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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-Definitie" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Definitie"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Definitie</span> </div> </a> <ul id="toc-Definitie-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Wegwijzer_lichtgrootheden_en_-eenheden" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Wegwijzer_lichtgrootheden_en_-eenheden"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Wegwijzer lichtgrootheden en -eenheden</span> </div> </a> <ul id="toc-Wegwijzer_lichtgrootheden_en_-eenheden-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">3</span> <span>Zie ook</span> </div> </a> <ul id="toc-Zie_ook-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Literatuur" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Literatuur"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Literatuur</span> </div> </a> <ul id="toc-Literatuur-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Externe_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Externe_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Externe links</span> </div> </a> <ul id="toc-Externe_links-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Noten_en_referenties" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Noten_en_referenties"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Noten en referenties</span> </div> </a> <ul id="toc-Noten_en_referenties-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">Luminantie</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 42 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-42" 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">42 talen</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Luminansie" title="Luminansie – Afrikaans" lang="af" hreflang="af" data-title="Luminansie" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A7%D8%B3%D8%AA%D8%B6%D9%88%D8%A7%D8%A1" title="استضواء – Arabisch" lang="ar" hreflang="ar" data-title="استضواء" data-language-autonym="العربية" data-language-local-name="Arabisch" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bar mw-list-item"><a href="https://bar.wikipedia.org/wiki/Leichtdichtn" title="Leichtdichtn – Beiers" lang="bar" hreflang="bar" data-title="Leichtdichtn" data-language-autonym="Boarisch" data-language-local-name="Beiers" class="interlanguage-link-target"><span>Boarisch</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%AF%D1%80%D0%BA%D0%B0%D1%81%D1%86%D1%8C" title="Яркасць – Belarussisch" lang="be" hreflang="be" data-title="Яркасць" 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%AF%D1%80%D0%BA%D0%B0%D1%81%D1%8C%D1%86%D1%8C" title="Яркасьць – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Яркасьць" 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-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Lumin%C3%A0ncia" title="Luminància – Catalaans" lang="ca" hreflang="ca" data-title="Luminància" data-language-autonym="Català" data-language-local-name="Catalaans" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Jas" title="Jas – Tsjechisch" lang="cs" hreflang="cs" data-title="Jas" 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%AF%D0%BB%D1%82%C4%83%D1%80%D0%B0%D0%B2" title="Ялтăрав – Tsjoevasjisch" lang="cv" hreflang="cv" data-title="Ялтăрав" data-language-autonym="Чӑвашла" data-language-local-name="Tsjoevasjisch" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Leuchtdichte" title="Leuchtdichte – Duits" lang="de" hreflang="de" data-title="Leuchtdichte" 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%9B%CE%B1%CE%BC%CF%80%CF%81%CF%8C%CF%84%CE%B7%CF%84%CE%B1" title="Λαμπρότητα – Grieks" lang="el" hreflang="el" data-title="Λαμπρότητα" 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/Luminance" title="Luminance – Engels" lang="en" hreflang="en" data-title="Luminance" data-language-autonym="English" data-language-local-name="Engels" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Luminancia" title="Luminancia – Spaans" lang="es" hreflang="es" data-title="Luminancia" 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/Heledus" title="Heledus – Estisch" lang="et" hreflang="et" data-title="Heledus" 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/Luminantzia" title="Luminantzia – Baskisch" lang="eu" hreflang="eu" data-title="Luminantzia" data-language-autonym="Euskara" data-language-local-name="Baskisch" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%86%D9%88%D8%B1%D8%AA%D8%A7%D8%A8%DB%8C" title="نورتابی – Perzisch" lang="fa" hreflang="fa" data-title="نورتابی" 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/Luminanssi" title="Luminanssi – Fins" lang="fi" hreflang="fi" data-title="Luminanssi" 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/Luminance" title="Luminance – Frans" lang="fr" hreflang="fr" data-title="Luminance" data-language-autonym="Français" data-language-local-name="Frans" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Svjetljivost" title="Svjetljivost – Kroatisch" lang="hr" hreflang="hr" data-title="Svjetljivost" data-language-autonym="Hrvatski" data-language-local-name="Kroatisch" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/F%C3%A9nys%C5%B1r%C5%B1s%C3%A9g" title="Fénysűrűség – Hongaars" lang="hu" hreflang="hu" data-title="Fénysűrűség" 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%8A%D5%A1%D5%B5%D5%AE%D5%A1%D5%BC%D5%B8%D6%82%D5%A9%D5%B5%D5%B8%D6%82%D5%B6" title="Պայծառություն – Armeens" lang="hy" hreflang="hy" data-title="Պայծառություն" data-language-autonym="Հայերեն" data-language-local-name="Armeens" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Luminansi" title="Luminansi – Indonesisch" lang="id" hreflang="id" data-title="Luminansi" 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-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Luminanza_(fisica)" title="Luminanza (fisica) – Italiaans" lang="it" hreflang="it" data-title="Luminanza (fisica)" 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/%E8%BC%9D%E5%BA%A6_(%E5%85%89%E5%AD%A6)" title="輝度 (光学) – Japans" lang="ja" hreflang="ja" data-title="輝度 (光学)" 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-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%96%D0%B0%D1%80%D1%8B%D2%9B%D1%82%D1%8B%D2%9B" title="Жарықтық – Kazachs" lang="kk" hreflang="kk" data-title="Жарықтық" 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/%ED%9C%98%EB%8F%84" title="휘도 – Koreaans" lang="ko" hreflang="ko" data-title="휘도" data-language-autonym="한국어" data-language-local-name="Koreaans" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Skaistis_(fizikinis_dydis)" title="Skaistis (fizikinis dydis) – Litouws" lang="lt" hreflang="lt" data-title="Skaistis (fizikinis dydis)" data-language-autonym="Lietuvių" data-language-local-name="Litouws" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%91%D0%BB%D0%B5%D1%81%D0%BA%D0%B0%D0%B2%D0%BE%D1%81%D1%82" title="Блескавост – Macedonisch" lang="mk" hreflang="mk" data-title="Блескавост" 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%B2%E0%B5%82%E0%B4%AE%E0%B4%BF%E0%B4%A8%E0%B5%BB%E0%B4%B8%E0%B5%8D" title="ലൂമിനൻസ് – Malayalam" lang="ml" hreflang="ml" data-title="ലൂമിനൻസ്" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Luminans" title="Luminans – Noors - Nynorsk" lang="nn" hreflang="nn" data-title="Luminans" 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/Luminans" title="Luminans – Noors - Bokmål" lang="nb" hreflang="nb" data-title="Luminans" 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-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Lumin%C3%A0ncia" title="Luminància – Occitaans" lang="oc" hreflang="oc" data-title="Luminància" data-language-autonym="Occitan" data-language-local-name="Occitaans" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Luminancja" title="Luminancja – Pools" lang="pl" hreflang="pl" data-title="Luminancja" data-language-autonym="Polski" data-language-local-name="Pools" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Lumin%C3%A2ncia" title="Luminância – Portugees" lang="pt" hreflang="pt" data-title="Luminância" data-language-autonym="Português" data-language-local-name="Portugees" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%AF%D1%80%D0%BA%D0%BE%D1%81%D1%82%D1%8C" title="Яркость – Russisch" lang="ru" hreflang="ru" data-title="Яркость" data-language-autonym="Русский" data-language-local-name="Russisch" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Svjetlo%C4%87a" title="Svjetloća – Servo-Kroatisch" lang="sh" hreflang="sh" data-title="Svjetloća" 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-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Jas" title="Jas – Slowaaks" lang="sk" hreflang="sk" data-title="Jas" 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/Svetlost" title="Svetlost – Sloveens" lang="sl" hreflang="sl" data-title="Svetlost" data-language-autonym="Slovenščina" data-language-local-name="Sloveens" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A1%D1%98%D0%B0%D1%98%D0%BD%D0%BE%D1%81%D1%82_(%D0%BC%D0%B8%D0%BD%D0%B5%D1%80%D0%B0%D0%BB%D0%BE%D0%B3%D0%B8%D1%98%D0%B0)" title="Сјајност (минералогија) – Servisch" lang="sr" hreflang="sr" data-title="Сјајност (минералогија)" 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/Luminans" title="Luminans – Zweeds" lang="sv" hreflang="sv" data-title="Luminans" data-language-autonym="Svenska" data-language-local-name="Zweeds" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%84%E0%B8%A7%E0%B8%B2%E0%B8%A1%E0%B8%AA%E0%B8%A7%E0%B9%88%E0%B8%B2%E0%B8%87_(%E0%B8%97%E0%B8%B1%E0%B8%A8%E0%B8%99%E0%B8%A8%E0%B8%B2%E0%B8%AA%E0%B8%95%E0%B8%A3%E0%B9%8C)" title="ความสว่าง (ทัศนศาสตร์) – Thai" lang="th" hreflang="th" data-title="ความสว่าง (ทัศนศาสตร์)" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%AF%D1%81%D0%BA%D1%80%D0%B0%D0%B2%D1%96%D1%81%D1%82%D1%8C" title="Яскравість – Oekraïens" lang="uk" hreflang="uk" data-title="Яскравість" data-language-autonym="Українська" data-language-local-name="Oekraïens" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E4%BA%AE%E5%BA%A6" title="亮度 – Chinees" lang="zh" hreflang="zh" data-title="亮度" data-language-autonym="中文" data-language-local-name="Chinees" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q355386#sitelinks-wikipedia" title="Taalkoppelingen bewerken" class="wbc-editpage">Koppelingen bewerken</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Naamruimten"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Luminantie" 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lang="nl" dir="ltr"><div id="sjabloon_zie_artikel" class="hatnote" style="padding:0.5em; margin-bottom:0.5em; border-bottom:1px solid #aaa; 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>Dit artikel behandelt </i>luminantie<i>, dat is een maat voor de helderheid van <b>uitgestraald</b> of <b>gereflecteerd</b> licht. Voor de beschrijving van de <b>invallende</b> lichtstroomdichtheid (ook wel </i>illuminantie<i> genoemd) zie <a href="/wiki/Verlichtingssterkte" title="Verlichtingssterkte">Verlichtingssterkte</a>.</i> </div> <table class="wikitable" style="float: right; margin-left: 1em;"> <tbody><tr> <th></th> <th>Luminantie<br />(cd/m<sup>2</sup>) </th></tr> <tr> <td>Zonneschijf ’s middags</td> <td>1,6 · 10<sup>9</sup> </td></tr> <tr> <td>Witte led</td> <td>50·10<sup>6</sup> </td></tr> <tr> <td>Gloeidraad halogeenlamp</td> <td>20…30 · 10<sup>6</sup> </td></tr> <tr> <td>Zonneschijf aan de horizon</td> <td>6 · 10<sup>6</sup> </td></tr> <tr> <td>Matte gloeilamp 60 W</td> <td>120 · 10<sup>3</sup> </td></tr> <tr> <td>Koudwitte tl-buis T8</td> <td>11 · 10<sup>3</sup> </td></tr> <tr> <td>Gemiddelde heldere hemel</td> <td>8 · 10<sup>3</sup> </td></tr> <tr> <td>Led-reclamescherm</td> <td>5 · 10<sup>3</sup> </td></tr> <tr> <td>Maanoppervlak</td> <td>2,5 · 10<sup>3</sup> </td></tr> <tr> <td>Gemiddelde bedekte hemel</td> <td>2 · 10<sup>3</sup> </td></tr> <tr> <td>Tft-scherm wit</td> <td>ca. 150...500 </td></tr> <tr> <td>Kathodestraalbuis wit</td> <td>ca. 80...200 </td></tr> <tr> <td>Gele elektroluminescente lichtbron</td> <td>60 </td></tr> <tr> <td>Groene elektroluminescente lichtbron</td> <td>30 </td></tr> <tr> <td>Tft-scherm zwart</td> <td>ca. 0,15...0,8 </td></tr> <tr> <td>Nachtelijke hemel bij volle maan</td> <td>0,1 </td></tr> <tr> <td>Kathodestraalbuis zwart</td> <td>deels < 0,01 </td></tr> <tr> <td>Nachtelijke sterrenhemel</td> <td>1 · 10<sup>−3</sup> </td></tr> <tr> <td>Bewolkte nachtelijke hemel</td> <td>1…100 · 10<sup>−6</sup> </td></tr></tbody></table> <p>De <b>luminantie</b> (Engels: <i>luminance</i>, Duits: <i>Leuchtdichte</i>) is de <a href="/wiki/Fotometrie" title="Fotometrie">fotometrische</a> maat voor helderheid, namelijk de <a href="/wiki/Lichtsterkte_(fotometrie)" title="Lichtsterkte (fotometrie)">lichtsterkte</a> per oppervlakte-eenheid loodrecht op de kijkrichting. Hoewel het een eigenschap is van de lichtbron zelf, is het tevens de helderheid die een waarnemer ervaart, en wel onafhankelijk van zijn afstand tot de lichtbron (mits geen licht onderweg geabsorbeerd