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vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Collegamenti_esterni"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Collegamenti esterni</span> </div> </a> <ul id="toc-Collegamenti_esterni-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">Radiazione</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 97 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-97" 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">97 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/Straling" title="Straling - afrikaans" lang="af" hreflang="af" data-title="Straling" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Strahlung" title="Strahlung - tedesco svizzero" lang="gsw" hreflang="gsw" data-title="Strahlung" data-language-autonym="Alemannisch" data-language-local-name="tedesco svizzero" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%8C%A8%E1%88%A8%E1%88%AB" title="ጨረራ - amarico" lang="am" hreflang="am" data-title="ጨረራ" data-language-autonym="አማርኛ" data-language-local-name="amarico" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A5%D8%B4%D8%B9%D8%A7%D8%B9" title="إشعاع - arabo" lang="ar" hreflang="ar" data-title="إشعاع" data-language-autonym="العربية" data-language-local-name="arabo" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D8%A5%D8%B4%D8%B9%D8%A7%D8%B9" title="إشعاع - arabo marocchino" lang="ary" hreflang="ary" data-title="إشعاع" data-language-autonym="الدارجة" data-language-local-name="arabo marocchino" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/%C5%9E%C3%BCalanma" title="Şüalanma - azerbaigiano" lang="az" hreflang="az" data-title="Şüalanma" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaigiano" 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%92%D1%8B%D0%BF%D1%80%D0%B0%D0%BC%D0%B5%D0%BD%D1%8C%D0%B2%D0%B0%D0%BD%D0%BD%D0%B5" title="Выпраменьванне - bielorusso" lang="be" hreflang="be" data-title="Выпраменьванне" data-language-autonym="Беларуская" data-language-local-name="bielorusso" 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%92%D1%8B%D0%BF%D1%80%D0%B0%D0%BC%D0%B5%D0%BD%D1%8C%D0%B2%D0%B0%D0%BD%D1%8C%D0%BD%D0%B5" title="Выпраменьваньне - Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Выпраменьваньне" 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%9B%D1%8A%D1%87%D0%B5%D0%BD%D0%B8%D0%B5" title="Лъчение - bulgaro" lang="bg" hreflang="bg" data-title="Лъчение" 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%AC%E0%A6%BF%E0%A6%95%E0%A6%BF%E0%A6%B0%E0%A6%A3" title="বিকিরণ - bengalese" lang="bn" hreflang="bn" data-title="বিকিরণ" data-language-autonym="বাংলা" data-language-local-name="bengalese" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Zra%C4%8Denje" title="Zračenje - bosniaco" lang="bs" hreflang="bs" data-title="Zračenje" data-language-autonym="Bosanski" data-language-local-name="bosniaco" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Radiaci%C3%B3" title="Radiació - catalano" lang="ca" hreflang="ca" data-title="Radiació" 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/Z%C3%A1%C5%99en%C3%AD" title="Záření - ceco" lang="cs" hreflang="cs" data-title="Záření" 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%9F%D0%B0%D0%B9%C4%83%D1%80%D0%BA%D0%B0%D0%BB%D0%B0%D0%B2" title="Пайăркалав - ciuvascio" lang="cv" hreflang="cv" data-title="Пайăркалав" data-language-autonym="Чӑвашла" data-language-local-name="ciuvascio" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Ymbelydredd" title="Ymbelydredd - gallese" lang="cy" hreflang="cy" data-title="Ymbelydredd" data-language-autonym="Cymraeg" data-language-local-name="gallese" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Str%C3%A5ling" title="Stråling - danese" lang="da" hreflang="da" data-title="Stråling" data-language-autonym="Dansk" data-language-local-name="danese" 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/Strahlung" title="Strahlung - tedesco" lang="de" hreflang="de" data-title="Strahlung" data-language-autonym="Deutsch" data-language-local-name="tedesco" 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%91%CE%BA%CF%84%CE%B9%CE%BD%CE%BF%CE%B2%CE%BF%CE%BB%CE%AF%CE%B1" title="Ακτινοβολία - greco" lang="el" hreflang="el" data-title="Ακτινοβολία" data-language-autonym="Ελληνικά" data-language-local-name="greco" 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/Radiation" title="Radiation - inglese" lang="en" hreflang="en" data-title="Radiation" 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/Radiado" title="Radiado - esperanto" lang="eo" hreflang="eo" data-title="Radiado" 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/Radiaci%C3%B3n" title="Radiación - spagnolo" lang="es" hreflang="es" data-title="Radiación" data-language-autonym="Español" data-language-local-name="spagnolo" 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/Kiirgus" title="Kiirgus - estone" lang="et" hreflang="et" data-title="Kiirgus" data-language-autonym="Eesti" data-language-local-name="estone" 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/Erradiazio" title="Erradiazio - basco" lang="eu" hreflang="eu" data-title="Erradiazio" 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%D8%B4" title="تابش - persiano" lang="fa" hreflang="fa" data-title="تابش" 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/S%C3%A4teily" title="Säteily - finlandese" lang="fi" hreflang="fi" data-title="Säteily" data-language-autonym="Suomi" data-language-local-name="finlandese" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fiu-vro