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</a> <ul id="toc-Descrizione-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Note" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Note"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Note</span> </div> </a> <ul id="toc-Note-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Voci_correlate" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Voci_correlate"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Voci correlate</span> </div> </a> <ul id="toc-Voci_correlate-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Indice" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Mostra/Nascondi l'indice" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Mostra/Nascondi l'indice</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Luminosità solare</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Vai a una voce in un'altra lingua. Disponibile in 43 lingue" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-43" 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">43 lingue</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Sonligsterkte" title="Sonligsterkte - afrikaans" lang="af" hreflang="af" data-title="Sonligsterkte" 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%A5%D8%B6%D8%A7%D8%A1%D8%A9_%D8%B4%D9%85%D8%B3%D9%8A%D8%A9" title="إضاءة شمسية - arabo" lang="ar" hreflang="ar" data-title="إضاءة شمسية" data-language-autonym="العربية" data-language-local-name="arabo" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%A1%D0%BE%D0%BD%D0%B5%D1%87%D0%BD%D0%B0%D1%8F_%D1%81%D1%8C%D0%B2%D1%8F%D1%86%D1%96%D0%BB%D1%8C%D0%BD%D0%B0%D1%81%D1%8C%D1%86%D1%8C" title="Сонечная сьвяцільнасьць - Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Сонечная сьвяцільнасьць" 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%BB%D1%8A%D0%BD%D1%87%D0%B5%D0%B2%D0%B0_%D1%81%D0%B2%D0%B5%D1%82%D0%B8%D0%BC%D0%BE%D1%81%D1%82" title="Слънчева светимост - bulgaro" lang="bg" hreflang="bg" data-title="Слънчева светимост" data-language-autonym="Български" data-language-local-name="bulgaro" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%B8%E0%A7%8C%E0%A6%B0_%E0%A6%9C%E0%A7%8D%E0%A6%AF%E0%A7%8B%E0%A6%A4%E0%A6%BF" title="সৌর জ্যোতি - bengalese" lang="bn" hreflang="bn" data-title="সৌর জ্যোতি" data-language-autonym="বাংলা" data-language-local-name="bengalese" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Lluminositat_solar" title="Lluminositat solar - catalano" lang="ca" hreflang="ca" data-title="Lluminositat solar" data-language-autonym="Català" data-language-local-name="catalano" 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/Slune%C4%8Dn%C3%AD_z%C3%A1%C5%99ivost" title="Sluneční zářivost - ceco" lang="cs" hreflang="cs" data-title="Sluneční zářivost" data-language-autonym="Čeština" data-language-local-name="ceco" 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%A5%C4%95%D0%B2%D0%B5%D0%BB_%C3%A7%D1%83%D1%82%D0%B0%D1%82%D0%B0%D1%81%D0%BB%C4%83%D1%85%C4%95" title="Хĕвел çутатаслăхĕ - ciuvascio" lang="cv" hreflang="cv" data-title="Хĕвел çутатаслăхĕ" data-language-autonym="Чӑвашла" data-language-local-name="ciuvascio" 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/Sonnenleuchtkraft" title="Sonnenleuchtkraft - tedesco" lang="de" hreflang="de" data-title="Sonnenleuchtkraft" data-language-autonym="Deutsch" data-language-local-name="tedesco" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Solar_luminosity" title="Solar luminosity - inglese" lang="en" hreflang="en" data-title="Solar luminosity" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Suna_lumeco" title="Suna lumeco - esperanto" lang="eo" hreflang="eo" data-title="Suna lumeco" 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/Luminosidad_solar" title="Luminosidad solar - spagnolo" lang="es" hreflang="es" data-title="Luminosidad solar" data-language-autonym="Español" data-language-local-name="spagnolo" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Eguzki-argitasun" title="Eguzki-argitasun - basco" lang="eu" hreflang="eu" data-title="Eguzki-argitasun" data-language-autonym="Euskara" data-language-local-name="basco" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%AA%D8%A7%D8%A8%D9%86%D8%AF%DA%AF%DB%8C_%D8%AE%D9%88%D8%B1%D8%B4%DB%8C%D8%AF" title="تابندگی خورشید - persiano" lang="fa" hreflang="fa" data-title="تابندگی