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mw-list-item"><a href="/w/index.php?title=Special:%E7%B0%BD%E5%88%B0&returnto=%E8%B3%AA%E8%83%BD%E7%AD%89%E5%83%B9" title="唔係是必要簽到，但建議你噉做。[o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>簽到</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="站點"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">質能等價</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="去睇另一種語文嘅文章。有74種語言版本。" > <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-74" 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">74種語言</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/Massa-energieverband" title="Massa-energieverband – 南非荷蘭文" lang="af" hreflang="af" data-title="Massa-energieverband" data-language-autonym="Afrikaans" data-language-local-name="南非荷蘭文" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/%C3%84quivalenz_von_Masse_und_Energie" title="Äquivalenz von Masse und Energie – 德文（瑞士）" lang="gsw" hreflang="gsw" data-title="Äquivalenz von Masse und Energie" data-language-autonym="Alemannisch" data-language-local-name="德文（瑞士）" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AA%D9%83%D8%A7%D9%81%D8%A4_%D8%A7%D9%84%D9%83%D8%AA%D9%84%D8%A9_%D9%88%D8%A7%D9%84%D8%B7%D8%A7%D9%82%D8%A9" title="تكافؤ الكتلة والطاقة – 阿拉伯文" lang="ar" hreflang="ar" data-title="تكافؤ الكتلة والطاقة" data-language-autonym="العربية" data-language-local-name="阿拉伯文" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Equivalencia_ente_masa_y_enerx%C3%ADa" title="Equivalencia ente masa y enerxía – 阿斯圖里亞文" lang="ast" hreflang="ast" data-title="Equivalencia ente masa y enerxía" data-language-autonym="Asturianu" data-language-local-name="阿斯圖里亞文" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/K%C3%BCtl%C9%99_v%C9%99_enerjinin_ekvivalentliyi" title="Kütlə və enerjinin ekvivalentliyi – 亞塞拜然文" lang="az" hreflang="az" data-title="Kütlə və enerjinin ekvivalentliyi" data-language-autonym="Azərbaycanca" data-language-local-name="亞塞拜然文" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%AD%D0%BA%D0%B2%D1%96%D0%B2%D0%B0%D0%BB%D0%B5%D0%BD%D1%82%D0%BD%D0%B0%D1%81%D1%86%D1%8C_%D0%BC%D0%B0%D1%81%D1%8B_%D1%96_%D1%8D%D0%BD%D0%B5%D1%80%D0%B3%D1%96%D1%96" title="Эквівалентнасць масы і энергіі – 白俄羅斯文" lang="be" hreflang="be" data-title="Эквівалентнасць масы і энергіі" data-language-autonym="Беларуская" data-language-local-name="白俄羅斯文" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%95%D0%BA%D0%B2%D0%B8%D0%B2%D0%B0%D0%BB%D0%B5%D0%BD%D1%82%D0%BD%D0%BE%D1%81%D1%82_%D0%BD%D0%B0_%D0%BC%D0%B0%D1%81%D0%B0_%D0%B8_%D0%B5%D0%BD%D0%B5%D1%80%D0%B3%D0%B8%D1%8F" title="Еквивалентност на маса и енергия – 保加利亞文" lang="bg" hreflang="bg" data-title="Еквивалентност на маса и енергия" data-language-autonym="Български" data-language-local-name="保加利亞文" 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%AD%E0%A6%B0%E2%80%93%E0%A6%B6%E0%A6%95%E0%A7%8D%E0%A6%A4%E0%A6%BF_%E0%A6%B8%E0%A6%AE%E0%A6%A4%E0%A6%BE" title="ভর–শক্তি সমতা – 孟加拉文" lang="bn" hreflang="bn" data-title="ভর–শক্তি সমতা" data-language-autonym="বাংলা" data-language-local-name="孟加拉文" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/E%3Dmc%C2%B2" title="E=mc² – 布列塔尼文" lang="br" hreflang="br" data-title="E=mc²" data-language-autonym="Brezhoneg" data-language-local-name="布列塔尼文" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Equival%C3%A8ncia_entre_massa_i_energia" title="Equivalència entre massa i energia – 