mw-list-item"><a href="https://fiu-vro.wikipedia.org/wiki/Kirg%C3%A4mine" title="Kirgämine - võro" lang="vro" hreflang="vro" data-title="Kirgämine" data-language-autonym="Võro" data-language-local-name="võro" class="interlanguage-link-target"><span>Võro</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Rayonnement" title="Rayonnement - francese" lang="fr" hreflang="fr" data-title="Rayonnement" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Rada%C3%ADocht" title="Radaíocht - irlandese" lang="ga" hreflang="ga" data-title="Radaíocht" data-language-autonym="Gaeilge" data-language-local-name="irlandese" 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/Radiaci%C3%B3n" title="Radiación - galiziano" lang="gl" hreflang="gl" data-title="Radiación" data-language-autonym="Galego" data-language-local-name="galiziano" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ha mw-list-item"><a href="https://ha.wikipedia.org/wiki/Rashin_haske" title="Rashin haske - hausa" lang="ha" hreflang="ha" data-title="Rashin haske" data-language-autonym="Hausa" data-language-local-name="hausa" class="interlanguage-link-target"><span>Hausa</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A7%D7%A8%D7%99%D7%A0%D7%94" title="קרינה - ebraico" lang="he" hreflang="he" data-title="קרינה" data-language-autonym="עברית" data-language-local-name="ebraico" 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%B5%E0%A4%BF%E0%A4%95%E0%A4%BF%E0%A4%B0%E0%A4%A3" title="विकिरण - hindi" lang="hi" hreflang="hi" data-title="विकिरण" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Radijacija" title="Radijacija - croato" lang="hr" hreflang="hr" data-title="Radijacija" data-language-autonym="Hrvatski" data-language-local-name="croato" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Radyasyon" title="Radyasyon - creolo haitiano" lang="ht" hreflang="ht" data-title="Radyasyon" data-language-autonym="Kreyòl ayisyen" data-language-local-name="creolo haitiano" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%83%D5%A1%D5%BC%D5%A1%D5%A3%D5%A1%D5%B5%D5%A9%D5%B8%D6%82%D5%B4" title="Ճառագայթում - armeno" lang="hy" hreflang="hy" data-title="Ճառագայթում" 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/Radiasi" title="Radiasi - indonesiano" lang="id" hreflang="id" data-title="Radiasi" 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-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Radiado" title="Radiado - ido" lang="io" hreflang="io" data-title="Radiado" data-language-autonym="Ido" data-language-local-name="ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Geislun" title="Geislun - islandese" lang="is" hreflang="is" data-title="Geislun" data-language-autonym="Íslenska" data-language-local-name="islandese" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E6%94%BE%E5%B0%84" title="放射 - giapponese" lang="ja" hreflang="ja" data-title="放射" 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-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Radhiyasi" title="Radhiyasi - giavanese" lang="jv" hreflang="jv" data-title="Radhiyasi" data-language-autonym="Jawa" data-language-local-name="giavanese" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%A0%E1%83%90%E1%83%93%E1%83%98%E1%83%90%E1%83%AA%E1%83%98%E1%83%90" title="რადიაცია - georgiano" lang="ka" hreflang="ka" data-title="რადიაცია" data-language-autonym="ქართული" data-language-local-name="georgiano" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kbp mw-list-item"><a href="https://kbp.wikipedia.org/wiki/C%C9%9Bkas%C9%A9_l%C9%A9z%C9%A9t%CA%8B" title="Cɛkasɩ lɩzɩtʋ - Kabiye" lang="kbp" hreflang="kbp" data-title="Cɛkasɩ lɩzɩtʋ" data-language-autonym="Kabɩyɛ" data-language-local-name="Kabiye" class="interlanguage-link-target"><span>Kabɩyɛ</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%A0%D0%B0%D0%B4%D0%B8%D0%B0%D1%86%D0%B8%D1%8F" title="Радиация - kazako" lang="kk" hreflang="kk" data-title="Радиация" data-language-autonym="Қазақша" data-language-local-name="kazako" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%B5%E0%B2%BF%E0%B2%95%E0%B2%BF%E0%B2%B0%E0%B2%A3" title="ವಿಕಿರಣ - kannada" lang="kn" hreflang="kn" data-title="ವಿಕಿರಣ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%B0%A9%EC%82%AC%EC%84%A0" title="방사선 - coreano" lang="ko" hreflang="ko" data-title="방사선" data-language-autonym="한국어" data-language-local-name="coreano" 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/Radiatio" title="Radiatio - latino" lang="la" hreflang="la" data-title="Radiatio" data-language-autonym="Latina" data-language-local-name="latino" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Stralung" title="Stralung - lussemburghese" lang="lb" hreflang="lb" data-title="Stralung" data-language-autonym="Lëtzebuergesch" data-language-local-name="lussemburghese" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lo mw-list-item"><a href="https://lo.wikipedia.org/wiki/%E0%BA%A5%E0%BA%B1%E0%BA%87%E0%BA%AA%E0%BA%B5" title="ລັງສີ - lao" lang="lo" hreflang="lo" data-title="ລັງສີ" data-language-autonym="ລາວ" data-language-local-name="lao" 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/Spinduliuot%C4%97" title="Spinduliuotė - lituano" lang="lt" hreflang="lt" data-title="Spinduliuotė" data-language-autonym="Lietuvių" data-language-local-name="lituano" 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/Starojums" title="Starojums - lettone" lang="lv" hreflang="lv" data-title="Starojums" data-language-autonym="Latviešu" data-language-local-name="lettone" 