wordt): bij vergroting van de afstand tot een lichtbron wordt slechts de ruimtehoek kleiner, niet de luminantie. Het maakt ook niet uit of we het oppervlak waarop we de lichtsterkte per oppervlakte-eenheid bekijken bij de lichtbron, bij de waarnemer of ergens tussenin nemen. </p><p>Een lichtbron met een gegeven lichtsterkte lijkt helderder naarmate het oppervlak kleiner is. De luminantie beschrijft de helderheid van grotere lichtgevende oppervlakken. Voor de beschrijving van de helderheid van kleine of puntvormige lichtbronnen zijn daarentegen de <a href="/wiki/Lichtsterkte_(fotometrie)" title="Lichtsterkte (fotometrie)">lichtsterkte</a> en de <a href="/wiki/Verlichtingssterkte" title="Verlichtingssterkte">verlichtingssterkte</a> meer geschikt. </p><p>De <a href="/wiki/SI-stelsel" title="SI-stelsel">SI</a>-eenheid is <a href="/wiki/Candela_per_vierkante_meter" title="Candela per vierkante meter">candela per vierkante meter</a> (cd/m<sup>2</sup>). </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Definitie">Definitie</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Luminantie&veaction=edit&section=1" title="Bewerk dit kopje: Definitie" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Luminantie&action=edit&section=1" title="De broncode bewerken van de sectie: Definitie"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Als het stralend oppervlak niet vlak is of niet onder een rechte hoek wordt gezien, wordt de projectie ervan loodrecht op de kijkrichting genomen (hoek <i>θ</i>): </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle L={\frac {\mathrm {d} I}{\mathrm {d} A\cdot \cos(\theta )}}={\frac {\mathrm {d^{2}} \Phi }{\mathrm {d} A\cdot \cos(\theta )\mathrm {d} \omega }}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>L</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">d</mi> </mrow> <mi>I</mi> </mrow> <mrow> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">d</mi> </mrow> <mi>A</mi> <mo>⋅</mo> <mi>cos</mi> <mo>⁡</mo> <mo stretchy="false">(</mo> <mi>θ</mi> <mo stretchy="false">)</mo> </mrow> </mfrac> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mrow class="MJX-TeXAtom-ORD"> <msup> <mi mathvariant="normal">d</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mrow> <mi mathvariant="normal">Φ</mi> </mrow> <mrow> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">d</mi> </mrow> <mi>A</mi> <mo>⋅</mo> <mi>cos</mi> <mo>⁡</mo> <mo stretchy="false">(</mo> <mi>θ</mi> <mo stretchy="false">)</mo> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">d</mi> </mrow> <mi>ω</mi> </mrow> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle L={\frac {\mathrm {d} I}{\mathrm {d} A\cdot \cos(\theta )}}={\frac {\mathrm {d^{2}} \Phi }{\mathrm {d} A\cdot \cos(\theta )\mathrm {d} \omega }}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7b23b9015ae41cce32e5e57f1be2db99f36bc9af" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.671ex; width:33.642ex; height:6.509ex;" alt="{\displaystyle L={\frac {\mathrm {d} I}{\mathrm {d} A\cdot \cos(\theta )}}={\frac {\mathrm {d^{2}} \Phi }{\mathrm {d} A\cdot \cos(\theta )\mathrm {d} \omega }}}"></span></dd></dl> <p>Bij een Lambertstraler, bijvoorbeeld een <a href="/wiki/Zwarte_straler" title="Zwarte straler">zwarte straler</a>, en bij de reflectie van licht op een Lambertoppervlak, geldt de <a href="/wiki/Wet_van_Lambert" title="Wet van Lambert">wet van Lambert</a>: de lichtsterkte is evenredig met dezelfde cosinus als in de formule, waardoor die wegvalt. Zo'n lichtbron heeft dus in elke richting dezelfde luminantie. De luminantie van een zwarte straler hangt alleen van de temperatuur af, niet van de grootte of de afstand. </p> <table class="wikitable"> <tbody><tr> <th>Situatie</th> <th>Luminantiebereik<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><br />(cd/m<sup>2</sup>) </th></tr> <tr> <td><a href="/wiki/Fotopisch_zicht" title="Fotopisch zicht">scotopisch zicht</a> (nacht)</td> <td>3 · 10<sup>−6</sup> tot 3...30 · 10<sup>−3</sup> </td></tr> <tr> <td><a href="/wiki/Fotopisch_zicht" title="Fotopisch zicht">mesopisch zicht</a></td> <td>3…30 · 10<sup>−3</sup> tot 3...30 · 10<sup>−6</sup> </td></tr> <tr> <td><a href="/wiki/Fotopisch_zicht" title="Fotopisch zicht">fotopisch zicht</a> (dag)</td> <td>meer dan 3...30 </td></tr> <tr> <td><a href="/wiki/Kegeltje" title="Kegeltje">kegeltjesverzadiging</a><br />(verblinding)</td> <td>10<sup>5</sup>...10<sup>6</sup> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Wegwijzer_lichtgrootheden_en_-eenheden">Wegwijzer lichtgrootheden en -eenheden</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Luminantie&veaction=edit&section=2" title="Bewerk dit kopje: Wegwijzer lichtgrootheden en -eenheden" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Luminantie&action=edit&section=2" title="De broncode bewerken van de sectie: Wegwijzer lichtgrootheden en -eenheden"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable"> <tbody><tr valign="top"> <th>naam en symbool</th> <th>definitie</th> <th>eenheid</th> <th>omrekening </th></tr> <tr> <td><a href="/wiki/Lichtsterkte_(fotometrie)" title="Lichtsterkte (fotometrie)">Lichtsterkte</a> <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 I_{\mathrm {v} }}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>I</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">v</mi> </mrow> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle I_{\mathrm {v} }}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/c188f81c3c73515dabdad1c86d95c9be145745bb" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.123ex; height:2.509ex;" alt="{\displaystyle I_{\mathrm {v} }}"></span></td> <td><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 I={\frac {\partial \Phi }{\partial \Omega }}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>I</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi mathvariant="normal">∂</mi> <mi mathvariant="normal">Φ</mi> </mrow> <mrow> <mi mathvariant="normal">∂</mi> <mi mathvariant="normal">Ω</mi> </mrow> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle I={\frac {\partial \Phi }{\partial \Omega }}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/ccf15d7ae7410544a116e33abe97ae4f4b257099" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:8.102ex; height:5.509ex;" alt="{\displaystyle I={\frac {\partial \Phi }{\partial \Omega }}}"></span></td> <td><a href="/wiki/Candela_(eenheid)" title="Candela (eenheid)">candela</a> <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 \mathrm {cd} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">c</mi> <mi