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vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">sposta nella barra laterale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">nascondi</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Inizio</div> </a> </li> <li id="toc-Il_16:9" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Il_16:9"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Il 16:9</span> </div> </a> <ul id="toc-Il_16:9-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Risoluzioni_più_comuni" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Risoluzioni_più_comuni"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Risoluzioni più comuni</span> </div> </a> <ul id="toc-Risoluzioni_più_comuni-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Storia_e_origine_del_16:9" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Storia_e_origine_del_16:9"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Storia e origine del 16:9</span> </div> </a> <button aria-controls="toc-Storia_e_origine_del_16:9-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Attiva/disattiva la sottosezione Storia e origine del 16:9</span> </button> <ul id="toc-Storia_e_origine_del_16:9-sublist" class="vector-toc-list"> <li id="toc-Il_16:9_in_Europa" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Il_16:9_in_Europa"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>Il 16:9 in Europa</span> </div> </a> <ul id="toc-Il_16:9_in_Europa-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Dimensione_equivalente_dei_formati" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Dimensione_equivalente_dei_formati"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Dimensione equivalente dei formati</span> </div> </a> <ul id="toc-Dimensione_equivalente_dei_formati-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Calcolo_delle_dimensioni" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Calcolo_delle_dimensioni"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Calcolo delle dimensioni</span> </div> </a> <ul id="toc-Calcolo_delle_dimensioni-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Note" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Note"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Note</span> </div> </a> <ul id="toc-Note-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Voci_correlate" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Voci_correlate"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Voci correlate</span> </div> </a> <ul id="toc-Voci_correlate-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Altri_progetti" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Altri_progetti"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Altri progetti</span> </div> </a> <ul id="toc-Altri_progetti-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Collegamenti_esterni" class="vector-toc-list-item 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">9</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">16:9</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 31 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-31" 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">31 lingue</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/16:9" title="16:9 - arabo" lang="ar" hreflang="ar" data-title="16:9" data-language-autonym="العربية" data-language-local-name="arabo" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/16:9" title="16:9 - azerbaigiano" lang="az" hreflang="az" data-title="16:9" 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/16:9" title="16:9 - bielorusso" lang="be" hreflang="be" data-title="16:9" data-language-autonym="Беларуская" data-language-local-name="bielorusso" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/16:9" title="16:9 - catalano" lang="ca" hreflang="ca" data-title="16:9" 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/16_:_9" title="16 : 9 - ceco" lang="cs" hreflang="cs" data-title="16 : 9" data-language-autonym="Čeština" data-language-local-name="ceco" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/16:9" title="16:9 - tedesco" lang="de" hreflang="de" data-title="16:9" 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/16:9" title="16:9 - greco" lang="el" hreflang="el" data-title="16:9" 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/16:9_aspect_ratio" title="16:9 aspect ratio - inglese" lang="en" hreflang="en" data-title="16:9 aspect ratio" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%86%D8%B3%D8%A8%D8%AA_%D8%AA%D8%B5%D9%88%DB%8C%D8%B1_%DB%B1%DB%B6:%DB%B9" title="نسبت تصویر ۱۶:۹ - persiano" lang="fa" hreflang="fa" data-title="نسبت تصویر ۱۶:۹" data-language-autonym="فارسی" data-language-local-name="persiano" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Format_16/9" title="Format 16/9 - francese" lang="fr" hreflang="fr" data-title="Format 16/9" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/16:9" title="16:9 - croato" lang="hr" hreflang="hr" data-title="16:9" data-language-autonym="Hrvatski" data-language-local-name="croato" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/16:9" title="16:9 - indonesiano" lang="id" hreflang="id" data-title="16:9" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiano" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/16:9%E3%81%AE%E3%82%A2%E3%82%B9%E3%83%9A%E3%82%AF%E3%83%88%E6%AF%94" title="16:9のアスペクト比 - giapponese" lang="ja" hreflang="ja" data-title="16:9のアスペクト比" 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-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/16:9" title="16:9 - coreano" lang="ko" hreflang="ko" data-title="16:9" 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/16:9" title="16:9 - latino" lang="la" hreflang="la" data-title="16:9" data-language-autonym="Latina" data-language-local-name="latino" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/16:9" title="16:9 - lituano" lang="lt" hreflang="lt" data-title="16:9" 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/16:9" title="16:9 - lettone" lang="lv" hreflang="lv" data-title="16:9" data-language-autonym="Latviešu" data-language-local-name="lettone" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/16:9" title="16:9 - malese" lang="ms" hreflang="ms" data-title="16:9" 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-nap mw-list-item"><a href="https://nap.wikipedia.org/wiki/16:9" title="16:9 - napoletano" lang="nap" hreflang="nap" data-title="16:9" data-language-autonym="Napulitano" data-language-local-name="napoletano" 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/16:9" title="16:9 - olandese" lang="nl" hreflang="nl" data-title="16:9" data-language-autonym="Nederlands" data-language-local-name="olandese" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/16:9" title="16:9 - rumeno" lang="ro" hreflang="ro" data-title="16:9" data-language-autonym="Română" data-language-local-name="rumeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru badge-Q70894304 mw-list-item" title=""><a href="https://ru.wikipedia.org/wiki/16:9" title="16:9 - russo" lang="ru" hreflang="ru" data-title="16:9" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/16:9" title="16:9 - Simple English" lang="en-simple" hreflang="en-simple" data-title="16:9" 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/16:9" title="16:9 - slovacco" lang="sk" hreflang="sk" data-title="16:9" data-language-autonym="Slovenčina" data-language-local-name="slovacco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/16:9" title="16:9 - albanese" lang="sq" hreflang="sq" data-title="16:9" data-language-autonym="Shqip" data-language-local-name="albanese" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/16:9" title="16:9 - svedese" lang="sv" hreflang="sv" data-title="16:9" data-language-autonym="Svenska" data-language-local-name="svedese" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/16:9" title="16:9 - tagico" lang="tg" hreflang="tg" data-title="16:9" data-language-autonym="Тоҷикӣ" data-language-local-name="tagico" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/16:9" title="16:9 - turco" lang="tr" hreflang="tr" data-title="16:9" 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/16:9" title="16:9 - ucraino" lang="uk" hreflang="uk" data-title="16:9" data-language-autonym="Українська" data-language-local-name="ucraino" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/16:9" title="16:9 - uzbeco" lang="uz" hreflang="uz" data-title="16:9" 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/T%E1%BB%B7_l%E1%BB%87_khung_h%C3%ACnh_16:9" title="Tỷ lệ khung hình 16:9 - vietnamita" lang="vi" hreflang="vi" data-title="Tỷ lệ khung hình 16:9" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q1383069#sitelinks-wikipedia" title="Modifica collegamenti interlinguistici" class="wbc-editpage">Modifica collegamenti</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespace"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div 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Segui i suggerimenti del <a href="/wiki/Progetto:Televisione" title="Progetto:Televisione">progetto di riferimento</a>.