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%97%D1%80%D0%B0%D1%87%D0%B5%D1%9A%D0%B5" title="Зрачење - macedone" lang="mk" hreflang="mk" data-title="Зрачење" data-language-autonym="Македонски" data-language-local-name="macedone" 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%B5%E0%B4%BF%E0%B4%95%E0%B4%BF%E0%B4%B0%E0%B4%A3%E0%B4%82" title="വികിരണം - malayalam" lang="ml" hreflang="ml" data-title="വികിരണം" data-language-autonym="മലയാളം" data-language-local-name="malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%A6%D0%B0%D1%86%D1%80%D0%B0%D0%B3_%D1%82%D1%83%D1%8F%D0%B0" title="Цацраг туяа - mongolo" lang="mn" hreflang="mn" data-title="Цацраг туяа" data-language-autonym="Монгол" data-language-local-name="mongolo" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A4%BE%E0%A4%B0%E0%A4%A3" title="प्रारण - marathi" lang="mr" hreflang="mr" data-title="प्रारण" 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/Sinaran" title="Sinaran - malese" lang="ms" hreflang="ms" data-title="Sinaran" 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 badge-Q70893996 mw-list-item" title=""><a href="https://my.wikipedia.org/wiki/%E1%80%9B%E1%80%B1%E1%80%92%E1%80%AE%E1%80%9A%E1%80%AD%E1%80%AF_%E1%80%9E%E1%80%90%E1%80%B9%E1%80%90%E1%80%AD%E1%80%80%E1%80%BC%E1%80%BD%E1%80%81%E1%80%BC%E1%80%84%E1%80%BA%E1%80%B8" title="ရေဒီယို သတ္တိကြွခြင်း - birmano" lang="my" hreflang="my" data-title="ရေဒီယို သတ္တိကြွခြင်း" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="birmano" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%B5%E0%A4%BF%E0%A4%95%E0%A4%BF%E0%A4%B0%E0%A4%A3" title="विकिरण - nepalese" lang="ne" hreflang="ne" data-title="विकिरण" data-language-autonym="नेपाली" data-language-local-name="nepalese" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Straling" title="Straling - olandese" lang="nl" hreflang="nl" data-title="Straling" data-language-autonym="Nederlands" data-language-local-name="olandese" 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/Str%C3%A5ling" title="Stråling - norvegese nynorsk" lang="nn" hreflang="nn" data-title="Stråling" data-language-autonym="Norsk nynorsk" data-language-local-name="norvegese 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/Str%C3%A5ling" title="Stråling - norvegese bokmål" lang="nb" hreflang="nb" data-title="Stråling" 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-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Raionament" title="Raionament - occitano" lang="oc" hreflang="oc" data-title="Raionament" data-language-autonym="Occitan" data-language-local-name="occitano" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Madana" title="Madana - oromo" lang="om" hreflang="om" data-title="Madana" data-language-autonym="Oromoo" data-language-local-name="oromo" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%B8%E0%A9%B0%E0%A8%B5%E0%A8%BF%E0%A8%B9%E0%A8%A3" title="ਸੰਵਿਹਣ - punjabi" lang="pa" hreflang="pa" data-title="ਸੰਵਿਹਣ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Promieniowanie" title="Promieniowanie - polacco" lang="pl" hreflang="pl" data-title="Promieniowanie" data-language-autonym="Polski" data-language-local-name="polacco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Radiassion" title="Radiassion - piemontese" lang="pms" hreflang="pms" data-title="Radiassion" data-language-autonym="Piemontèis" data-language-local-name="piemontese" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D9%88%DA%93%D8%A7%D9%86%DA%AB%D9%87_%D8%A7%DA%86%D9%88%D9%86%D9%87" title="وړانګه اچونه - pashto" lang="ps" hreflang="ps" data-title="وړانګه اچونه" data-language-autonym="پښتو" data-language-local-name="pashto" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Radia%C3%A7%C3%A3o" title="Radiação - portoghese" lang="pt" hreflang="pt" data-title="Radiação" data-language-autonym="Português" data-language-local-name="portoghese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Illanchay" title="Illanchay - quechua" lang="qu" hreflang="qu" data-title="Illanchay" data-language-autonym="Runa Simi" data-language-local-name="quechua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Radia%C8%9Bie" title="Radiație - rumeno" lang="ro" hreflang="ro" data-title="Radiație" 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%98%D0%B7%D0%BB%D1%83%D1%87%D0%B5%D0%BD%D0%B8%D0%B5" title="Излучение - russo" lang="ru" hreflang="ru" data-title="Излучение" data-language-autonym="Русский" data-language-local-name="russo" 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/Zra%C4%8Denje" title="Zračenje - serbo-croato" lang="sh" hreflang="sh" data-title="Zračenje" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbo-croato" 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%80%E0%B7%92%E0%B6%9A%E0%B7%92%E0%B6%BB%E0%B6%AB%E0%B7%81%E0%B7%93%E0%B6%BD%E0%B7%93%E0%B6%AD%E0%B7%8F%E0%B7%80" title="විකිරණශීලීතාව - singalese" lang="si" hreflang="si" data-title="විකිරණශීලීතාව" data-language-autonym="සිංහල" data-language-local-name="singalese" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Radiation" title="Radiation - Simple English" lang="en-simple" hreflang="en-simple" data-title="Radiation" 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/%C5%BDiarenie" title="Žiarenie - slovacco" lang="sk" hreflang="sk" data-title="Žiarenie" 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/Sevanje" title="Sevanje - sloveno" lang="sl" hreflang="sl" data-title="Sevanje" data-language-autonym="Slovenščina" data-language-local-name="sloveno" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Rrezatimi" title="Rrezatimi - albanese" lang="sq" hreflang="sq" data-title="Rrezatimi" data-language-autonym="Shqip" data-language-local-name="albanese" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%97%D1%80%D0%B0%D1%87%D0%B5%D1%9A%D0%B5" title="Зрачење - serbo" lang="sr" hreflang="sr" data-title="Зрачење" data-language-autonym="Српски / srpski" data-language-local-name="serbo" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Stroalenge" title="Stroalenge - saterfriesisch" lang="stq" hreflang="stq" data-title="Stroalenge" data-language-autonym="Seeltersk" data-language-local-name="saterfriesisch" class="interlanguage-link-target"><span>Seeltersk</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Radiasi" title="Radiasi - sundanese" lang="su" hreflang="su" data-title="Radiasi" data-language-autonym="Sunda" data-language-local-name="sundanese" 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/Str%C3%A5lning" title="Strålning - svedese" lang="sv" hreflang="sv" data-title="Strålning" 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/Mnururisho" title="Mnururisho - swahili" lang="sw" hreflang="sw" data-title="Mnururisho" data-language-autonym="Kiswahili" data-language-local-name="swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%95%E0%AE%A4%E0%AE%BF%E0%AE%B0%E0%AF%8D%E0%AE%B5%E0%AF%80%E0%AE%9A%E0%AF%8D%E0%AE%9A%E0%AF%81" title="கதிர்வீச்சு - tamil" lang="ta" hreflang="ta" data-title="கதிர்வீச்சு" data-language-autonym="தமிழ்" data-language-local-name="tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%B5%E0%B0%BF%E0%B0%95%E0%B0%BF%E0%B0%B0%E0%B0%A3%E0%B0%82" title="వికిరణం - telugu" lang="te" hreflang="te" data-title="వికిరణం" data-language-autonym="తెలుగు" data-language-local-name="telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%90%D1%84%D0%BA%D0%B0%D0%BD%D0%B8%D1%88%D0%BE%D1%82" title="Афканишот - tagico" lang="tg" hreflang="tg" data-title="Афканишот" data-language-autonym="Тоҷикӣ" data-language-local-name="tagico" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B9%81%E0%B8%9C%E0%B9%88%E0%B8%A3%E0%B8%B1%E0%B8%87%E0%B8%AA%E0%B8%B5" title="การแผ่รังสี - thailandese" lang="th" hreflang="th" data-title="การแผ่รังสี" data-language-autonym="ไทย" data-language-local-name="thailandese" 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/Radiyasyon" title="Radiyasyon - tagalog" lang="tl" hreflang="tl" data-title="Radiyasyon" data-language-autonym="Tagalog" data-language-local-name="tagalog" 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/Radyasyon" title="Radyasyon - turco" lang="tr" hreflang="tr" data-title="Radyasyon" data-language-autonym="Türkçe" data-language-local-name="turco" 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%92%D0%B8%D0%BF%D1%80%D0%BE%D0%BC%D1%96%D0%BD%D0%B5%D0%BD%D0%BD%D1%8F" title="Випромінення - ucraino" lang="uk" hreflang="uk" data-title="Випромінення" data-language-autonym="Українська" data-language-local-name="ucraino" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D8%A7%D8%B4%D8%B9%D8%A7%D8%B9_(%D8%B7%D8%A8%DB%8C%D8%B9%DB%8C%D8%A7%D8%AA)" title="اشعاع (طبیعیات) - urdu" lang="ur" hreflang="ur" data-title="اشعاع (طبیعیات)" data-language-autonym="اردو" data-language-local-name="urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Radiatsiya" title="Radiatsiya - uzbeco" lang="uz" hreflang="uz" data-title="Radiatsiya" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbeco" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/B%E1%BB%A9c_x%E1%BA%A1" title="Bức xạ - vietnamita" lang="vi" hreflang="vi" data-title="Bức xạ" 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-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Radyasyon" title="Radyasyon - waray" lang="war" hreflang="war" data-title="Radyasyon" data-language-autonym="Winaray" data-language-local-name="waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E8%BE%90%E5%B0%84" title="辐射 - wu" lang="wuu" hreflang="wuu" data-title="辐射" data-language-autonym="吴语" data-language-local-name="wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-xmf mw-list-item"><a href="https://xmf.wikipedia.org/wiki/%E1%83%A0%E1%83%90%E1%83%93%E1%83%98%E1%83%90%E1%83%AA%E1%83%98%E1%83%90" title="რადიაცია - mengrelio" lang="xmf" hreflang="xmf" data-title="რადიაცია" data-language-autonym="მარგალური" data-language-local-name="mengrelio" class="interlanguage-link-target"><span>მარგალური</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E8%BE%90%E5%B0%84" title="辐射 - cinese" lang="zh" hreflang="zh" data-title="辐射" data-language-autonym="中文" data-language-local-name="cinese" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E8%BC%BB%E5%B0%84" title="輻射 - cantonese" lang="yue" hreflang="yue" data-title="輻射" data-language-autonym="粵語" data-language-local-name="cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zu mw-list-item"><a href="https://zu.wikipedia.org/wiki/IMiyonzi" title="IMiyonzi - zulu" lang="zu" hreflang="zu" data-title="IMiyonzi" data-language-autonym="IsiZulu" data-language-local-name="zulu" class="interlanguage-link-target"><span>IsiZulu</span></a></li> </ul> <div 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.hatnote.nota-disambigua{clear:both;margin-top:0;padding:.05em .5em}</style> <style data-mw-deduplicate="TemplateStyles:r139142988">.mw-parser-output .hatnote-content{align-items:center;display:flex}.mw-parser-output .hatnote-icon{flex-shrink:0}.mw-parser-output .hatnote-icon img{display:flex}.mw-parser-output .hatnote-text{font-style:italic}body:not(.skin-minerva) .mw-parser-output .hatnote{border:1px solid #CCC;display:flex;margin:.5em 0;padding:.2em .5em}body:not(.skin-minerva) .mw-parser-output .hatnote-text{padding-left:.5em}body.skin-minerva .mw-parser-output .hatnote-icon{padding-right:8px}body.skin-minerva .mw-parser-output .hatnote-icon img{height:auto;width:16px}body.skin--responsive .mw-parser-output .hatnote a.new{color:#d73333}body.skin--responsive .mw-parser-output .hatnote a.new:visited{color:#a55858}</style> <div class="hatnote noprint nota-disambigua"> <div class="hatnote-content"><span class="noviewer hatnote-icon" typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/18px-Nota_disambigua.svg.png" decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/27px-Nota_disambigua.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/36px-Nota_disambigua.svg.png 2x" data-file-width="200" data-file-height="200" /></span></span> <span class="hatnote-text"><a href="/wiki/Aiuto:Disambiguazione" title="Aiuto:Disambiguazione">Disambiguazione</a> – Se stai cercando altri significati, vedi <b><a href="/wiki/Radiazione_(disambigua)" class="mw-disambig" title="Radiazione (disambigua)">Radiazione (disambigua)</a></b>.</span></div> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r130658281"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r139142988"> <div class="hatnote noprint nota-disambigua"> <div class="hatnote-content"><span class="noviewer hatnote-icon" typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/18px-Nota_disambigua.svg.png" decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/27px-Nota_disambigua.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/36px-Nota_disambigua.svg.png 2x" data-file-width="200" data-file-height="200" /></span></span> <span class="hatnote-text"><a href="/wiki/Aiuto:Disambiguazione" title="Aiuto:Disambiguazione">Disambiguazione</a> – Se stai cercando le radiazioni ionizzanti emesse da sostanze radioattive, vedi <b><a href="/wiki/Radioattivit%C3%A0" title="Radioattività">Radioattività</a></b>.</span></div> </div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Heat-transmittance-means1.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Heat-transmittance-means1.jpg/220px-Heat-transmittance-means1.jpg" decoding="async" width="220" height="128" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Heat-transmittance-means1.jpg/330px-Heat-transmittance-means1.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Heat-transmittance-means1.jpg/440px-Heat-transmittance-means1.jpg 2x" data-file-width="550" data-file-height="319" /></a><figcaption>La <a href="/wiki/Radiazione_termica" title="Radiazione termica">radiazione termica</a> (<i>Radiation</i> nell'immagine) è uno dei modi principali in cui si trasmette il calore</figcaption></figure> <p>Con <b>radiazione</b>, in <a href="/wiki/Fisica" title="Fisica">fisica</a>, si indica generalmente il trasporto di <a href="/wiki/Energia" title="Energia">energia</a> nello <a href="/wiki/Spazio_(fisica)" title="Spazio (fisica)">spazio</a> senza movimento di corpi macroscopici e senza il supporto di mezzi materiali. Le radiazioni, in base al loro comportamento prevalente, possono essere corpuscolari (particelle sub-atomiche dotate di <a href="/wiki/Massa_(fisica)" title="Massa (fisica)">massa</a> che si muovono a <a href="/wiki/Velocit%C3%A0" title="Velocità">velocità</a> prossime a quella della <a href="/wiki/Luce" title="Luce">luce</a>) o elettromagnetiche (<a href="/wiki/Fotoni" class="mw-redirect" title="Fotoni">fotoni</a>). </p> <meta property="mw:PageProp/toc" /> <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=Radiazione&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=Radiazione&action=edit&section=1" title="Edit section's source code: Descrizione"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:EM_Spectrum_Properties_it.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/EM_Spectrum_Properties_it.svg/220px-EM_Spectrum_Properties_it.svg.png" decoding="async" width="220" height="129" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/EM_Spectrum_Properties_it.svg/330px-EM_Spectrum_Properties_it.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/EM_Spectrum_Properties_it.svg/440px-EM_Spectrum_Properties_it.svg.png 2x" data-file-width="680" data-file-height="400" /></a><figcaption>Proprietà delle radiazioni elettromagnetiche</figcaption></figure> <p>Caratteristica comune a quasi tutti i tipi di radiazione (luminosa, termica, etc.) è la cessione di <a href="/wiki/Energia" title="Energia">energia</a> alla <a href="/wiki/Materia_(fisica)" title="Materia (fisica)">materia</a>. Questa "cessione" di energia può essere spiegata, nel caso di radiazioni corpuscolari, considerando l'<a href="/wiki/Energia_cinetica" title="Energia cinetica">energia cinetica</a> posseduta dalle <a href="/wiki/Fisica_delle_particelle" title="Fisica delle particelle">particelle</a> che compongono la relativa radiazione; la particella, a contatto con la materia, può cederle la propria <a href="/wiki/Energia_cinetica" title="Energia cinetica">energia cinetica</a>, generalmente sotto forma di <a href="/wiki/Energia_termica" title="Energia termica">energia termica</a> e luminosa. </p><p>Un particolare tipo di radiazione è costituito dalle <a href="/wiki/Radiazione_elettromagnetica" title="Radiazione elettromagnetica">onde elettromagnetiche</a>, caratterizzate