خورشید" data-language-autonym="فارسی" data-language-local-name="persiano" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Auringon_luminositeetti" title="Auringon luminositeetti - finlandese" lang="fi" hreflang="fi" data-title="Auringon luminositeetti" data-language-autonym="Suomi" data-language-local-name="finlandese" 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/Luminosit%C3%A9_solaire" title="Luminosité solaire - francese" lang="fr" hreflang="fr" data-title="Luminosité solaire" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B8%E0%A5%8C%E0%A4%B0_%E0%A4%9C%E0%A5%8D%E0%A4%AF%E0%A5%8B%E0%A4%A4%E0%A4%BF" title="सौर ज्योति - hindi" lang="hi" hreflang="hi" data-title="सौर ज्योति" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B1%D6%80%D6%87%D5%AB_%D5%BA%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="Արևի պայծառություն - armeno" lang="hy" hreflang="hy" data-title="Արևի պայծառություն" data-language-autonym="Հայերեն" data-language-local-name="armeno" 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/Luminositas_Matahari" title="Luminositas Matahari - indonesiano" lang="id" hreflang="id" data-title="Luminositas Matahari" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiano" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E5%A4%AA%E9%99%BD%E5%85%89%E5%BA%A6" title="太陽光度 - giapponese" lang="ja" hreflang="ja" data-title="太陽光度" data-language-autonym="日本語" data-language-local-name="giapponese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%9B%E1%83%96%E1%83%98%E1%83%A1_%E1%83%A1%E1%83%98%E1%83%99%E1%83%90%E1%83%A8%E1%83%99%E1%83%90%E1%83%A8%E1%83%94" title="მზის სიკაშკაშე - georgiano" lang="ka" hreflang="ka" data-title="მზის სიკაშკაშე" data-language-autonym="ქართული" data-language-local-name="georgiano" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%83%9C%EC%96%91_%EA%B4%91%EB%8F%84" title="태양 광도 - coreano" lang="ko" hreflang="ko" data-title="태양 광도" data-language-autonym="한국어" data-language-local-name="coreano" 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/Saul%C4%97s_%C5%A1viesis" title="Saulės šviesis - lituano" lang="lt" hreflang="lt" data-title="Saulės šviesis" data-language-autonym="Lietuvių" data-language-local-name="lituano" 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%A1%D0%BE%D0%BD%D1%87%D0%B5%D0%B2%D0%B0_%D1%81%D1%98%D0%B0%D1%98%D0%BD%D0%BE%D1%81%D1%82" title="Сончева сјајност - macedone" lang="mk" hreflang="mk" data-title="Сончева сјајност" data-language-autonym="Македонски" data-language-local-name="macedone" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%B8%E0%A5%8C%E0%A4%B0_%E0%A4%A4%E0%A5%87%E0%A4%9C%E0%A4%B8%E0%A5%8D%E0%A4%B5%E0%A4%BF%E0%A4%A4%E0%A4%BE" title="सौर तेजस्विता - marathi" lang="mr" hreflang="mr" data-title="सौर तेजस्विता" 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/Kekilauan_suria" title="Kekilauan suria - malese" lang="ms" hreflang="ms" data-title="Kekilauan suria" data-language-autonym="Bahasa Melayu" data-language-local-name="malese" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%94%E1%80%B1%E1%80%9B%E1%80%B1%E1%80%AC%E1%80%84%E1%80%BA%E1%80%81%E1%80%BC%E1%80%8A%E1%80%BA%E1%80%90%E1%80%B1%E1%80%AC%E1%80%80%E1%80%BA%E1%80%95%E1%80%99%E1%80%BE%E1%80%AF" title="နေရောင်ခြည်တောက်ပမှု - birmano" lang="my" hreflang="my" data-title="နေရောင်ခြည်တောက်ပမှု" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="birmano" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Solluminositet" title="Solluminositet - norvegese bokmål" lang="nb" hreflang="nb" data-title="Solluminositet" data-language-autonym="Norsk bokmål" data-language-local-name="norvegese bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Jasno%C5%9B%C4%87_S%C5%82o%C5%84ca" title="Jasność Słońca - polacco" lang="pl" hreflang="pl" data-title="Jasność Słońca" data-language-autonym="Polski" data-language-local-name="polacco" 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/Luminosidade_solar" title="Luminosidade solar - portoghese" lang="pt" hreflang="pt" data-title="Luminosidade solar" data-language-autonym="Português" data-language-local-name="portoghese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Luminozitate_solar%C4%83" title="Luminozitate solară - rumeno" lang="ro" hreflang="ro" data-title="Luminozitate