</div> </div> </div> </div> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r133964453"><div style="" class="ambox metadata plainlinks avviso avviso-contenuto"> <div class="avviso-immagine mbox-image noprint"><span typeof="mw:File"><a href="/wiki/File:Question_book-4.svg" class="mw-file-description" title="Niente fonti!"><img alt="Niente fonti!" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/64/Question_book-4.svg/45px-Question_book-4.svg.png" decoding="async" width="45" height="35" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/64/Question_book-4.svg/68px-Question_book-4.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/64/Question_book-4.svg/90px-Question_book-4.svg.png 2x" data-file-width="262" data-file-height="204" /></a></span></div> <div class="avviso-testo mbox-text"> <div class="mbox-text-div"><b>Questa voce o sezione  sull'argomento tecnica cinematografica <a href="/wiki/Wikipedia:Uso_delle_fonti" title="Wikipedia:Uso delle fonti">non cita le fonti necessarie</a> o quelle presenti sono insufficienti</b>. <div class="hide-when-compact"> <div class="noprint"><hr />Puoi <a class="external text" href="https://it.wikipedia.org/w/index.php?title=16:9&action=edit">migliorare questa voce</a> aggiungendo citazioni da <a href="/wiki/Wikipedia:Fonti_attendibili" title="Wikipedia:Fonti attendibili">fonti attendibili</a> secondo le <a href="/wiki/Wikipedia:Uso_delle_fonti" title="Wikipedia:Uso delle fonti">linee guida sull'uso delle fonti</a>. </div> </div> </div> </div> </div> <p>Il <b>16:9</b> (o <b>1,78:1</b>) è un <a href="/wiki/Rapporto_d%27aspetto" title="Rapporto d'aspetto">rapporto d'aspetto</a> <a href="/wiki/Widescreen" title="Widescreen">widescreen</a> adottato come <a href="/wiki/Norma_tecnica" title="Norma tecnica">standard</a> per la <a href="/wiki/Televisione_analogica" title="Televisione analogica">televisione analogica</a> e <a href="/wiki/HDTV" title="HDTV">in alta definizione</a> negli <a href="/wiki/Stati_Uniti_d%27America" title="Stati Uniti d'America">Stati Uniti d'America</a>, in <a href="/wiki/Europa" title="Europa">Europa</a> e in <a href="/wiki/Giappone" title="Giappone">Giappone</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Il_16:9">Il 16:9</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=16:9&veaction=edit&section=1" title="Modifica la sezione Il 16:9" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=16:9&action=edit&section=1" title="Edit section's source code: Il 16:9"><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:AspectRatioSet_comparison.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c1/AspectRatioSet_comparison.png/290px-AspectRatioSet_comparison.png" decoding="async" width="290" height="163" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c1/AspectRatioSet_comparison.png/435px-AspectRatioSet_comparison.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c1/AspectRatioSet_comparison.png/580px-AspectRatioSet_comparison.png 2x" data-file-width="653" data-file-height="366" /></a><figcaption>Un'immagine in formato 16:9. Le aree scure indicano la parte che non sarebbe visibile se fosse ripresa con la stessa altezza ma in formato 4:3.</figcaption></figure> <p>La <i>proporzione 16:9</i> è alla base di tutti i formati ad alta definizione (<a href="/wiki/HDTV" title="HDTV">HDTV</a>), ma è di diffusione sempre maggiore anche nella televisione standard (<a href="/wiki/SDTV" title="SDTV">SDTV</a>). </p><p>Il 16:9 corrisponde ad un formato più largo del classico <a href="/wiki/Rapporto_d%27aspetto" title="Rapporto d'aspetto">4:3</a>, estendendo del 33% la superficie rispetto a quest'ultimo, a parità di altezza di schermo. Il 16:9 è uno dei formati che più si avvicinano alla psicovisione umana, in quanto, nonostante il campo visivo umano sia quasi perfettamente 4:3 (<a href="/wiki/Occhio" title="Occhio">155°h per 120°v</a>), l'elaborazione delle informazioni ottiche, per fattori evolutivi (ad es. la permanenza sul terreno o l'assenza di predatori volanti) e fisiologici (ad es. l'altezza media o la disposizione degli occhi), focalizza l'attenzione molto più orizzontalmente che verticalmente. </p> <div style="clear:both;"></div> <table align="center"> <tbody><tr> <td><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Aspect_ratio_4_3_example.