加泰羅尼亞文" lang="ca" hreflang="ca" data-title="Equivalència entre massa i energia" data-language-autonym="Català" data-language-local-name="加泰羅尼亞文" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%DB%8C%DB%95%DA%A9%D8%B3%D8%A7%D9%86%DB%8C_%D8%A8%D8%A7%D8%B1%D8%B3%D8%AA%DB%95-%D9%88%D8%B2%DB%95" title="یەکسانی بارستە-وزە – 索拉尼庫爾德文" lang="ckb" hreflang="ckb" data-title="یەکسانی بارستە-وزە" data-language-autonym="کوردی" data-language-local-name="索拉尼庫爾德文" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/E_%3D_mc%C2%B2" title="E = mc² – 捷克文" lang="cs" hreflang="cs" data-title="E = mc²" data-language-autonym="Čeština" data-language-local-name="捷克文" 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%AD%D0%BD%D0%B5%D1%80%D0%B3%D0%B8%D0%BF%D0%B5_%D0%BC%D0%B0%D1%81%D1%81%D0%B0_%D1%8D%D0%BA%D0%B2%D0%B8%D0%B2%D0%B0%D0%BB%D0%B5%D0%BD%D1%82%D0%BB%C4%83%D1%85%C4%95" title="Энергипе масса эквивалентлăхĕ – 楚瓦什文" lang="cv" hreflang="cv" data-title="Энергипе масса эквивалентлăхĕ" data-language-autonym="Чӑвашла" data-language-local-name="楚瓦什文" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/E%3Dmc%C2%B2" title="E=mc² – 丹麥文" lang="da" hreflang="da" data-title="E=mc²" data-language-autonym="Dansk" data-language-local-name="丹麥文" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/%C3%84quivalenz_von_Masse_und_Energie" title="Äquivalenz von Masse und Energie – 德文" lang="de" hreflang="de" data-title="Äquivalenz von Masse und Energie" data-language-autonym="Deutsch" data-language-local-name="德文" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-diq mw-list-item"><a href="https://diq.wikipedia.org/wiki/E%3Dmc%C2%B2" title="E=mc² – Zazaki" lang="diq" hreflang="diq" data-title="E=mc²" data-language-autonym="Zazaki" data-language-local-name="Zazaki" class="interlanguage-link-target"><span>Zazaki</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%99%CF%83%CE%BF%CE%B4%CF%85%CE%BD%CE%B1%CE%BC%CE%AF%CE%B1_%CE%BC%CE%AC%CE%B6%CE%B1%CF%82-%CE%B5%CE%BD%CE%AD%CF%81%CE%B3%CE%B5%CE%B9%CE%B1%CF%82" title="Ισοδυναμία μάζας-ενέργειας – 希臘文" lang="el" hreflang="el" data-title="Ισοδυναμία μάζας-ενέργειας" data-language-autonym="Ελληνικά" data-language-local-name="希臘文" 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/Mass%E2%80%93energy_equivalence" title="Mass–energy equivalence – 英文" lang="en" hreflang="en" data-title="Mass–energy equivalence" data-language-autonym="English" data-language-local-name="英文" 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/Masenergia_ekvivalento" title="Masenergia ekvivalento – 世界文" lang="eo" hreflang="eo" data-title="Masenergia ekvivalento" data-language-autonym="Esperanto" data-language-local-name="世界文" 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/Equivalencia_entre_masa_y_energ%C3%ADa" title="Equivalencia entre masa y energía – 西班牙文" lang="es" hreflang="es" data-title="Equivalencia entre masa y energía" data-language-autonym="Español" data-language-local-name="西班牙文" 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/E_%3D_mc%C2%B2" title="E = mc² – 愛沙尼亞文" lang="et" hreflang="et" data-title="E = mc²" data-language-autonym="Eesti" data-language-local-name="愛沙尼亞文" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu badge-Q17437796 badge-featuredarticle mw-list-item" title="正文"><a href="https://eu.wikipedia.org/wiki/E%3Dmc%C2%B2" title="E=mc² – 巴斯克文" lang="eu" hreflang="eu" data-title="E=mc²" data-language-autonym="Euskara" data-language-local-name="巴斯克文" 