele Europese richtlijnen</a> - oorspronkelijke tekst van het Meeteenhedenbesluit 2006, met toelichting.</span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><a href="#cite_ref-7">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://wetten.overheid.nl/BWBR0020422">Huidige tekst van het Meeteenhedenbesluit 2006</a> (zonder toelichting)</span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><a href="#cite_ref-8">↑</a></span> <span class="reference-text">Symbool u wordt afgeraden</span> </li> </ol></div></div> <!-- NewPP limit report Parsed by mw‐api‐int.codfw.main‐849f99967d‐5nr9f Cached time: 20241123162050 Cache expiry: 2592000 Reduced expiry: false Complications: [show‐toc] CPU time usage: 0.050 seconds Real time usage: 0.067 seconds Preprocessor visited node count: 273/1000000 Post‐expand include size: 802/2097152 bytes Template argument size: 273/2097152 bytes Highest expansion depth: 6/100 Expensive parser function count: 0/500 Unstrip recursion depth: 0/20 Unstrip post‐expand size: 4958/5000000 bytes Lua time usage: 0.002/10.000 seconds Lua memory usage: 586361/52428800 bytes Number of Wikibase entities loaded: 0/400 --> <!-- Transclusion expansion time report (%,ms,calls,template) 100.00% 33.288 1 -total 59.86% 19.926 1 Sjabloon:References 10.99% 3.657 1 Sjabloon:Zie_ook 4.62% 1.539 1 Sjabloon:Zie_hoofdartikel --> <!-- Saved in parser cache with key nlwiki:pcache:idhash:7437-0!canonical and timestamp 20241123162050 and revision id 68188733. 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