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/Aspect_ratio_4_3_example.jpg/290px-Aspect_ratio_4_3_example.jpg" decoding="async" width="290" height="217" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/4/43/Aspect_ratio_4_3_example.jpg 1.5x" data-file-width="374" data-file-height="280" /></a><figcaption>Immagine in 4:3 (1,33:1)</figcaption></figure></td> <td><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Aspect_ratio_16_9_example.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7c/Aspect_ratio_16_9_example.jpg/390px-Aspect_ratio_16_9_example.jpg" decoding="async" width="390" height="218" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/7/7c/Aspect_ratio_16_9_example.jpg 1.5x" data-file-width="500" data-file-height="280" /></a><figcaption>Immagine in 16:9 (1,78:1).</figcaption></figure> </td></tr></tbody></table> <p>Le due immagini sopra offrono una comparazione tra i formati 4:3 e 16:9. In questo caso l'immagine in 16:9 trae beneficio dalla maggiore area a disposizione. Si notino in particolare gli oggetti a sinistra del lampione e le sedie con i tavoli a destra, non visualizzati nella versione 4:3. Le due immagini sono mostrate in modo che le rispettive aree siano equivalenti. Comparare due formati sulla base delle dimensioni orizzontali o verticali, infatti, può dare una falsa impressione di superiorità di uno rispetto all'altro. </p> <table align="center"> <tbody><tr> <td valign="top" align="center"><figure typeof="mw:File/Thumb"><a href="/wiki/File:AspectRatioSet_16-9.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2d/AspectRatioSet_16-9.png/385px-AspectRatioSet_16-9.png" decoding="async" width="385" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2d/AspectRatioSet_16-9.png/578px-AspectRatioSet_16-9.png 1.5x, //upload.wikimedia.org/wikipedia/commons/2/2d/AspectRatioSet_16-9.png 2x" data-file-width="742" data-file-height="424" /></a><figcaption>Un'immagine 16:9 rappresentata all'interno di un televisore 16:9.</figcaption></figure> </td> <td valign="top"><figure class="mw-halign-center" typeof="mw:File/Thumb"><a href="/wiki/File:AspectRatioSet_16-9_letterbox.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dd/AspectRatioSet_16-9_letterbox.png/302px-AspectRatioSet_16-9_letterbox.png" decoding="async" width="302" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dd/AspectRatioSet_16-9_letterbox.png/452px-AspectRatioSet_16-9_letterbox.png 1.5x, //upload.wikimedia.org/wikipedia/commons/d/dd/AspectRatioSet_16-9_letterbox.png 2x" data-file-width="581" data-file-height="424" /></a><figcaption>Un'immagine 16:9 rappresentata all'interno di un televisore 4:3. L'immagine viene rimpicciolita in modo da entrare all'interno del 4:3; così facendo, si formano due barre vuote al di sopra e al di sotto dell'immagine. Questo è l'effetto <i><a href="/wiki/Letterbox" title="Letterbox">letterbox</a></i>.</figcaption></figure> </td></tr> <tr> <td valign="top"><figure class="mw-halign-center" typeof="mw:File/Thumb"><a href="/wiki/File:AspectRatioSet_4-3.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/26/AspectRatioSet_4-3.png/302px-AspectRatioSet_4-3.png" decoding="async" width="302" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/26/AspectRatioSet_4-3.png/452px-AspectRatioSet_4-3.png 1.5x, //upload.wikimedia.org/wikipedia/commons/2/26/AspectRatioSet_4-3.png 2x" data-file-width="581" data-file-height="424" /></a><figcaption>Un'immagine 16:9 rappresentata all'interno di un televisore 4:3. L'immagine è stata tagliata ai lati; parte dell'immagine originale è quindi persa. Questa tecnica, oggi sempre meno utilizzata, è detta <i><a href="/wiki/Pan_and_scan" title="Pan and scan">Pan and scan</a></i>.</figcaption></figure> </td> <td valign="top"><figure class="mw-halign-center" typeof="mw:File/Thumb"><a href="/wiki/File:AspectRatioSet_16-9_squeezed.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/45/AspectRatioSet_16-9_squeezed.png/302px-AspectRatioSet_16-9_squeezed.png" decoding="async" width="302" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/45/AspectRatioSet_16-9_squeezed.png/452px-AspectRatioSet_16-9_squeezed.png 1.5x, //upload.wikimedia.org/wikipedia/commons/4/45/AspectRatioSet_16-9_squeezed.png 2x" data-file-width="581" data-file-height="424" /></a><figcaption>Un'immagine 16:9 rappresentata all'interno di un televisore 4:3. In questo caso l'immagine non ha subìto trattamenti; viene quindi visualizzata schiacciata orizzontalmente.