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%87%D9%85%E2%80%8C%D8%A7%D8%B1%D8%B2%DB%8C_%D8%AC%D8%B1%D9%85_%D9%88_%D8%A7%D9%86%D8%B1%DA%98%DB%8C" title="هم‌ارزی جرم و انرژی – 波斯文" lang="fa" hreflang="fa" data-title="هم‌ارزی جرم و انرژی" data-language-autonym="فارسی" data-language-local-name="波斯文" 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/E%3Dmc%C2%B2" title="E=mc² – 芬蘭文" lang="fi" hreflang="fi" data-title="E=mc²" data-language-autonym="Suomi" data-language-local-name="芬蘭文" 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/E%3Dmc2" title="E=mc2 – 法文" lang="fr" hreflang="fr" data-title="E=mc2" data-language-autonym="Français" data-language-local-name="法文" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Massa-enerzjyrelaasje" title="Massa-enerzjyrelaasje – 西弗里西亞文" lang="fy" hreflang="fy" data-title="Massa-enerzjyrelaasje" data-language-autonym="Frysk" data-language-local-name="西弗里西亞文" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Coibh%C3%A9is_maise_is_fuinnimh" title="Coibhéis maise is fuinnimh – 愛爾蘭文" lang="ga" hreflang="ga" data-title="Coibhéis maise is fuinnimh" data-language-autonym="Gaeilge" data-language-local-name="愛爾蘭文" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Equivalencia_masa-enerx%C3%ADa" title="Equivalencia masa-enerxía – 加里西亞文" lang="gl" hreflang="gl" data-title="Equivalencia masa-enerxía" data-language-autonym="Galego" data-language-local-name="加里西亞文" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/E%3Dmc%C2%B2" title="E=mc² – 希伯來文" lang="he" hreflang="he" data-title="E=mc²" data-language-autonym="עברית" data-language-local-name="希伯來文" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%A6%E0%A5%8D%E0%A4%B0%E0%A4%B5%E0%A5%8D%E0%A4%AF%E0%A4%AE%E0%A4%BE%E0%A4%A8-%E0%A4%8A%E0%A4%B0%E0%A5%8D%E0%A4%9C%E0%A4%BE_%E0%A4%B8%E0%A4%AE%E0%A4%A4%E0%A5%81%E0%A4%B2%E0%A5%8D%E0%A4%AF%E0%A4%A4%E0%A4%BE" title="द्रव्यमान-ऊर्जा समतुल्यता – 北印度文" lang="hi" hreflang="hi" data-title="द्रव्यमान-ऊर्जा समतुल्यता" data-language-autonym="हिन्दी" data-language-local-name="北印度文" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Ekvivalencija_mase_i_energije" title="Ekvivalencija mase i energije – 克羅埃西亞文" lang="hr" hreflang="hr" data-title="Ekvivalencija mase i energije" data-language-autonym="Hrvatski" data-language-local-name="克羅埃西亞文" 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/T%C3%B6meg-energia_ekvivalencia" title="Tömeg-energia ekvivalencia – 匈牙利文" lang="hu" hreflang="hu" data-title="Tömeg-energia ekvivalencia" data-language-autonym="Magyar" data-language-local-name="匈牙利文" 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/%D4%B6%D5%A1%D5%B6%D5%A3%D5%BE%D5%A1%D5%AE%D5%AB_%D6%87_%D5%A7%D5%B6%D5%A5%D6%80%D5%A3%D5%AB%D5%A1%D5%B5%D5%AB_%D5%B0%D5%A1%D5%B4%D5%A1%D6%80%D5%AA%D5%A5%D6%84%D5%B8%D6%82%D5%A9%D5%B5%D5%B8%D6%82%D5%B6" title="Զանգվածի և էներգիայի համարժեքություն – 亞美尼亞文" lang="hy" hreflang="hy" data-title="Զանգվածի և էներգիայի համարժեքություն" data-language-autonym="Հայերեն" data-language-local-name="亞美尼亞文" 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/Ekuivalensi_massa%E2%80%93energi" title="Ekuivalensi massa–energi – 印尼文" lang="id" hreflang="id" data-title="Ekuivalensi massa–energi" data-language-autonym="Bahasa Indonesia" data-language-local-name="印尼文" 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/E%3Dmc%C2%B2" title="E=mc² – 義大利文" lang="it" hreflang="it" data-title="E=mc²" data-language-autonym="Italiano" data-language-local-name="義大利文" 