da una <a href="/wiki/Velocit%C3%A0_della_luce" title="Velocità della luce">velocità finita e costante nel vuoto</a>, pari a circa <span class="nowrap"><span data-sort-value="7008299792000000000♠"></span>299<span style="margin-left:.25em;">792</span> km/s</span> (valore arrotondato spesso in <span class="nowrap"><span data-sort-value="7008300000000000000♠"></span>3<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>8</sup> m/s</span>), indicata con <i>c</i>, da una particolare <i><a href="/wiki/Frequenza" title="Frequenza">frequenza</a></i> e dalla sua <i><a href="/wiki/Lunghezza_d%27onda" title="Lunghezza d'onda">lunghezza d'onda</a></i>, indicata con il simbolo <i>λ</i> (lambda); la frequenza <i>f</i> è definita come il numero di lunghezze d'onda che passano in un secondo per un determinato punto dello spazio, ed è possibile ricavarlo numericamente considerando la relazione: </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 f={\frac {c}{\lambda }}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>f</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mi>c</mi> <mi>λ</mi> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle f={\frac {c}{\lambda }}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/4dc0fb0b3be8b879ff12bb534c0b82ff36f7eb7b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:6.568ex; height:4.843ex;" alt="{\displaystyle f={\frac {c}{\lambda }}}"></span></dd></dl> <p>Questa relazione è sempre valida in quanto <i>c</i> è una costante. </p><p>Tanto più alto è il valore della frequenza dell'onda, tanto minore è la sua lunghezza d'onda, quindi la velocità della luce risulta costante per ogni radiazione elettromagnetica nel vuoto. La <a href="/wiki/Luce_visibile" class="mw-redirect" title="Luce visibile">luce visibile</a> (o meglio, la luce visibile per l'occhio umano) è la radiazione elettromagnetica con lunghezza d'onda che va dai circa <span class="nowrap"><span data-sort-value="6993380000000000000♠"></span>380 <a href="/wiki/Nanometro" title="Nanometro">nm</a></span> del violetto ai circa <span class="nowrap"><span data-sort-value="6993760000000000000♠"></span>760 nm</span> del rosso. </p> <table class="wikitable"> <tbody><tr> <th><div style="text-align:left;">Tipologia di radiazione</div> </th> <th><div style="text-align:left;">Lunghezza d'onda</div> </th></tr> <tr> <td>Onde elettriche </td> <td>Tra 10<sup>6</sup> e 10<sup>4</sup> m </td></tr> <tr> <td><a href="/wiki/Onde_radio" title="Onde radio">Onde radio</a> </td> <td>Tra 10<sup>4</sup> e 10<sup>−2</sup> m </td></tr> <tr> <td><a href="/wiki/Microonde" title="Microonde">Microonde</a> </td> <td>Tra 10 e 10<sup>−3</sup> m </td></tr> <tr> <td><a href="/wiki/Radiazione_infrarossa" title="Radiazione infrarossa">Raggi infrarossi</a> </td> <td>Tra 10<sup>−4</sup> e 10<sup>−6</sup> cm </td></tr> <tr> <td><a href="/wiki/Luce_visibile" class="mw-redirect" title="Luce visibile">Luce visibile</a> </td> <td>Tra 760 e 380 nm </td></tr> <tr> <td><a href="/wiki/Radiazione_ultravioletta" title="Radiazione ultravioletta">Luce ultravioletta</a> </td> <td>Tra 380 nm e 10<sup>−8</sup> m </td></tr> <tr> <td><a href="/wiki/Raggi_X" title="Raggi X">Raggi X</a> </td> <td>Tra 10<sup>−8</sup> e 10<sup>−10</sup> m </td></tr> <tr> <td><a href="/wiki/Raggi_gamma" title="Raggi gamma">Raggi gamma</a> e <a href="/wiki/Raggi_cosmici" title="Raggi cosmici">raggi cosmici</a> </td> <td>Al di sotto di 10<sup>−10</sup> m </td></tr></tbody></table> <p>L'assorbimento di energia da parte della materia può causare un aumento locale di <a href="/wiki/Temperatura" title="Temperatura">temperatura</a>, cosa che viene sfruttata nel caso del riscaldamento dei <a href="/wiki/Pannello_solare_termico" title="Pannello solare termico">pannelli solari</a> da parte della <a href="/wiki/Luce" title="Luce">luce</a> del <a href="/wiki/Sole" title="Sole">Sole</a>. Se l'energia della radiazione incidente sulla materia è sufficiente a <a href="/wiki/Ione" title="Ione">ionizzarne</a> gli atomi, la radiazione si chiama <a href="/wiki/Radiazioni_ionizzanti" title="Radiazioni ionizzanti">ionizzante</a>. </p><p>Se la radiazione ionizzante investe un tessuto biologico può creare danni biologici, agendo sul <a href="/wiki/DNA" title="DNA">DNA</a> e impedendogli di riprodursi in modo corretto. La cessione di energia all'uomo da parte delle radiazioni ionizzanti avviene attraverso irradiazione esterna o interna. Si parla di esposizione o irradiazione esterna quando la fonte di radiazioni è all'esterno del corpo umano. Si ha esposizione interna quando la sorgente di radiazione è introdotta nel <a href="/wiki/Anatomia_umana" title="Anatomia umana">corpo umano</a>, ciò che successe ad <a href="/wiki/Alexander_Litvinenko" class="mw-redirect" title="Alexander Litvinenko">Alexander Litvinenko</a> il quale, pur ucciso da avvelenamento chimico con <a href="/wiki/Polonio" title="Polonio">polonio</a>, ne subì il notevole irraggiamento. </p><p>Una fonte di radiazioni ionizzanti deriva dall'instabilità atomica e/o nucleare di alcuni elementi. Gli elementi presenti in natura che hanno questa instabilità sono rintracciabili facilmente sulla <i><a href="/wiki/Tavola_periodica" class="mw-redirect" title="Tavola periodica">tavola periodica</a> degli elementi</i>, ed in particolare sono tutti gli elementi che hanno <a href="/wiki/Numero_atomico" title="Numero atomico">numero atomico</a> (Z) uguale o superiore a 84, ovvero a partire dal <a href="/wiki/Polonio" title="Polonio">polonio</a>. Vi