</figcaption></figure> </td></tr> <tr> <td valign="top"><figure typeof="mw:File/Thumb"><a href="/wiki/File:AspectRatioSet_4-3_letterbox_stretched.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fc/AspectRatioSet_4-3_letterbox_stretched.png/385px-AspectRatioSet_4-3_letterbox_stretched.png" decoding="async" width="385" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fc/AspectRatioSet_4-3_letterbox_stretched.png/578px-AspectRatioSet_4-3_letterbox_stretched.png 1.5x, //upload.wikimedia.org/wikipedia/commons/f/fc/AspectRatioSet_4-3_letterbox_stretched.png 2x" data-file-width="742" data-file-height="424" /></a><figcaption>Un'immagine originariamente 16:9 ma adattata in fase di trasmissione per schermi 4:3 con il metodo del <i>letterbox</i>, apparirà allungata orizzontalmente su un televisore 16:9.</figcaption></figure> </td> <td valign="top"><figure typeof="mw:File/Thumb"><a href="/wiki/File:AspectRatioSet_16-9_zoomed.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a8/AspectRatioSet_16-9_zoomed.png/385px-AspectRatioSet_16-9_zoomed.png" decoding="async" width="385" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a8/AspectRatioSet_16-9_zoomed.png/578px-AspectRatioSet_16-9_zoomed.png 1.5x, //upload.wikimedia.org/wikipedia/commons/a/a8/AspectRatioSet_16-9_zoomed.png 2x" data-file-width="742" data-file-height="424" /></a><figcaption>Molti televisori 16:9 dispongono di una funzione, solitamente denominata «zoom», che allunga verticalmente l'immagine in modo da rimuovere i bordi neri causati dalla trasmissione in <i>letterbox</i>. In questo modo si ottiene un'immagine con proporzioni corrette ma di qualità inferiore, a causa dell'ingrandimento.</figcaption></figure> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Risoluzioni_più_comuni"><span id="Risoluzioni_pi.C3.B9_comuni"></span>Risoluzioni più comuni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=16:9&veaction=edit&section=2" title="Modifica la sezione Risoluzioni più comuni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=16:9&action=edit&section=2" title="Edit section's source code: Risoluzioni più comuni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Alcune delle risoluzioni più comuni per 16:9 sono elencate nella tabella sottostante: </p> <table class="wikitable sortable"> <tbody><tr> <th>Larghezza </th> <th>Altezza </th> <th>Standard </th></tr> <tr> <td>256 </td> <td>144 </td> <td> </td></tr> <tr> <td>426 </td> <td>240 </td> <td> </td></tr> <tr> <td>640 </td> <td>360 </td> <td>nHD </td></tr> <tr> <td>768 </td> <td>432 </td> <td> </td></tr> <tr> <td>800 </td> <td>450 </td> <td> </td></tr> <tr> <td>848 </td> <td>480 </td> <td> </td></tr> <tr> <td>854 </td> <td>480 </td> <td>FWVGA </td></tr> <tr> <td>960 </td> <td>540 </td> <td>qHD </td></tr> <tr> <td>1024 </td> <td>576 </td> <td> </td></tr> <tr> <td>1280 </td> <td>720 </td> <td>HD </td></tr> <tr> <td>1366 </td> <td>768 </td> <td>WXGA </td></tr> <tr> <td>1600 </td> <td>900 </td> <td>HD+ </td></tr> <tr> <td>1920 </td> <td>1080 </td> <td><a href="/wiki/1080p" title="1080p">Full HD</a> </td></tr> <tr> <td>2048 </td> <td>1152 </td> <td> </td></tr> <tr> <td>2560 </td> <td>1440 </td> <td>QHD </td></tr> <tr> <td>2880 </td> <td>1620 </td> <td> </td></tr> <tr> <td>3200 </td> <td>1800 </td> <td>QHD+ </td></tr> <tr> <td>3840 </td> <td>2160 </td> <td><a href="/wiki/4K" title="4K">4K</a> <a href="/wiki/Televisione_a_ultra_alta_definizione" class="mw-redirect" title="Televisione a ultra alta definizione">UHD</a> </td></tr> <tr> <td>4096 </td> <td>2304 </td> <td> </td></tr> <tr> <td>5120 </td> <td>2880 </td> <td><a href="/wiki/5K" title="5K">5K</a> </td></tr> <tr> <td>7680 </td> <td>4320 </td> <td><a href="/wiki/8K" title="8K">8K</a> <a href="/wiki/Televisione_a_ultra_alta_definizione" class="mw-redirect" title="Televisione a ultra alta definizione">UHD</a> </td></tr> <tr> <td>15360 </td> <td>8640 </td> <td><a href="/wiki/16K" title="16K">16K</a> <a href="/wiki/Televisione_a_ultra_alta_definizione" class="mw-redirect" title="Televisione a ultra alta definizione">UHD</a> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Storia_e_origine_del_16:9">Storia