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%B3%AA%E9%87%8F%E3%81%A8%E3%82%A8%E3%83%8D%E3%83%AB%E3%82%AE%E3%83%BC%E3%81%AE%E7%AD%89%E4%BE%A1%E6%80%A7" title="質量とエネルギーの等価性 – 日文" lang="ja" hreflang="ja" data-title="質量とエネルギーの等価性" data-language-autonym="日本語" data-language-local-name="日文" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/E%3Dmc%C2%B2" title="E=mc² – 爪哇文" lang="jv" hreflang="jv" data-title="E=mc²" data-language-autonym="Jawa" data-language-local-name="爪哇文" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9C%D0%B0%D1%81%D1%81%D0%B0-%D1%8D%D0%BD%D0%B5%D1%80%D0%B3%D0%B8%D1%8F_%D1%8D%D0%BA%D0%B2%D0%B8%D0%B2%D0%B0%D0%BB%D0%B5%D0%BD%D1%82%D1%96" title="Масса-энергия эквиваленті – 哈薩克文" lang="kk" hreflang="kk" data-title="Масса-энергия эквиваленті" data-language-autonym="Қазақша" data-language-local-name="哈薩克文" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-km mw-list-item"><a href="https://km.wikipedia.org/wiki/%E1%9E%9A%E1%9E%BC%E1%9E%94%E1%9E%98%E1%9E%93%E1%9F%92%E1%9E%8F%E1%9E%9F%E1%9E%98%E1%9E%98%E1%9E%BC%E1%9E%9B%E1%9E%98%E1%9F%89%E1%9E%B6%E1%9E%9F%E1%9F%8B-%E1%9E%90%E1%9E%B6%E1%9E%98%E1%9E%96%E1%9E%9B" title="រូបមន្តសមមូលម៉ាស់-ថាមពល – 高棉文" lang="km" hreflang="km" data-title="រូបមន្តសមមូលម៉ាស់-ថាមពល" data-language-autonym="ភាសាខ្មែរ" data-language-local-name="高棉文" class="interlanguage-link-target"><span>ភាសាខ្មែរ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%A7%88%EB%9F%89-%EC%97%90%EB%84%88%EC%A7%80_%EB%93%B1%EA%B0%80" title="질량-에너지 등가 – 韓文" lang="ko" hreflang="ko" data-title="질량-에너지 등가" data-language-autonym="한국어" data-language-local-name="韓文" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Aequatio_massae_et_energiae" title="Aequatio massae et energiae – 拉丁文" lang="la" hreflang="la" data-title="Aequatio massae et energiae" data-language-autonym="Latina" data-language-local-name="拉丁文" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lad mw-list-item"><a href="https://lad.wikipedia.org/wiki/E%3Dmc%C2%B2" title="E=mc² – 拉迪諾文" lang="lad" hreflang="lad" data-title="E=mc²" data-language-autonym="Ladino" data-language-local-name="拉迪諾文" class="interlanguage-link-target"><span>Ladino</span></a></li><li class="interlanguage-link interwiki-lo mw-list-item"><a href="https://lo.wikipedia.org/wiki/%E0%BA%97%E0%BA%BD%E0%BA%9A%E0%BB%80%E0%BA%97%E0%BA%BB%E0%BB%88%E0%BA%B2%E0%BA%A1%E0%BA%A7%E0%BA%99-%E0%BA%9E%E0%BA%B0%E0%BA%A5%E0%BA%B1%E0%BA%87%E0%BA%87%E0%BA%B2%E0%BA%99" title="ທຽບເທົ່າມວນ-ພະລັງງານ – 寮文" lang="lo" hreflang="lo" data-title="ທຽບເທົ່າມວນ-ພະລັງງານ" data-language-autonym="ລາວ" data-language-local-name="寮文" class="interlanguage-link-target"><span>ລາວ</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Mas%C4%97s_ir_energijos_s%C4%85ry%C5%A1is" title="Masės ir energijos sąryšis – 立陶宛文" lang="lt" hreflang="lt" data-title="Masės ir energijos sąryšis" data-language-autonym="Lietuvių" data-language-local-name="立陶宛文" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Masas%E2%80%94ener%C4%A3ijas_proporcionalit%C4%81te" title="Masas—enerģijas proporcionalitāte – 拉脫維亞文" lang="lv" hreflang="lv" data-title="Masas—enerģijas proporcionalitāte" data-language-autonym="Latviešu" data-language-local-name="拉脫維亞文" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%95%D0%B4%D0%BD%D0%B0%D0%BA%D0%B2%D0%BE%D1%81%D1%82_%D0%BD%D0%B0_%D0%BC%D0%B0%D1%81%D0%B0%D1%82%D0%B0_%D0%B8_%D0%B5%D0%BD%D0%B5%D1%80%D0%B3%D0%B8%D1%98%D0%B0%D1%82%D0%B0" title="Еднаквост на масата и