solară" data-language-autonym="Română" data-language-local-name="rumeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A1%D0%BE%D0%BB%D0%BD%D0%B5%D1%87%D0%BD%D0%B0%D1%8F_%D1%81%D0%B2%D0%B5%D1%82%D0%B8%D0%BC%D0%BE%D1%81%D1%82%D1%8C" title="Солнечная светимость - russo" lang="ru" hreflang="ru" data-title="Солнечная светимость" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Luminusitati_sulari" title="Luminusitati sulari - siciliano" lang="scn" hreflang="scn" data-title="Luminusitati sulari" data-language-autonym="Sicilianu" data-language-local-name="siciliano" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Solar_luminosity" title="Solar luminosity - Simple English" lang="en-simple" hreflang="en-simple" data-title="Solar luminosity" 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/Svietivos%C5%A5_Slnka" title="Svietivosť Slnka - slovacco" lang="sk" hreflang="sk" data-title="Svietivosť Slnka" data-language-autonym="Slovenčina" data-language-local-name="slovacco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Son%C4%8Dev_izsev" title="Sončev izsev - sloveno" lang="sl" hreflang="sl" data-title="Sončev izsev" data-language-autonym="Slovenščina" data-language-local-name="sloveno" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Solluminositet" title="Solluminositet - svedese" lang="sv" hreflang="sv" data-title="Solluminositet" data-language-autonym="Svenska" data-language-local-name="svedese" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Mng%27aro_wa_Jua" title="Mng'aro wa Jua - swahili" lang="sw" hreflang="sw" data-title="Mng'aro wa Jua" data-language-autonym="Kiswahili" data-language-local-name="swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%81%E0%B8%B3%E0%B8%A5%E0%B8%B1%E0%B8%87%E0%B8%AA%E0%B9%88%E0%B8%AD%E0%B8%87%E0%B8%AA%E0%B8%A7%E0%B9%88%E0%B8%B2%E0%B8%87%E0%B8%94%E0%B8%A7%E0%B8%87%E0%B8%AD%E0%B8%B2%E0%B8%97%E0%B8%B4%E0%B8%95%E0%B8%A2%E0%B9%8C" title="กำลังส่องสว่างดวงอาทิตย์ - thailandese" lang="th" hreflang="th" data-title="กำลังส่องสว่างดวงอาทิตย์" data-language-autonym="ไทย" data-language-local-name="thailandese" 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/G%C3%BCne%C5%9Fsel_ayd%C4%B1nlatma_g%C3%BCc%C3%BC" title="Güneşsel aydınlatma gücü - turco" lang="tr" hreflang="tr" data-title="Güneşsel aydınlatma gücü" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk badge-Q70893996 mw-list-item" title=""><a href="https://uk.wikipedia.org/wiki/%D0%A1%D0%BE%D0%BD%D1%8F%D1%87%D0%BD%D0%B0_%D1%81%D0%B2%D1%96%D1%82%D0%BD%D1%96%D1%81%D1%82%D1%8C" title="Сонячна світність - ucraino" lang="uk" hreflang="uk" data-title="Сонячна світність" data-language-autonym="Українська" data-language-local-name="ucraino" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/%C4%90%E1%BB%99_s%C3%A1ng_c%E1%BB%A7a_M%E1%BA%B7t_Tr%E1%BB%9Di" title="Độ sáng của Mặt Trời - vietnamita" lang="vi" hreflang="vi" data-title="Độ sáng của Mặt Trời" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%A4%AA%E9%99%BD%E5%85%89%E5%BA%A6" title="太陽光度 - cinese" lang="zh" hreflang="zh" data-title="太陽光度" data-language-autonym="中文" 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id="mw-revision-info">Versione del 22 lug 2024 alle 13:34 di <a href="/wiki/Utente:IrishBot" class="mw-userlink" title="Utente:IrishBot" data-mw-revid="140316616"><bdi>IrishBot</bdi></a> <span class="mw-usertoollinks">(<a href="/wiki/Discussioni_utente:IrishBot" class="mw-redirect mw-usertoollinks-talk" title="Discussioni utente:IrishBot">discussione</a> | <a href="/wiki/Speciale:Contributi/IrishBot" class="mw-usertoollinks-contribs" title="Speciale:Contributi/IrishBot">contributi</a>)</span> <span class="comment">(Elimino wikilink da parametri editore, città, anno di {{<a href="/wiki/Template:Cita_libro" title="Template:Cita libro">Cita libro</a>}} come da manuale)</span></div><div id="mw-revision-nav">(<a href="/w/index.php?title=Luminosit%C3%A0_solare&diff=prev&oldid=140316616" title="Luminosità solare">diff</a>) <a href="/w/index.php?title=Luminosit%C3%A0_solare&direction=prev&oldid=140316616" title="Luminosità solare">← Versione meno recente</a> | Versione attuale (diff) | Versione più recente → (diff)</div></div></div></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="it" dir="ltr"><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Solar_evolution_(English).svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Solar_evolution_%28English%29.svg/330px-Solar_evolution_%28English%29.svg.png" decoding="async" width="330" height="235" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Solar_evolution_%28English%29.svg/495px-Solar_evolution_%28English%29.