mathvariant="normal">d</mi> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathrm {cd} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7e0cdc236a1fc089e1ca591a4b4363684775bea3" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.325ex; height:2.176ex;" alt="{\displaystyle \mathrm {cd} }"></span></td> <td><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 \mathrm {1\ cd=1\ {\frac {lm}{sr}}} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> <mtext> </mtext> <mi mathvariant="normal">c</mi> <mi mathvariant="normal">d</mi> <mo>=</mo> <mn>1</mn> <mtext> </mtext> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi mathvariant="normal">l</mi> <mi mathvariant="normal">m</mi> </mrow> <mrow> <mi mathvariant="normal">s</mi> <mi mathvariant="normal">r</mi> </mrow> </mfrac> </mrow> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathrm {1\ cd=1\ {\frac {lm}{sr}}} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/d317d768bf70ed09c42f8526c09587f0181075fa" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:12.328ex; height:5.343ex;" alt="{\displaystyle \mathrm {1\ cd=1\ {\frac {lm}{sr}}} }"></span> </td></tr> <tr> <td><a href="/wiki/Lichtstroom" title="Lichtstroom">Lichtstroom</a> <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 \Phi _{\mathrm {v} }}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi mathvariant="normal">Φ</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">v</mi> </mrow> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \Phi _{\mathrm {v} }}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/a5269471e2785865d63663c903334bfc673f4c6b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.778ex; height:2.509ex;" alt="{\displaystyle \Phi _{\mathrm {v} }}"></span></td> <td><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 \Phi _{\mathrm {v} }=K_{\mathrm {m} }\int _{380\ \mathrm {nm} }^{780\ \mathrm {nm} }{\frac {\partial \Phi _{\mathrm {e} }(\lambda )}{\partial \lambda }}\cdot V(\lambda )\ \mathrm {d} \lambda }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi mathvariant="normal">Φ</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">v</mi> </mrow> </mrow> </msub> <mo>=</mo> <msub> <mi>K</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">m</mi> </mrow> </mrow> </msub> <msubsup> <mo>∫</mo> <mrow class="MJX-TeXAtom-ORD"> <mn>380</mn> <mtext> </mtext> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">n</mi> <mi mathvariant="normal">m</mi> </mrow> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>780</mn> <mtext> </mtext> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">n</mi> <mi mathvariant="normal">m</mi> </mrow> </mrow> </msubsup> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi mathvariant="normal">∂</mi> <msub> <mi mathvariant="normal">Φ</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">e</mi> </mrow> </mrow> </msub> <mo stretchy="false">(</mo> <mi>λ</mi> <mo stretchy="false">)</mo> </mrow> <mrow> <mi mathvariant="normal">∂</mi> <mi>λ</mi> </mrow> </mfrac> </mrow> <mo>⋅</mo> <mi>V</mi> <mo stretchy="false">(</mo> <mi>λ</mi> <mo stretchy="false">)</mo> <mtext> </mtext> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">d</mi> </mrow> <mi>λ</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \Phi _{\mathrm {v} }=K_{\mathrm {m} }\int _{380\ \mathrm {nm} }^{780\ \mathrm {nm} }{\frac {\partial \Phi _{\mathrm {e} }(\lambda )}{\partial \lambda }}\cdot V(\lambda )\ \mathrm {d} \lambda }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/358759abe07b87eb6ff65888e98b34c2c0b0f487" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:36.069ex; height:6.176ex;" alt="{\displaystyle \Phi _{\mathrm {v} }=K_{\mathrm {m} }\int _{380\ \mathrm {nm} }^{780\ \mathrm {nm} }{\frac {\partial \Phi _{\mathrm {e} }(\lambda )}{\partial \lambda }}\cdot V(\lambda )\ \mathrm {d} \lambda }"></span></td> <td><a href="/wiki/Lumen_(eenheid)" title="Lumen (eenheid)">lumen</a> <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 \mathrm {lm} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">l</mi> <mi mathvariant="normal">m</mi> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathrm {lm} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/66cc6ee0feec3d5aaaee8efc236fac601f33c8ed" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.583ex; height:2.176ex;" alt="{\displaystyle \mathrm {lm} }"></span></td> <td><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 \mathrm {1\ lm=1\ sr\cdot cd} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> <mtext> </mtext> <mi mathvariant="normal">l</mi> <mi mathvariant="normal">m</mi> <mo>=</mo> <mn>1</mn> <mtext> </mtext> <mi mathvariant="normal">s</mi> <mi mathvariant="normal">r</mi> <mo>⋅</mo> <mi mathvariant="normal">c</mi> <mi mathvariant="normal">d</mi> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathrm {1\ lm=1\ sr\cdot cd} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/a0732ff4f1c450043ef93d93f51c687bd9586a3b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:14.999ex; height:2.176ex;" alt="{\displaystyle \mathrm {1\ lm=1\ sr\cdot cd} }"></span> </td></tr> <tr> <td><a href="/wiki/Specifieke_lichtstroom" title="Specifieke lichtstroom">Specifieke lichtstroom</a> <br /> of lichtrendement <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 \eta }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>η</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \eta }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/e4d701857cf5fbec133eebaf94deadf722537f64" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:1.169ex; height:2.176ex;" alt="{\displaystyle \eta }"></span> of <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 \Phi _{\mathrm {s} }}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi mathvariant="normal">Φ</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">s</mi> </mrow> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \Phi _{\mathrm {s} }}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/f19679851ac5ccd912204b6372546cb0ffdbab74" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.558ex; height:2.509ex;" alt="{\displaystyle \Phi _{\mathrm {s} }}"></span></td> <td><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 \eta ={\frac {\Phi }{P}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>η</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mi mathvariant="normal">Φ</mi> <mi>P</mi> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \eta ={\frac {\Phi }{P}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/e7d3b26cc3c47ef52fff846e6b11c97361130e07" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:6.849ex; height:5.176ex;" alt="{\displaystyle \eta ={\frac {\Phi }{P}}}"></span></td> <td><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 \mathrm {lm/W} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">l</mi> <mi mathvariant="normal">m</mi> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mi mathvariant="normal">W</mi> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathrm {lm/W} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/20b9101cde6fca4016bd1a2116ff68355d0d0541" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:6.134ex; height:2.843ex;" alt="{\displaystyle \mathrm {lm/W} }"></span></td> <td> </td></tr> <tr> <td><a href="/wiki/Verlichtingssterkte" title="Verlichtingssterkte">Verlichtingssterkte</a>: <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 E}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>E</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle E}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/4232c9de2ee3eec0a9c0a19b15ab92daa6223f9b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.776ex; height:2.176ex;" alt="{\displaystyle E}"></span></td> <td><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 E={\frac {\partial \Phi }{\partial A}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>E</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi mathvariant="normal">∂</mi> <mi mathvariant="normal">Φ</mi> </mrow> <mrow> <mi mathvariant="normal">∂</mi> <mi>A</mi> </mrow> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle E={\frac {\partial \Phi }{\partial A}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/052c87fca407a58e3ada1a5db2eb1578360db431" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:8.771ex; height:5.509ex;" alt="{\displaystyle E={\frac {\partial \Phi }{\partial A}}}"></span></td> <td><a href="/wiki/Lux_(eenheid)" title="Lux (eenheid)">lux</a> <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 \mathrm {lx} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">l</mi> <mi mathvariant="normal">x</mi> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathrm {lx} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0d0c2e958b91dd8554797b2102e3bf14163583c7" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.874ex; height:2.176ex;" alt="{\displaystyle \mathrm {lx} }"></span></td> <td><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 \mathrm {1\ lx=1\ {\frac {lm}{m^{2}}}=1\ {\frac {sr\cdot cd}{m^{2}}}} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> <mtext> </mtext> <mi mathvariant="normal">l</mi> <mi mathvariant="normal">x</mi> <mo>=</mo> <mn>1</mn> <mtext> </mtext> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi mathvariant="normal">l</mi> <mi mathvariant="normal">m</mi> </mrow> <msup> <mi mathvariant="normal">m</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mfrac> </mrow> <mo>=</mo> <mn>1</mn> <mtext> </mtext> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi mathvariant="normal">s</mi> <mi mathvariant="normal">r</mi> <mo>⋅</mo> <mi mathvariant="normal">c</mi> <mi mathvariant="normal">d</mi> </mrow> <msup> <mi mathvariant="normal">m</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mfrac> </mrow> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathrm {1\ lx=1\ {\frac {lm}{m^{2}}}=1\ {\frac {sr\cdot cd}{m^{2}}}} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/3c2703bc314686854c37fac09d51f380baea8c9b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:23.795ex; height:5.509ex;" alt="{\displaystyle \mathrm {1\ lx=1\ {\frac {lm}{m^{2}}}=1\ {\frac {sr\cdot cd}{m^{2}}}} }"></span> </td></tr> <tr> <td><a class="mw-selflink selflink">Luminantie</a> <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 L}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>L</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle L}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/103168b86f781fe6e9a4a87b8ea1cebe0ad4ede8" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.583ex; height:2.176ex;" alt="{\displaystyle L}"></span></td> <td><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 L={\frac {\partial ^{2}\Phi }{\partial \Omega \cdot \partial A_{1}\cdot \cos \varepsilon _{1}}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>L</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <msup> <mi mathvariant="normal">∂</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mi mathvariant="normal">Φ</mi> </mrow> <mrow> <mi mathvariant="normal">∂</mi> <mi mathvariant="normal">Ω</mi> <mo>⋅</mo> <mi mathvariant="normal">∂</mi> <msub> <mi>A</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msub> <mo>⋅</mo> <mi>cos</mi> <mo>⁡</mo> <msub> <mi>ε</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msub> </mrow> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle L={\frac {\partial ^{2}\Phi }{\partial \Omega \cdot \partial A_{1}\cdot \cos \varepsilon _{1}}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/48ffb1a77dcfe652bfb7c83ef08737247fad3ad5" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:21.623ex; height:6.176ex;" alt="{\displaystyle L={\frac {\partial ^{2}\Phi }{\partial \Omega \cdot \partial A_{1}\cdot \cos \varepsilon _{1}}}}"></span></td> <td><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 \mathrm {\frac {cd}{m^{2}}} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi mathvariant="normal">c</mi> <mi mathvariant="normal">d</mi> </mrow> <msup> <mi mathvariant="normal">m</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathrm {\frac {cd}{m^{2}}} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/712952a69e467f58cd576f8f020944fda62fbf1e" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:3.826ex; height:5.509ex;" alt="{\displaystyle \mathrm {\frac {cd}{m^{2}}} }"></span></td> <td><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 \mathrm {1\ {\frac {cd}{m^{2}}}} =\mathrm {1\ {\frac {lm}{sr\cdot m^{2}}}} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> <mtext> </mtext> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi mathvariant="normal">c</mi> <mi mathvariant="normal">d</mi> </mrow> <msup> <mi mathvariant="normal">m</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mfrac> </mrow> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> <mtext> </mtext> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi mathvariant="normal">l</mi> <mi mathvariant="normal">m</mi> </mrow> <mrow> <mi mathvariant="normal">s</mi> <mi mathvariant="normal">r</mi> <mo>⋅</mo> <msup> <mi