e origine del 16:9</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=16:9&veaction=edit&section=3" title="Modifica la sezione Storia e origine del 16:9" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=16:9&action=edit&section=3" title="Edit section's source code: Storia e origine del 16:9"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Il 16:9 nasce agli inizi degli <a href="/wiki/Anni_1980" title="Anni 1980">anni ottanta</a>, ad opera di <a href="/wiki/Kerns_Powers" title="Kerns Powers">Kerns Powers</a>, della <a href="/wiki/Society_of_Motion_Picture_and_Television_Engineers" title="Society of Motion Picture and Television Engineers">SMPTE</a>, il cui scopo è realizzare un formato proprio dell'<a href="/wiki/HDTV" title="HDTV">alta definizione</a> il quale possa essere "contenitore" di tutti gli altri <a href="/wiki/Formati_cinematografici" title="Formati cinematografici">formati cinematografici</a>, dal 4:3 al 2,35:1. </p> <figure class="mw-default-size mw-halign-center" typeof="mw:File/Thumb"><a href="/wiki/File:Kerns_powers_16x9.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/Kerns_powers_16x9.jpg/640px-Kerns_powers_16x9.jpg" decoding="async" width="640" height="360" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/Kerns_powers_16x9.jpg/960px-Kerns_powers_16x9.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/7/76/Kerns_powers_16x9.jpg 2x" data-file-width="1024" data-file-height="576" /></a><figcaption>Progetto di <a href="/wiki/Kerns_Powers" title="Kerns Powers">Kerns H. Powers</a> per il 16:9</figcaption></figure> <p>Con uno schizzo di matita su un foglio di carta sono delineati i vari formati e cercato di stabilire il formato "centrale" o "contenitore". Ne risulta il 16:9. </p> <div class="mw-heading mw-heading3"><h3 id="Il_16:9_in_Europa">Il 16:9 in Europa</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=16:9&veaction=edit&section=4" title="Modifica la sezione Il 16:9 in Europa" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=16:9&action=edit&section=4" title="Edit section's source code: Il 16:9 in Europa"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>L'<a href="/wiki/Unione_europea" title="Unione europea">Unione europea</a> sostiene da sempre il formato 16:9, dapprima con la creazione di un sistema <a href="/wiki/HDTV" title="HDTV">HDTV</a> europeo da contrastare a quello inventato agli inizi degli anni '70 dalla <a href="/wiki/NHK" title="NHK">NHK</a> (il quale prevede una risoluzione a 1125 linee, scansione 60 Hz interlacciata e, inizialmente, un'<i>aspect ratio</i> 5:3, o 1,66:1 - 1125/60i/5:3) e ulteriormente migliorata dalla SMPTE con minore banda e <i>aspect ratio</i> 16:9, o 5,33:3 (1125/60i/16:9), denominato MUSE. </p><p>Il formato europeo per l'<a href="/wiki/Alta_definizione" class="mw-redirect" title="Alta definizione">alta definizione</a> ha una risoluzione a 1250 linee, scansione interlacciata a 50 Hz e proporzioni di 16:9 (1250/50i/16:9). </p><p>I due sistemi HDTV sono entrambi utilizzati in occasione dei <a href="/wiki/Campionato_mondiale_di_calcio_1990" title="Campionato mondiale di calcio 1990">mondiali di calcio del 1990</a> in Italia e trasmessi attraverso il satellite <a href="/w/index.php?title=Olympus_(satellite)&action=edit&redlink=1" class="new" title="Olympus (satellite) (la pagina non esiste)">Olympus</a> a 8 diversi teatri italiani e in <a href="/wiki/Spagna" title="Spagna">Spagna</a>. I <a href="/wiki/Giochi_della_XXV_Olimpiade" title="Giochi della XXV Olimpiade">Giochi della XXV Olimpiade</a> di <a href="/wiki/Barcellona" title="Barcellona">Barcellona</a> e i <a href="/wiki/XVI_Giochi_olimpici_invernali" title="XVI Giochi olimpici invernali">XVI Giochi olimpici invernali</a> di <a href="/wiki/Albertville_(Francia)" title="Albertville (Francia)">Albertville</a> nel <a href="/wiki/1992" title="1992">1992</a> vedono lo sviluppo dell'HDTV europea nella diffusione di contenuti a livello mondiale. </p><p>Per aumentare la diffusione del 16:9 e dell'alta definizione in Europa, l'<a href="/wiki/Unione_europea" title="Unione europea">UE</a>, avvia, con una direttiva, il <a rel="nofollow" class="external text" href="https://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31993D0424:EN:HTML">16:9 Action Plan</a>, un piano d'azione per lo sviluppo del formato panoramico, con un investimento