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Solar_evolution_%28English%29.svg/660px-Solar_evolution_%28English%29.svg.png 2x" data-file-width="544" data-file-height="388" /></a><figcaption>Evoluzione della luminosità solare, del raggio e della temperatura effettiva rapportata alla situazione al 2010. Ribas (2010)<sup id="cite_ref-ribas2010_1-0" class="reference"><a href="#cite_note-ribas2010-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></figcaption></figure> <p>In <a href="/wiki/Astronomia" title="Astronomia">astronomia</a>, la <b>luminosità solare standard</b> è un'<a href="/wiki/Unit%C3%A0_di_misura" title="Unità di misura">unità di misura</a>, usata per esprimere la <a href="/wiki/Luminosit%C3%A0_(astronomia)" title="Luminosità (astronomia)">luminosità</a> delle <a href="/wiki/Stella" title="Stella">stelle</a> e di <a href="/wiki/Oggetto_astronomico" class="mw-redirect" title="Oggetto astronomico">oggetti</a> più grandi quali le nebulose ad emissione. </p> <div class="mw-heading mw-heading2"><h2 id="Descrizione">Descrizione</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Luminosit%C3%A0_solare&veaction=edit&section=1" title="Modifica la sezione Descrizione" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Luminosit%C3%A0_solare&action=edit&section=1" title="Edit section's source code: Descrizione"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La luminosità solare è un'unità di misura del <a href="/wiki/Flusso_radiante" title="Flusso radiante">flusso radiante</a> emesso sotto forma di <a href="/wiki/Fotoni" class="mw-redirect" title="Fotoni">fotoni</a> e utilizzata in <a href="/wiki/Astronomia" title="Astronomia">astronomia</a> per misurare la luminosità di stelle, galassie e altri oggetti celesti confrontandola con l'emissione dal Sole. </p><p>La luminosità nominale è definita dall'<a href="/wiki/Unione_Astronomica_Internazionale" title="Unione Astronomica Internazionale">Unione Astronomica Internazionale</a> e il suo valore e il suo simbolo convenzionale sono:<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p><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_{\odot }=3,832\times 10^{26}\ \mathrm {W} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>L</mi> <mrow class="MJX-TeXAtom-ORD"> <mo>⊙</mo> </mrow> </msub> <mo>=</mo> <mn>3</mn> <mo>,</mo> <mn>832</mn> <mo>×</mo> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>26</mn> </mrow> </msup> <mtext> </mtext> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">W</mi> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle L_{\odot }=3,832\times 10^{26}\ \mathrm {W} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/1b968cb19766dfc7f828956b48b1f179abfc4295" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:21.887ex; height:3.009ex;" alt="{\displaystyle L_{\odot }=3,832\times 10^{26}\ \mathrm {W} }"></span> </p><p>Questo valore non include il contributo del neutrino solare che aggiungerebbe <span class="nowrap"><span data-sort-value="7024880000000000000♠"></span>8,8<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>24</sup> W</span>,<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> portando la luminosità totale a <span class="nowrap"><span data-sort-value="7026391600000000000♠"></span>3,916<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>26</sup> W</span>. </p><p>Il Sole è classificabile come una <a href="/wiki/Stella_variabile" title="Stella variabile">stella debolmente variabile</a>, per cui la sua luminosità tende a fluttuare.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Le fluttuazioni solari seguono un ciclo di <a href="/wiki/Ciclo_undecennale_dell%27attivit%C3%A0_solare" title="Ciclo undecennale dell'attività solare">variazione periodica quasi undecennale</a> causate dalla presenza delle <a href="/wiki/Macchie_solari" class="mw-redirect" title="Macchie solari">macchie solari</a> che comporta una fluttuazione di circa ±0.1%. Ci sono anche altre variazioni collegate a cicli di 200-300 anni, ma con valori molto inferiori.