mathvariant="normal">m</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mrow> </mfrac> </mrow> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathrm {1\ {\frac {cd}{m^{2}}}} =\mathrm {1\ {\frac {lm}{sr\cdot m^{2}}}} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/42a17f2ef58b583164a0b5edf5e171e4b6b7471a" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.171ex; width:17.744ex; height:5.676ex;" alt="{\displaystyle \mathrm {1\ {\frac {cd}{m^{2}}}} =\mathrm {1\ {\frac {lm}{sr\cdot m^{2}}}} }"></span> </td></tr> <tr> <td><a href="/wiki/Lichtenergie" title="Lichtenergie">Lichtenergie</a> <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 Q_{\mathrm {v} }}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>Q</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">v</mi> </mrow> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle Q_{\mathrm {v} }}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/af617714b1e1dbdbc880b4c2c32b9833c52bf25e" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.939ex; height:2.509ex;" alt="{\displaystyle Q_{\mathrm {v} }}"></span></td> <td><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 Q_{\mathrm {v} }=\int _{0}^{T}\Phi _{\mathrm {v} }(t)\mathrm {d} t}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>Q</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">v</mi> </mrow> </mrow> </msub> <mo>=</mo> <msubsup> <mo>∫</mo> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mi>T</mi> </mrow> </msubsup> <msub> <mi mathvariant="normal">Φ</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">v</mi> </mrow> </mrow> </msub> <mo stretchy="false">(</mo> <mi>t</mi> <mo stretchy="false">)</mo> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">d</mi> </mrow> <mi>t</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle Q_{\mathrm {v} }=\int _{0}^{T}\Phi _{\mathrm {v} }(t)\mathrm {d} t}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/e2e67d6ac24ad1c5fd89704323c59c879beb3d70" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:17.837ex; height:6.176ex;" alt="{\displaystyle Q_{\mathrm {v} }=\int _{0}^{T}\Phi _{\mathrm {v} }(t)\mathrm {d} t}"></span></td> <td>lumenseconde <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 \mathrm {lm\cdot s} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">l</mi> <mi mathvariant="normal">m</mi> <mo>⋅</mo> <mi mathvariant="normal">s</mi> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathrm {lm\cdot s} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/409e55f5c7df19db4b85f1c1dbee488c14f786b1" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:5.178ex; height:2.176ex;" alt="{\displaystyle \mathrm {lm\cdot s} }"></span></td> <td> </td></tr> <tr> <td><a href="/wiki/Ruimtehoek" title="Ruimtehoek">Ruimtehoek</a> <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 \Omega }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi mathvariant="normal">Ω</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \Omega }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/24b0d5ca6f381068d756f6337c08e0af9d1eeb6f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.678ex; height:2.176ex;" alt="{\displaystyle \Omega }"></span></td> <td><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 \Omega ={\frac {A}{r^{2}}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi mathvariant="normal">Ω</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mi>A</mi> <msup> <mi>r</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \Omega ={\frac {A}{r^{2}}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/34ca871428ff3427913d1c9dd488e02a78cb05f0" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.171ex; width:7.716ex; height:5.676ex;" alt="{\displaystyle \Omega ={\frac {A}{r^{2}}}}"></span></td> <td><a href="/wiki/Steradiaal" title="Steradiaal">steradiaal</a> <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 \mathrm {sr} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">s</mi> <mi mathvariant="normal">r</mi> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathrm {sr} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/32f7e91052818338ddbe39bd0f9413c6bb9474f1" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.828ex; height:1.676ex;" alt="{\displaystyle \mathrm {sr} }"></span></td> <td><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 \mathrm {1\ sr=1\ {\frac {m^{2}}{m^{2}}}={\frac {\left[oppervlak\right]}{\left[straal\right]^{2}}}} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> <mtext> </mtext> <mi mathvariant="normal">s</mi> <mi mathvariant="normal">r</mi> <mo>=</mo> <mn>1</mn> <mtext> </mtext> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <msup> <mi mathvariant="normal">m</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <msup> <mi mathvariant="normal">m</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mfrac> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mo>[</mo> <mrow> <mi mathvariant="normal">o</mi> <mi mathvariant="normal">p</mi> <mi mathvariant="normal">p</mi> <mi mathvariant="normal">e</mi> <mi mathvariant="normal">r</mi> <mi mathvariant="normal">v</mi> <mi mathvariant="normal">l</mi> <mi mathvariant="normal">a</mi> <mi mathvariant="normal">k</mi> </mrow> <mo>]</mo> </mrow> <msup> <mrow> <mo>[</mo> <mrow> <mi mathvariant="normal">s</mi> <mi mathvariant="normal">t</mi> <mi mathvariant="normal">r</mi> <mi mathvariant="normal">a</mi> <mi mathvariant="normal">a</mi> <mi mathvariant="normal">l</mi> </mrow> <mo>]</mo> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mfrac> </mrow> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathrm {1\ sr=1\ {\frac {m^{2}}{m^{2}}}={\frac {\left[oppervlak\right]}{\left[straal\right]^{2}}}} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0aa058b716c030328905262056c032bf085ac3ae" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -3.171ex; width:27.423ex; height:7.009ex;" alt="{\displaystyle \mathrm {1\ sr=1\ {\frac {m^{2}}{m^{2}}}={\frac {\left[oppervlak\right]}{\left[straal\right]^{2}}}} }"></span> </td></tr></tbody></table> <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=Luminantie&veaction=edit&section=3" 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=Luminantie&action=edit&section=3" 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/Lichtgrootheden_en_-eenheden" title="Lichtgrootheden en -eenheden">Lichtgrootheden en -eenheden</a></li> <li><a href="/wiki/Lichtsterkte_(fotometrie)" title="Lichtsterkte (fotometrie)">Lichtsterkte (fotometrie)</a></li> <li><a href="/wiki/Lichtstroom" title="Lichtstroom">Lichtstroom</a></li> <li><a href="/wiki/Specifieke_lichtstroom" title="Specifieke lichtstroom">Specifieke lichtstroom</a></li> <li><a href="/wiki/Verlichtingssterkte" title="Verlichtingssterkte">Verlichtingssterkte</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Literatuur">Literatuur</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Luminantie&veaction=edit&section=4" title="Bewerk dit kopje: Literatuur" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Luminantie&action=edit&section=4" title="De broncode bewerken van de sectie: Literatuur"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Ubert, C.G.A.A.: <i>Cursus verlichtingstechniek</i>; PBNA</li> <li>Hans R. Ris: <i>Beleuchtungstechnik für Praktiker</i>. 