di 405 milioni di <a href="/wiki/Unit%C3%A0_di_conto_europea" title="Unità di conto europea">ECU</a> dal 1993 al 1997. In Italia, i beneficiari sono la <a href="/wiki/Rai" title="Rai">Rai</a>, <a href="/wiki/TELE%2B" title="TELE+">TELE+</a> (dal <a href="/wiki/2003" title="2003">2003</a> <a href="/wiki/Sky_Italia" title="Sky Italia">Sky Italia</a>), il gruppo <a href="/wiki/Cecchi_Gori" class="mw-redirect" title="Cecchi Gori">Cecchi Gori</a> e varie emittenti private. La <a href="/wiki/Mediaset" title="Mediaset">Mediaset</a>, pensando a proporre quello che per lei è definito "di qualità sociale", rinuncia a ricevere i fondi del piano. </p><p>Le problematiche relative all'<a href="/wiki/Alta_definizione" class="mw-redirect" title="Alta definizione">alta definizione</a> in Europa e altrove sono la complessità dei mezzi di comunicazione e i costi esorbitanti del progetto, unito alla difficoltà di relativa penetrazione nel mercato. Il progetto HDTV verrà poi abbandonato per poi lasciare spazio al progetto statunitense proposto dal consorzio <a href="/wiki/ATSC" title="ATSC">ATSC</a>. </p><p>Nel <a href="/wiki/2006" title="2006">2006</a> iniziano a ritmo pieno in tutta Europa trasmissioni in <a href="/wiki/HDTV" title="HDTV">HDTV</a> (1080/50i/16:9). Il primo canale europeo in HD nasce nel <a href="/wiki/2004" title="2004">2004</a> con il nome di <a href="/wiki/Euro1080" title="Euro1080">Euro1080</a>, da cui avviene, nel corso del <a href="/wiki/2005" title="2005">2005</a>, la scissione in tre canali diversi: <a rel="nofollow" class="external text" href="http://www.hd-1.tv">HD1</a>, HD2 e HD5. L'HDTV ha come formato standard di immagine il 16:9. Rispetto al sistema a definizione standard che, secondo le specifiche europee <a href="/wiki/PAL_(televisione)" title="PAL (televisione)">PAL</a>, ha una risoluzione verticale di 576 <a href="/wiki/Pixel" title="Pixel">pixel</a>, l'HDTV detiene, secondo le due specifiche, una risoluzione minima di 720 pixel e una massima di 1080 pixel. In Italia, L'HDTV è distribuita, per ora, da <a href="/wiki/Sky_Italia" title="Sky Italia">Sky Italia</a>, tramite l'offerta <a href="/wiki/Sky_Italia#Sky_HD" title="Sky Italia">Sky HD</a> e da <a href="/wiki/Mediaset" title="Mediaset">Mediaset</a>, quest'ultima attraverso il <a href="/wiki/Televisione_digitale_terrestre" title="Televisione digitale terrestre">digitale terrestre</a>. La <a href="/wiki/Rai" title="Rai">Rai</a> trasmette i giochi olimpici invernali di <a href="/wiki/XX_Giochi_olimpici_invernali" title="XX Giochi olimpici invernali">Torino 2006</a> in HDTV via satellite e, in via sperimentale, sulle frequenze terrestri nei dintorni di Torino a circuito chiuso, visibile nei soli luoghi pubblici; riprenderà le trasmissioni in HDTV dal <a href="/wiki/2010" title="2010">2010</a> con il solo canale <a href="/wiki/Rai_HD" title="Rai HD">Rai HD</a> e dal <a href="/wiki/2013" title="2013">2013</a> con <a href="/wiki/Rai_1" title="Rai 1">Rai 1</a>, <a href="/wiki/Rai_2" title="Rai 2">Rai 2</a> e <a href="/wiki/Rai_3" title="Rai 3">Rai 3</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Dimensione_equivalente_dei_formati">Dimensione equivalente dei formati</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=16:9&veaction=edit&section=5" title="Modifica la sezione Dimensione equivalente dei formati" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=16:9&action=edit&section=5" title="Edit section's source code: Dimensione equivalente dei formati"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Per calcolare la grandezza della diagonale in pollici di uno schermo con proporzioni 16:9 visivamente equivalente ad uno 4:3 o viceversa, è necessario considerare che una data immagine in un formato deve poter essere contenuta in schermi di entrambe le proporzioni (4:3 e 16:9) mantenendo le stesse esatte dimensioni; geometricamente i rettangoli contenenti la visione, vengono inseriti l'uno nell'altro mantenendo in comune la dimensione di un lato (l'altezza per immagini native 4:3 e la larghezza per immagini native 16:9). </p><p>La formula per calcolare in pollici la diagonale di uno schermo di un formato che contiene con le stesse dimensioni un'immagine nativa dell'altro formato, è la seguente: </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 \ diagonale_{16:9}=diagonale_{4:3}\times 