енергијата – 馬其頓文" lang="mk" hreflang="mk" data-title="Еднаквост на масата и енергијата" data-language-autonym="Македонски" data-language-local-name="馬其頓文" 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/E_%3D_mc%C2%B2" title="E = mc² – 馬來亞拉姆文" lang="ml" hreflang="ml" data-title="E = mc²" data-language-autonym="മലയാളം" data-language-local-name="馬來亞拉姆文" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/E%3Dmc%C2%B2" title="E=mc² – 馬來文" lang="ms" hreflang="ms" data-title="E=mc²" data-language-autonym="Bahasa Melayu" data-language-local-name="馬來文" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nap mw-list-item"><a href="https://nap.wikipedia.org/wiki/E%3Dmc%C2%B2" title="E=mc² – 拿波里文" lang="nap" hreflang="nap" data-title="E=mc²" data-language-autonym="Napulitano" data-language-local-name="拿波里文" class="interlanguage-link-target"><span>Napulitano</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Massa-energierelatie" title="Massa-energierelatie – 荷蘭文" lang="nl" hreflang="nl" data-title="Massa-energierelatie" data-language-autonym="Nederlands" data-language-local-name="荷蘭文" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Masseenergilova" title="Masseenergilova – 耐諾斯克挪威文" lang="nn" hreflang="nn" data-title="Masseenergilova" data-language-autonym="Norsk nynorsk" data-language-local-name="耐諾斯克挪威文" 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/Masseenergiloven" title="Masseenergiloven – 巴克摩挪威文" lang="nb" hreflang="nb" data-title="Masseenergiloven" data-language-autonym="Norsk bokmål" data-language-local-name="巴克摩挪威文" 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/R%C3%B3wnowa%C5%BCno%C5%9B%C4%87_masy_i_energii" title="Równoważność masy i energii – 波蘭文" lang="pl" hreflang="pl" data-title="Równoważność masy i energii" data-language-autonym="Polski" data-language-local-name="波蘭文" 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/Equival%C3%AAncia_massa%E2%80%93energia" title="Equivalência massa–energia – 葡萄牙文" lang="pt" hreflang="pt" data-title="Equivalência massa–energia" data-language-autonym="Português" data-language-local-name="葡萄牙文" 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/Echivalen%C8%9B%C4%83_mas%C4%83-energie" title="Echivalență masă-energie – 羅馬尼亞文" lang="ro" hreflang="ro" data-title="Echivalență masă-energie" data-language-autonym="Română" data-language-local-name="羅馬尼亞文" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru badge-Q17437798 badge-goodarticle mw-list-item" title="好文"><a href="https://ru.wikipedia.org/wiki/%D0%AD%D0%BA%D0%B2%D0%B8%D0%B2%D0%B0%D0%BB%D0%B5%D0%BD%D1%82%D0%BD%D0%BE%D1%81%D1%82%D1%8C_%D0%BC%D0%B0%D1%81%D1%81%D1%8B_%D0%B8_%D1%8D%D0%BD%D0%B5%D1%80%D0%B3%D0%B8%D0%B8" title="Эквивалентность массы и энергии – 俄文" lang="ru" hreflang="ru" data-title="Эквивалентность массы и энергии" data-language-autonym="Русский" data-language-local-name="俄文" 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/E%3Dmc%C2%B2" title="E=mc² – 西西里文" lang="scn" hreflang="scn" data-title="E=mc²" data-language-autonym="Sicilianu" data-language-local-name="西西里文" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Ekvivalentnost_mase_i_energije" title="Ekvivalentnost mase i energije – 塞爾維亞克羅埃西亞文" lang="sh" hreflang="sh" data-title="Ekvivalentnost mase i energije" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="塞爾維亞克羅埃西亞文" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B7%83%E0%B7%8A%E0%B6%9A%E0%B6%B1%E0%B7%8A%E0%B6%B0%E2%80%93%E0%B7%81%E0%B6%9A%E0%B7%8A%E0%B6%AD%E0%B7%92_%E0%B6%AD%E0%B7%94%E0%B6%BD%E0%B7%8A%E2%80%8D%E0%B6%BA%E0%B6%AD%E0%B7%8F%E0%B7%80%E0%B6%BA" title="ස්කන්ධ–ශක්ති