<sup id="cite_ref-Noed_5-0" class="reference"><a href="#cite_note-Noed-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>Il Sole risulta in effetti dall'<a href="/wiki/Analisi_statistica" class="mw-redirect" title="Analisi statistica">analisi statistica</a> una stella di grandezza e luminosità intermedie nella <a href="/wiki/Popolazione_stellare" class="mw-redirect" title="Popolazione stellare">popolazione stellare</a>. Per questo motivo, i suoi parametri descrittivi (<a href="/wiki/Massa_(fisica)" title="Massa (fisica)">massa</a> e luminosità in particolare) sono utilizzati come unità di misura per oggetti astronomici di dimensioni comparabili, come le altre stelle, o maggiori come le galassie. </p><p>Conoscendo la densità e la massa di una galassia, e presupponendo che sia costituita in prevalenza da stelle come il Sole, si può dedurre il numero di stelle che la compongono. </p> <div class="mw-heading mw-heading2"><h2 id="Note">Note</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Luminosit%C3%A0_solare&veaction=edit&section=2" title="Modifica la sezione Note" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Luminosit%C3%A0_solare&action=edit&section=2" title="Edit section's source code: Note"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-ribas2010-1"><a href="#cite_ref-ribas2010_1-0"><b>^</b></a> <span class="reference-text"><cite class="citation pubblicazione" style="font-style:normal"> Ignasi Ribas, <a rel="nofollow" class="external text" href="https://www.cambridge.org/core/services/aop-cambridge-core/content/view/293C0314C44A1A4AAF8175A3C288B50B/S1743921309992298a.pdf/sun_and_stars_as_the_primary_energy_input_in_planetary_atmospheres.pdf"><span style="font-style:italic;">The Sun and stars as the primary energy input in planetary atmospheres</span></a> (<span style="font-weight: bolder; font-size:80%"><abbr title="documento in formato PDF">PDF</abbr></span>), in <span style="font-style:italic;">Solar and Stellar Variability: Impact on Earth and Planets, Proceedings of the International Astronomical Union, IAU Symposium</span>, vol. 264, febbraio 2010, pp. 3–18, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2010IAUS..264....3R">2010IAUS..264....3R</a>, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1017%2FS1743921309992298">10.1017/S1743921309992298</a>, <a href="/wiki/ArXiv" title="ArXiv">arXiv</a>:<a rel="nofollow" class="external text" href="http://arxiv.org/abs/0911.4872">0911.4872</a>.</cite></span> </li> <li id="cite_note-2"><a href="#cite_ref-2"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="https://www.iau.org/static/resolutions/IAU2015_English.pdf"><span style="font-style:italic;">Resolution B3 on recommended nominal conversion constants for selected solar and planetary properties</span></a> (<span style="font-weight: bolder; font-size:80%"><abbr title="documento in formato PDF">PDF</abbr></span>), su <span style="font-style:italic;">iau.org</span>, International Astronomical Union, 2015. <small>URL consultato il 5 giugno 2018</small>.</cite></span> </li> <li id="cite_note-3"><a href="#cite_ref-3"><b>^</b></a> <span class="reference-text"><cite class="citation libro" style="font-style:normal"> John N. Bahcall, <a rel="nofollow" class="external text" href="https://archive.org/details/neutrinoastrophy0000bahc"><span style="font-style:italic;">Neutrino Astrophysics</span></a>, Cambridge University Press, 1989, p. <a rel="nofollow" class="external text" href="https://archive.org/details/neutrinoastrophy0000bahc/page/79">79</a>, <a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/Speciale:RicercaISBN/978-0-521-37975-5" title="Speciale:RicercaISBN/978-0-521-37975-5">978-0-521-37975-5</a>.</cite></span> </li> <li id="cite_note-4"><a href="#cite_ref-4"><b>^</b></a> <span class="reference-text"><cite class="citation pubblicazione" style="font-style:normal"> L. E. A. Vieira, A. Norton, T. Dudok De Wit, M. Kretzschmar, G. A. Schmidt e M. C. M. Cheung, <a rel="nofollow" class="external text" href="https://pubs.giss.nasa.gov/docs/2012/2012_Vieira_vi06000k.pdf"><span style="font-style:italic;">How the inclination of Earth's orbit affects incoming solar irradiance</span></a> (<span style="font-weight: bolder; font-size:80%"><abbr title="documento in formato PDF">PDF</abbr></span>), in <span style="font-style:italic;">Geophysical Research Letters</span>, vol. 39, n. 16, 2012, p. L16104 (8 pp.), <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2012GeoRL..3916104V">2012GeoRL..3916104V</a>, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1029%2F2012GL052950">10.1029/2012GL052950</a>, <a rel="nofollow" class="external text" href="https://hal-insu.archives-ouvertes.fr/insu-01179873">insu-01179873</a>.