2. Auflage, VDE-Verlag GmbH, Berlin-Offenbach 1997, <span class="ISBN"><a href="/wiki/Speciaal:Boekbronnen/3-8007-2163-5" title="Speciaal:Boekbronnen/3-8007-2163-5">ISBN 3-8007-2163-5</a></span>.</li> <li>Günter Springer: <i>Fachkunde Elektrotechnik</i>. 18. Auflage, Verlag Europa-Lehrmittel, Wuppertal 1989, <span class="ISBN"><a href="/wiki/Speciaal:Boekbronnen/3-8085-3018-9" title="Speciaal:Boekbronnen/3-8085-3018-9">ISBN 3-8085-3018-9</a></span>.</li> <li>Wilhelm Gerster: <i>Moderne Beleuchtungssysteme für drinnen und draussen</i>. Compact Verlag, München 1997, <span class="ISBN"><a href="/wiki/Speciaal:Boekbronnen/3-8174-2395-0" title="Speciaal:Boekbronnen/3-8174-2395-0">ISBN 3-8174-2395-0</a></span>.</li> <li>Horst Stöcker: <i>Taschenbuch der Physik</i>. 4. Auflage, Verlag Harry Deutsch, Frankfurt am Main 2000, <span class="ISBN"><a href="/wiki/Speciaal:Boekbronnen/3-8171-1628-4" title="Speciaal:Boekbronnen/3-8171-1628-4">ISBN 3-8171-1628-4</a></span>.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Externe_links">Externe links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Luminantie&veaction=edit&section=5" title="Bewerk dit kopje: Externe links" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Luminantie&action=edit&section=5" title="De broncode bewerken van de sectie: Externe links"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20090516065503/http://www.stromsparlampen.eu/fotometrie_applet.html">Fotometrie-applet – Goede demonstratie van fotometrische grootheden</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Noten_en_referenties">Noten en referenties</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Luminantie&veaction=edit&section=6" title="Bewerk dit kopje: Noten en referenties" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Luminantie&action=edit&section=6" title="De broncode bewerken van de sectie: Noten en referenties"><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">Deze waarden variëren van persoon tot persoon en hangen bovendien af van de golflengte van het licht.</span> </li> </ol></div></div> <style data-mw-deduplicate="TemplateStyles:r67837862">.mw-parser-output .navigatie{position:relative;clear:both;overflow:auto;margin:1em auto -0.5em;padding:2px;background-color:var(--background-color-neutral-subtle,#f8f9fa);border:1px solid var(--border-color-base,#a2a9b1);text-align:center;font-size:87%}.mw-parser-output .navigatie-bewerken{margin-left:0.5em}.mw-parser-output .navigatie-bewerken .mw-ui-icon::before{background-size:0.9em}.mw-parser-output .navigatie-afb-links,.mw-parser-output .navigatie-afb-rechts{position:absolute}.mw-parser-output .navigatie-afb-rechts{right:2px}.mw-parser-output .navigatie-afb-groot{float:right;padding-left:0.5em}.mw-parser-output .navigatie-titel{background-color:#ddeef8;padding:2px 5.5em;font-weight:bold}.mw-parser-output .navigatie-inhoud{padding:0.5em}.mw-parser-output .navigatie-inhoud p:first-child{margin:0}.mw-parser-output .navigatie div[style*="background-color"],.mw-parser-output .navigatie div[style*="background"]{color:inherit}@media 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srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c4/OOjs_UI_icon_article-ltr.svg/24px-OOjs_UI_icon_article-ltr.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c4/OOjs_UI_icon_article-ltr.svg/32px-OOjs_UI_icon_article-ltr.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span> · <span class="ui-state-disabled" typeof="mw:File"><span title="Overleg sjabloon (de pagina bestaat niet)"><img alt="Overleg sjabloon (de pagina bestaat niet)" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/40/OOjs_UI_icon_speechBubbles-ltr.svg/16px-OOjs_UI_icon_speechBubbles-ltr.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/40/OOjs_UI_icon_speechBubbles-ltr.svg/24px-OOjs_UI_icon_speechBubbles-ltr.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/40/OOjs_UI_icon_speechBubbles-ltr.svg/32px-OOjs_UI_icon_speechBubbles-ltr.svg.png 2x" data-file-width="20" data-file-height="20" /></span></span> · <span typeof="mw:File"><a href="//nl.wikipedia.org/w/index.php?title=Sjabloon:Navigatie_fysische_optica&action=edit" title="Sjabloon bewerken"><img alt="Sjabloon bewerken" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr.svg/16px-OOjs_UI_icon_edit-ltr.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr.svg/24px-OOjs_UI_icon_edit-ltr.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr.svg/32px-OOjs_UI_icon_edit-ltr.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></div></div> <div id="Fysische_optica" class="navigatie-titel">Fysische optica</div> <div class="navigatie-inhoud mw-collapsible-content"> <p><a href="/wiki/Airy-schijf" title="Airy-schijf">airy-schijf</a> · <a href="/wiki/Amplitude" title="Amplitude">amplitude</a> · <a href="/wiki/Brekingsindex" title="Brekingsindex">brekingsindex</a> · <a href="/wiki/Brewsterhoek" title="Brewsterhoek">brewsterhoek</a> · <a href="/wiki/Dopplereffect" title="Dopplereffect">dopplereffect</a> · <a href="/wiki/Fase_(golf)" title="Fase (golf)">fase</a> · <a href="/wiki/Foto-elektrisch_effect" title="Foto-elektrisch effect">foto-elektrisch effect</a> · <a href="/wiki/Frequentie" title="Frequentie">frequentie</a> · <a href="/wiki/Fresnelvergelijkingen" title="Fresnelvergelijkingen">fresnelvergelijkingen</a> · <a href="/wiki/Fresnel-zoneplaat" title="Fresnel-zoneplaat">fresnel-zoneplaat</a> · <a href="/wiki/Getal_van_Abbe" title="Getal van Abbe">getal van Abbe</a> · <a href="/wiki/Golffront" title="Golffront">golffront</a> · <a href="/wiki/Golflengte" title="Golflengte">golflengte</a> · <a href="/wiki/Holografie" title="Holografie">holografie</a> · <a href="/wiki/Intensiteit_(natuurkunde)" title="Intensiteit (natuurkunde)">intensiteit</a> · <a href="/wiki/Interferometer" title="Interferometer">interferometer</a> · <a href="/wiki/Laser_(licht)" title="Laser (licht)">laser</a> · <a href="/wiki/Lasersnijden" title="Lasersnijden">lasersnijden</a> · <a href="/wiki/Lichtenergie" title="Lichtenergie">lichtenergie</a> · <a href="/wiki/Lichtgrootheden_en_-eenheden" title="Lichtgrootheden en -eenheden">lichtgrootheden en <span class="nowrap">-eenheden</span></a> · <a href="/wiki/Lichtmeter" title="Lichtmeter">lichtmeter</a> · <a href="/wiki/Lichtsnelheid" title="Lichtsnelheid">lichtsnelheid</a> · <a href="/wiki/Lichtsterkte_(fotometrie)" title="Lichtsterkte (fotometrie)">lichtsterkte</a> · <a href="/wiki/Lichtstroom" title="Lichtstroom">lichtstroom</a> · <a href="/wiki/Mach-Zehnder-interferometer" title="Mach-Zehnder-interferometer">Mach-Zehnder-interferometer</a> · <a href="/wiki/Michelson-interferometer" title="Michelson-interferometer">Michelson-interferometer</a> · <a href="/wiki/Ooggevoeligheid" title="Ooggevoeligheid">ooggevoeligheid</a> · <a href="/wiki/Optische_vezel" title="Optische vezel">optische vezel</a> · <a href="/wiki/Polarimeter" title="Polarimeter">polarimeter</a> · <a href="/wiki/Polarisatie_(elektromagnetisme)" title="Polarisatie (elektromagnetisme)">polarisatie</a> · <a href="/wiki/Poynting-vector" title="Poynting-vector">poynting-vector</a> · <span class="nowrap"><a href="/wiki/Principe_van_Huygens-Fresnel" title="Principe van Huygens-Fresnel">principe van Huygens-Fresnel</a></span> · <span class="nowrap"><a href="/wiki/Principe_van_Fermat" title="Principe van Fermat">principe van Fermat</a></span> · <a href="/wiki/Prisma_(optica)" title="Prisma (optica)">prisma</a> · <a href="/wiki/Schlierenoptica" title="Schlierenoptica">schlierenoptica</a> · <a href="/wiki/Specifieke_lichtstroom" title="Specifieke lichtstroom">specifieke lichtstroom</a> · <a href="/wiki/Stralingsdeler" title="Stralingsdeler">stralingsdeler</a> · <a href="/wiki/Tralie_(natuurkunde)" title="Tralie (natuurkunde)">tralie</a> · <a href="/wiki/Transversale_golf" title="Transversale golf">transversale golf</a> · <a href="/wiki/Verlichtingssterkte" title="Verlichtingssterkte">verlichtingssterkte</a> · <a href="/wiki/Wet_van_Bragg" title="Wet van Bragg">wet van Bragg</a> </p> <hr /> <p><a href="/wiki/Infrarood" title="Infrarood">infrarood</a> · <a href="/wiki/Kleur_(hoofdbetekenis)" class="mw-redirect" title="Kleur (hoofdbetekenis)">kleur</a> · <a href="/wiki/Licht" title="Licht">licht</a> · <a href="/wiki/Monochroom" title="Monochroom">monochromatisch licht</a> · <a href="/wiki/Spectrum_(hoofdbetekenis)" class="mw-redirect" title="Spectrum (hoofdbetekenis)">spectrum</a> · <a href="/wiki/Ultraviolet" title="Ultraviolet">ultraviolet</a> · <a href="/wiki/Wit_licht_(natuurkunde)" title="Wit licht (natuurkunde)">wit licht</a> </p> <hr /> <p><a href="/wiki/Absorptie_(natuurkunde)" title="Absorptie (natuurkunde)">absorptie</a> · <a href="/wiki/Coherentie_(natuurkunde)" title="Coherentie (natuurkunde)">coherentie</a> · <a href="/wiki/Diffractie" title="Diffractie">diffractie</a> · <a href="/wiki/Dispersie_(natuurkunde)" title="Dispersie (natuurkunde)">dispersie</a> · <a href="/wiki/Interferentie_(natuurkunde)" title="Interferentie (natuurkunde)">interferentie</a> · <a href="/wiki/Lichtbreking" title="Lichtbreking">lichtbreking</a> · <a href="/wiki/Reflectie_(straling)" title="Reflectie (straling)">reflectie</a> · <a href="/wiki/Totale_interne_reflectie" title="Totale interne reflectie">totale interne reflectie</a> · <a href="/wiki/Transmissie_(straling)" title="Transmissie (straling)">transmissie</a> </p> <hr /> <p><a href="/wiki/Emissie_(natuurkunde)" title="Emissie (natuurkunde)">emissie</a> · <a href="/wiki/Gestimuleerde_emissie" title="Gestimuleerde emissie">gestimuleerde emissie</a> · <a href="/wiki/Fluorescentie" title="Fluorescentie">fluorescentie</a> · <a href="/wiki/Fosforescentie" title="Fosforescentie">fosforescentie</a> · <a class="mw-selflink selflink">luminantie</a> · <a href="/wiki/Luminescentie" title="Luminescentie">luminescentie</a> </p> <hr /> <p><a href="/wiki/Fluorescentiespectroscopie" title="Fluorescentiespectroscopie">fluorescentiespectroscopie</a> · <a href="/wiki/Spectraalanalyse" title="Spectraalanalyse">spectraalanalyse</a> · <a href="/wiki/Spectraallijn" title="Spectraallijn">spectraallijn</a> · <a href="/wiki/Spectroscopie" title="Spectroscopie">Spectroscopie</a> · <a href="/wiki/UV/VIS-spectroscopie" title="UV/VIS-spectroscopie">UV/VIS-spectroscopie</a> </p> <hr /> <p><a href="/wiki/Halo_(lichteffect)" title="Halo (lichteffect)">halo</a> · <a href="/wiki/Newtonring" title="Newtonring">newtonring</a> </p> <hr /> <p><a href="/wiki/David_Brewster" title="David Brewster">David Brewster</a> · <a href="/wiki/Christian_Doppler" title="Christian Doppler">Christian Doppler</a> · <a href="/wiki/Charles_Fabry" title="Charles Fabry">Charles Fabry</a> · <a href="/wiki/Pierre_de_Fermat" title="Pierre de Fermat">Pierre de Fermat</a> · <a href="/wiki/Joseph_von_Fraunhofer" title="Joseph von Fraunhofer">Joseph von Fraunhofer</a> · <a href="/wiki/Dennis_Gabor" title="Dennis Gabor">Dennis Gabor</a> · <a href="/wiki/Augustin_Fresnel" title="Augustin Fresnel">Augustin Fresnel</a> · <a href="/wiki/Heinrich_Hertz" title="Heinrich Hertz">Heinrich Hertz</a> · <a href="/wiki/Christiaan_Huygens" title="Christiaan Huygens">Christiaan Huygens</a> · <a href="/wiki/Hendrik_Lorentz" title="Hendrik Lorentz">Hendrik Lorentz</a> · <a href="/wiki/Albert_Michelson" title="Albert Michelson">Albert Michelson</a> · <a href="/wiki/James_Clerk_Maxwell" title="James Clerk Maxwell">James Clerk Maxwell</a> · <a href="/wiki/Edward_Morley" title="Edward Morley">Edward Morley</a> · <a href="/wiki/Isaac_Newton" title="Isaac Newton">Isaac Newton</a> · <a href="/wiki/Alfred_P%C3%A9rot" title="Alfred Pérot">Alfred Pérot</a> · <a href="/wiki/Thomas_Young_(wetenschapper)" title="Thomas Young (wetenschapper)">Thomas Young</a> </p> </div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Overgenomen van "<a dir="ltr" href="https://nl.wikipedia.org/w/index.php?title=Luminantie&oldid=61272570">https://nl.wikipedia.org/w/index.php?title=Luminantie&oldid=61272570</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Categorie:Alles" title="Categorie:Alles">Categorieën</a>: <ul><li><a href="/wiki/Categorie:Grootheid" title="Categorie:Grootheid">Grootheid</a></li><li><a href="/wiki/Categorie:Fysische_optica" title="Categorie:Fysische optica">Fysische optica</a></li><li><a href="/wiki/Categorie:Licht" title="Categorie:Licht">Licht</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" 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