තුල්‍යතාවය – 僧伽羅文" lang="si" hreflang="si" data-title="ස්කන්ධ–ශක්ති තුල්‍යතාවය" data-language-autonym="සිංහල" data-language-local-name="僧伽羅文" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Einsteinov_vz%C5%A5ah" title="Einsteinov vzťah – 斯洛伐克文" lang="sk" hreflang="sk" data-title="Einsteinov vzťah" data-language-autonym="Slovenčina" data-language-local-name="斯洛伐克文" 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/E_%3D_mc%C2%B2" title="E = mc² – 斯洛維尼亞文" lang="sl" hreflang="sl" data-title="E = mc²" data-language-autonym="Slovenščina" data-language-local-name="斯洛維尼亞文" 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%88%D0%B5%D0%B4%D0%BD%D0%B0%D0%BA%D0%BE%D1%81%D1%82_%D0%BC%D0%B0%D1%81%D0%B5_%D0%B8_%D0%B5%D0%BD%D0%B5%D1%80%D0%B3%D0%B8%D1%98%D0%B5" title="Једнакост масе и енергије – 塞爾維亞文" lang="sr" hreflang="sr" data-title="Једнакост масе и енергије" data-language-autonym="Српски / srpski" data-language-local-name="塞爾維亞文" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/E%3Dmc%C2%B2" title="E=mc² – 巽他文" lang="su" hreflang="su" data-title="E=mc²" data-language-autonym="Sunda" data-language-local-name="巽他文" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/E_%3D_mc%C2%B2" title="E = mc² – 瑞典文" lang="sv" hreflang="sv" data-title="E = mc²" data-language-autonym="Svenska" data-language-local-name="瑞典文" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%90%E0%AE%A9%E0%AF%8D%E0%AE%B8%E0%AF%8D%E0%AE%9F%E0%AF%80%E0%AE%A9%E0%AE%BF%E0%AE%A9%E0%AF%8D_%E0%AE%AA%E0%AF%8A%E0%AE%B0%E0%AF%81%E0%AE%A3%E0%AF%8D%E0%AE%AE%E0%AF%88_-_%E0%AE%86%E0%AE%B1%E0%AF%8D%E0%AE%B1%E0%AE%B2%E0%AF%8D_%E0%AE%9A%E0%AE%AE%E0%AE%A9%E0%AF%8D%E0%AE%AA%E0%AE%BE%E0%AE%9F%E0%AF%81" title="ஐன்ஸ்டீனின் பொருண்மை - ஆற்றல் சமன்பாடு – 坦米爾文" lang="ta" hreflang="ta" data-title="ஐன்ஸ்டீனின் பொருண்மை - ஆற்றல் சமன்பாடு" data-language-autonym="தமிழ்" data-language-local-name="坦米爾文" class="interlanguage-link-target"><span>தமிழ்</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%A1%E0%B8%A1%E0%B8%B9%E0%B8%A5%E0%B8%A1%E0%B8%A7%E0%B8%A5%E2%80%93%E0%B8%9E%E0%B8%A5%E0%B8%B1%E0%B8%87%E0%B8%87%E0%B8%B2%E0%B8%99" title="ความสมมูลมวล–พลังงาน – 泰文" lang="th" hreflang="th" data-title="ความสมมูลมวล–พลังงาน" data-language-autonym="ไทย" data-language-local-name="泰文" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Pagkakatumbas_ng_masa_at_enerhiya" title="Pagkakatumbas ng masa at enerhiya – 塔加路族文" lang="tl" hreflang="tl" data-title="Pagkakatumbas ng masa at enerhiya" data-language-autonym="Tagalog" data-language-local-name="塔加路族文" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/K%C3%BCtle-enerji_e%C5%9Fde%C4%9Ferli%C4%9Fi" title="Kütle-enerji eşdeğerliği – 土耳其文" lang="tr" hreflang="tr" data-title="Kütle-enerji eşdeğerliği" data-language-autonym="Türkçe" data-language-local-name="土耳其文" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D0%B8%D1%82%D0%B0%D0%BD%D0%BD%D1%8F_%D0%B5%D0%BA%D0%B2%D1%96%D0%B2%D0%B0%D0%BB%D0%B5%D0%BD%D1%82%D0%BD%D0%BE%D1%81%D1%82%D1%96_%D0%BC%D0%B0%D1%81%D0%B8_%D1%82%D0%B0_%D0%B5%D0%BD%D0%B5%D1%80%D0%B3%D1%96%D1%97" title="Питання еквівалентності маси та енергії – 烏克蘭文" lang="uk" hreflang="uk" data-title="Питання еквівалентності маси та енергії" data-language-autonym="Українська" data-language-local-name="烏克蘭文" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/E%3Dmc2" title="E=mc2 – 烏都文" lang="ur" hreflang="ur" data-title="E=mc2" data-language-autonym="اردو" data-language-local-name="烏都文" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/S%E1%BB%B1_t%C6%B0%C6%A1ng_%C4%91%C6%B0%C6%A1ng_kh%E1%BB%91i_l%C6%B0%E1%BB%A3ng%E2%80%93n%C4%83ng_l%C6%B0%E1%BB%A3ng" title="Sự tương đương khối lượng–năng lượng – 越南文" lang="vi" hreflang="vi" data-title="Sự tương đương khối lượng–năng lượng" data-language-autonym="Tiếng Việt" data-language-local-name="越南文" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E8%B4%A8%E8%83%BD%E7%AD%89%E4%BB%B7" title="质能等价 – 吳語" lang="wuu" hreflang="wuu" data-title="质能等价" data-language-autonym="吴语" data-language-local-name="吳語" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/E%3Dmc%C2%B2" title="E=mc² – 意第緒文" lang="yi" hreflang="yi" 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.mbox-image-div{width:52px}html.client-js body.skin-minerva .mw-parser-output .mbox-text-span{margin-left:23px!important}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}</style><table class="box-Unreferenced plainlinks metadata ambox ambox-content ambox-Unreferenced" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">呢篇文<b>冇<a href="/wiki/Wikipedia:Citing_sources" class="mw-redirect" title="Wikipedia:Citing sources">引</a>任何嘅<a href="/wiki/Wikipedia:Verifiability" class="mw-redirect" title="Wikipedia:Verifiability">出處</a></b>。<span class="hide-when-compact"> 請幫手<a class="external text" href="https://zh-yue.wikipedia.org/w/index.php?title=%E8%B3%AA%E8%83%BD%E7%AD%89%E5%83%B9&action=edit">改</a>好呢篇文，<a href="/wiki/Wikipedia:%E6%B1%82%E8%AD%89%E5%BE%97%E5%88%B0" title="Wikipedia:求證得到">加返出處同埋寫低根據</a>。冇根據或冇出處嘅嘢可能隨時受到質疑；經唔起質疑就會畀人<a href="/wiki/Wikipedia:%E6%B1%82%E8%AD%89%E5%BE%97%E5%88%B0" title="Wikipedia:求證得到">剷走</a>。</span></div></td></tr></tbody></table> <p><b>質能等價</b>，又叫<b>質能守恆</b>、<b>質能轉換公式</b>、<b>質能方程</b>，公式係<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=mc^{2}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>E</mi> <mo>=</mo> <mi>m</mi> <msup> <mi>c</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle E=mc^{2}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9f73dbd37a0cac34406ee89057fa1b36a1e6a18e" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:8.976ex; height:2.676ex;" alt="{\displaystyle E=mc^{2}}"></span>，其中<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>係能量，<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 m}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>m</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle m}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0a07d98bb302f3856cbabc47b2b9016692e3f7bc" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.04ex; height:1.676ex;" alt="{\displaystyle m}"></span>係質量，<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 c}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>c</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle c}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/86a67b81c2de995bd608d5b2df50cd8cd7d92455" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.007ex; height:1.676ex;" alt="{\displaystyle c}"></span>係光速常數。 </p> <table class="metadata plainlinks stub" style="background: transparent;" role="presentation"><tbody><tr class="noresize"> <td><span typeof="mw:File"><a href="/wiki/File:Feynmandiagram.svg" class="mw-file-description"><img alt="" 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