</cite></span> </li> <li id="cite_note-Noed-5"><a href="#cite_ref-Noed_5-0"><b>^</b></a> <span class="reference-text"><cite class="citation pubblicazione" style="font-style:normal"> Peter D. Noerdlinger, <span style="font-style:italic;">Solar Mass Loss, the Astronomical Unit, and the Scale of the Solar System</span>, in <span style="font-style:italic;">Celestial Mechanics and Dynamical Astronomy</span>, vol. 801, 2008, p. 3807, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2008arXiv0801.3807N">2008arXiv0801.3807N</a>, <a href="/wiki/ArXiv" title="ArXiv">arXiv</a>:<a rel="nofollow" class="external text" href="http://arxiv.org/abs/0801.3807">0801.3807</a>.</cite></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Voci_correlate">Voci correlate</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Luminosit%C3%A0_solare&veaction=edit&section=3" title="Modifica la sezione Voci correlate" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Luminosit%C3%A0_solare&action=edit&section=3" title="Edit section's source code: Voci correlate"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Costante_solare" title="Costante solare">Costante solare</a></li> <li><a href="/wiki/Massa_solare" title="Massa solare">Massa solare</a></li> <li><a href="/wiki/Raggio_solare" title="Raggio solare">Raggio solare</a></li></ul> <div class="noprint" style="width:100%; padding: 3px 0; display: flex; flex-wrap: wrap; row-gap: 4px; column-gap: 8px; box-sizing: border-box;"><div style="flex-basis: calc( 100% / 2 - 8px / 2 );"><style data-mw-deduplicate="TemplateStyles:r140555418">.mw-parser-output .itwiki-template-occhiello{width:100%;line-height:25px;border:1px solid #CCF;background-color:#F0EEFF;box-sizing:border-box}.mw-parser-output .itwiki-template-occhiello-progetto{background-color:#FAFAFA}@media screen{html.skin-theme-clientpref-night .mw-parser-output .itwiki-template-occhiello{background-color:#202122;border-color:#54595D}html.skin-theme-clientpref-night .mw-parser-output .itwiki-template-occhiello-progetto{background-color:#282929}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .itwiki-template-occhiello{background-color:#202122;border-color:#54595D}html.skin-theme-clientpref-os .mw-parser-output .itwiki-template-occhiello-progetto{background-color:#282929}}</style><div class="itwiki-template-occhiello"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Unbalanced_scales_simpler.svg" class="mw-file-description" title="Metrologia"><img alt=" " src="//upload.wikimedia.org/wikipedia/commons/thumb/1/17/Unbalanced_scales_simpler.svg/25px-Unbalanced_scales_simpler.svg.png" decoding="async" width="25" height="22" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/17/Unbalanced_scales_simpler.svg/38px-Unbalanced_scales_simpler.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/17/Unbalanced_scales_simpler.svg/50px-Unbalanced_scales_simpler.svg.png 2x" data-file-width="400" data-file-height="354" /></a></span> <b><a href="/wiki/Portale:Metrologia" title="Portale:Metrologia">Portale Metrologia</a></b></div></div><div style="flex-basis: calc( 100% / 2 - 8px / 2 );"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r140555418"><div class="itwiki-template-occhiello"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Jupiter_and_moon.png" class="mw-file-description" title="Sistema solare"><img alt=" " src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Jupiter_and_moon.png/25px-Jupiter_and_moon.png" decoding="async" width="25" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Jupiter_and_moon.png/38px-Jupiter_and_moon.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Jupiter_and_moon.png/50px-Jupiter_and_moon.png 2x" data-file-width="128" data-file-height="128" /></a></span> <b><a href="/wiki/Portale:Sistema_solare" title="Portale:Sistema solare">Portale Sistema solare</a></b></div></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; 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