sono poi <a href="/wiki/Isotopi" class="mw-redirect" title="Isotopi">isotopi</a> di altri elementi anche con numero atomico inferiore che sono radioattivi e sono prodotti dall'uomo, il caso più comune è il <sup>60</sup>Co prodotto dal <sup>59</sup>Co nei reattori nucleari per aggiunta di un <a href="/wiki/Neutrone" title="Neutrone">neutrone</a>. Il <sup>60</sup>Co, con un <a href="/wiki/Decadimento_beta" title="Decadimento beta">decadimento beta</a> si trasforma in <sup>60</sup>Ni ed emette due fotoni di energia 1,17 e 1,33 MeV che vengono utilizzati in svariati campi quali ad esempio quello militare (bomba al cobalto) o industriale (trattamenti di alimenti, di materiali, sterilizzazioni...). </p><p>In genere, la trasformazione di tali elementi in altri elementi più stabili avviene attraverso l'emissione di <a href="/wiki/Particella_%CE%B1" title="Particella α">raggi α</a> o <a href="/wiki/Particella_%CE%B2" title="Particella β">β</a> accompagnati inoltre dall'emissione di <a href="/wiki/Raggi_gamma" title="Raggi gamma">raggi γ</a>. Gli elementi che presentano tali caratteristiche sono detti elementi radioattivi ed il processo di emissione di radiazioni è detto <a href="/wiki/Decadimento_radioattivo" class="mw-redirect" title="Decadimento radioattivo">decadimento radioattivo</a>. </p> <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=Radiazione&veaction=edit&section=2" 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=Radiazione&action=edit&section=2" 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/Radioattivit%C3%A0" title="Radioattività">Radioattività</a></li> <li><a href="/wiki/Radiazione_di_sincrotrone" title="Radiazione di sincrotrone">Radiazione di sincrotrone</a></li> <li><a href="/wiki/Radiazione_elettromagnetica" title="Radiazione elettromagnetica">Radiazione elettromagnetica</a></li> <li><a href="/wiki/Radiazioni_ionizzanti" title="Radiazioni ionizzanti">Radiazioni ionizzanti</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Altri_progetti">Altri progetti</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Radiazione&veaction=edit&section=3" title="Modifica la sezione Altri progetti" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Radiazione&action=edit&section=3" title="Edit section's source code: Altri progetti"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div id="interProject" class="toccolours" style="display: none; clear: both; margin-top: 2em"><p id="sisterProjects" style="background-color: #efefef; color: black; font-weight: bold; margin: 0"><span>Altri progetti</span></p><ul title="Collegamenti verso gli altri progetti Wikimedia"> <li class="" title=""><a href="https://it.wiktionary.org/wiki/radiazione" class="extiw" title="wikt:radiazione">Wikizionario</a></li> <li class="" title=""><span class="plainlinks" title="commons:Category:Radiation"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Radiation?uselang=it">Wikimedia Commons</a></span></li></ul></div> <ul><li><span typeof="mw:File"><a href="https://it.wiktionary.org/wiki/" title="Collabora a Wikizionario"><img alt="Collabora a Wikizionario" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wiktionary_small.svg/18px-Wiktionary_small.svg.png" decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wiktionary_small.svg/27px-Wiktionary_small.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wiktionary_small.svg/36px-Wiktionary_small.svg.png 2x" data-file-width="350" data-file-height="350" /></a></span> <a href="https://it.wiktionary.org/wiki/" class="extiw" title="wikt:">Wikizionario</a> contiene il lemma di dizionario «<b><a href="https://it.wiktionary.org/wiki/radiazione" class="extiw" title="wikt:radiazione">radiazione</a></b>»</li> <li><span typeof="mw:File"><a href="https://commons.wikimedia.org/wiki/?uselang=it" title="Collabora a Wikimedia Commons"><img alt="Collabora a Wikimedia Commons" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png" decoding="async" width="18" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/27px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/36px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> <span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/?uselang=it">Wikimedia Commons</a></span> contiene immagini o altri file sulla <b><span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Radiation?uselang=it">radiazione</a></span></b></li></ul> <div class="mw-heading mw-heading2"><h2 id="Collegamenti_esterni">Collegamenti esterni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Radiazione&veaction=edit&section=4" title="Modifica la sezione Collegamenti esterni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Radiazione&action=edit&section=4" title="Edit section's source code: Collegamenti esterni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li class="mw-empty-elt"></li> <li><cite id="CITEREFTreccani.it" class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="https://www.treccani.it/enciclopedia/radiazione"><span style="font-style:italic;">radiazione</span></a>, su <span style="font-style:italic;">Treccani.it – Enciclopedie on line</span>, <a href="/wiki/Istituto_dell%27Enciclopedia_Italiana" title="Istituto dell'Enciclopedia Italiana">Istituto dell'Enciclopedia Italiana</a>.</cite> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q18335#P3365" title="Modifica su Wikidata"><img alt="Modifica su Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/10px-Blue_pencil.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/15px-Blue_pencil.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/20px-Blue_pencil.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></li> <li><cite id="CITEREFBritannica.com" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) Myron Luntz, Asokendu Mozumder, Arthur Canfield Upton, Joseph Silverman, Milton Burton e Cornelius A. Tobias, <a rel="nofollow" class="external text" href="https://www.britannica.com/science/radiation"><span style="font-style:italic;">radiation</span></a>, su <span style="font-style:italic;"><a href="/wiki/Enciclopedia_Britannica" title="Enciclopedia Britannica">Enciclopedia Britannica</a></span>, Encyclopædia Britannica, Inc.</cite> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q18335#P1417" title="Modifica su Wikidata"><img alt="Modifica su Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/10px-Blue_pencil.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/15px-Blue_pencil.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/20px-Blue_pencil.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></li> <li><cite id="CITEREFEncyclopedia_of_Science_Fiction" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://www.sf-encyclopedia.com/entry/radiation"><span style="font-style:italic;">Radiazione</span></a>, su <span style="font-style:italic;"><a href="/wiki/The_Encyclopedia_of_Science_Fiction" title="The Encyclopedia of Science Fiction">The Encyclopedia of Science Fiction</a></span>.</cite> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q18335#P5357" title="Modifica su Wikidata"><img alt="Modifica su Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/10px-Blue_pencil.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/15px-Blue_pencil.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/20px-Blue_pencil.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></li></ul> <style data-mw-deduplicate="TemplateStyles:r140554510">.mw-parser-output .CdA{border:1px solid #aaa;width:100%;margin:auto;font-size:90%;padding:2px}.mw-parser-output .CdA th{background-color:#f2f2f2;font-weight:bold;width:20%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .CdA{border-color:#54595D}html.skin-theme-clientpref-night .mw-parser-output .CdA th{background-color:#202122}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .CdA{border-color:#54595D}html.skin-theme-clientpref-os .mw-parser-output .CdA th{background-color:#202122}}</style><table class="CdA"><tbody><tr><th><a href="/wiki/Aiuto:Controllo_di_autorit%C3%A0" title="Aiuto:Controllo di autorità">Controllo di autorità</a></th><td><a href="/wiki/Nuovo_soggettario" title="Nuovo soggettario">Thesaurus BNCF</a> <span class="uid"><a rel="nofollow" class="external text" href="https://thes.bncf.firenze.sbn.it/termine.php?id=5543">5543</a></span><span style="font-weight:bold;"> ·</span> <a href="/wiki/Library_of_Congress_Control_Number" title="Library of Congress Control Number">LCCN</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://id.loc.gov/authorities/subjects/sh85110340">sh85110340</a></span><span style="font-weight:bold;"> ·</span> <a href="/wiki/Gemeinsame_Normdatei" title="Gemeinsame Normdatei">GND</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="tedesco">DE</abbr></span>) <a rel="nofollow" class="external text" href="https://d-nb.info/gnd/4057849-5">4057849-5</a></span><span style="font-weight:bold;"> ·</span> <a href="/wiki/Biblioteca_nazionale_di_Israele" title="Biblioteca nazionale di Israele">J9U</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr>, <abbr title="ebraico">HE</abbr></span>) <a rel="nofollow" class="external text" href="https://www.nli.org.il/en/authorities/987007555984405171">987007555984405171</a></span><span style="font-weight:bold;"> ·</span> <a href="/wiki/Biblioteca_della_Dieta_nazionale_del_Giappone" title="Biblioteca della Dieta nazionale del Giappone">NDL</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr>, <abbr title="giapponese">JA</abbr></span>) <a rel="nofollow" class="external text" href="https://id.ndl.go.jp/auth/ndlna/00563646">00563646</a></span></td></tr></tbody></table> <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:Bar_magnet.jpg" class="mw-file-description" title="Elettromagnetismo"><img alt=" " src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Bar_magnet.jpg/25px-Bar_magnet.jpg" decoding="async" width="25" height="19" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Bar_magnet.jpg/38px-Bar_magnet.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Bar_magnet.jpg/50px-Bar_magnet.jpg 2x" data-file-width="2048" data-file-height="1536" /></a></span> <b><a href="/wiki/Portale:Elettromagnetismo" title="Portale:Elettromagnetismo">Portale Elettromagnetismo</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:Nuvola_apps_katomic.svg" class="mw-file-description" title="Fisica"><img alt=" " src="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/Nuvola_apps_katomic.svg/25px-Nuvola_apps_katomic.svg.png" decoding="async" width="25" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/Nuvola_apps_katomic.svg/38px-Nuvola_apps_katomic.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/55/Nuvola_apps_katomic.svg/50px-Nuvola_apps_katomic.svg.png 2x" data-file-width="128" data-file-height="128" /></a></span> <b><a href="/wiki/Portale:Fisica" title="Portale:Fisica">Portale Fisica</a></b></div></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; 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