1,2238}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mtext> </mtext> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <msub> <mi>e</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>16</mn> <mo>:</mo> <mn>9</mn> </mrow> </msub> <mo>=</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <msub> <mi>e</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>4</mn> <mo>:</mo> <mn>3</mn> </mrow> </msub> <mo>×</mo> <mn>1</mn> <mo>,</mo> <mn>2238</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \ diagonale_{16:9}=diagonale_{4:3}\times 1,2238}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/de7a122b27d7f210f94042748c46bdfd4bb57cc4" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:38.641ex; height:2.509ex;" alt="{\displaystyle \ diagonale_{16:9}=diagonale_{4:3}\times 1,2238}"></span></dd></dl> <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 \ diagonale_{4:3}=diagonale_{16:9}/1,2238}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mtext> </mtext> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <msub> <mi>e</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>4</mn> <mo>:</mo> <mn>3</mn> </mrow> </msub> <mo>=</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <msub> <mi>e</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>16</mn> <mo>:</mo> <mn>9</mn> </mrow> </msub> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mn>1</mn> <mo>,</mo> <mn>2238</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \ diagonale_{4:3}=diagonale_{16:9}/1,2238}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/1107e01053464153e9518c4b0815f56d473d54d3" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:36.963ex; height:2.843ex;" alt="{\displaystyle \ diagonale_{4:3}=diagonale_{16:9}/1,2238}"></span></dd></dl> <div class="mw-heading mw-heading2"><h2 id="Calcolo_delle_dimensioni">Calcolo delle dimensioni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=16:9&veaction=edit&section=6" title="Modifica la sezione Calcolo delle dimensioni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=16:9&action=edit&section=6" title="Edit section's source code: Calcolo delle dimensioni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Per uno schermo 16:9 è possibile, sicché noto tale rapporto, calcolare le diverse misure con il <a href="/wiki/Teorema_di_Pitagora" title="Teorema di Pitagora">teorema di Pitagora</a>. </p><p>Nota la larghezza, si possono calcolare le altre dimensioni usando le seguenti formule: </p> <ul><li><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 altezza={\frac {9}{16}}\cdot larghezza=0,5625\cdot larghezza}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>a</mi> <mi>l</mi> <mi>t</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mn>9</mn> <mn>16</mn> </mfrac> </mrow> <mo>⋅</mo> <mi>l</mi> <mi>a</mi> <mi>r</mi> <mi>g</mi> <mi>h</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> <mo>=</mo> <mn>0</mn> <mo>,</mo> <mn>5625</mn> <mo>⋅</mo> <mi>l</mi> <mi>a</mi> <mi>r</mi> <mi>g</mi> <mi>h</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle altezza={\frac {9}{16}}\cdot larghezza=0,5625\cdot larghezza}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/c33d6c883f3e3e4e2072fad961f135f4e88ec4d8" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:46.647ex; height:5.176ex;" alt="{\displaystyle altezza={\frac {9}{16}}\cdot larghezza=0,5625\cdot larghezza}"></span></li> <li><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 diagonale={\frac {\sqrt {337}}{16}}\cdot larghezza\simeq 1,1473\cdot larghezza}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <mi>e</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <msqrt> <mn>337</mn> </msqrt> <mn>16</mn> </mfrac> </mrow> <mo>⋅</mo> <mi>l</mi> <mi>a</mi> <mi>r</mi> <mi>g</mi> <mi>h</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> <mo>≃</mo> <mn>1</mn> <mo>,</mo> <mn>1473</mn> <mo>⋅</mo> <mi>l</mi> <mi>a</mi> <mi>r</mi> <mi>g</mi> <mi>h</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle diagonale={\frac {\sqrt {337}}{16}}\cdot larghezza\simeq 1,1473\cdot larghezza}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/5657b9cc2a4d30abbb18dc352735b88721cf3cf7" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:52.386ex; height:5.843ex;" alt="{\displaystyle diagonale={\frac {\sqrt {337}}{16}}\cdot larghezza\simeq 1,1473\cdot larghezza}"></span></li></ul> <p>Nota l'altezza, si possono calcolare le altre dimensioni usando le seguenti formule: </p> <ul><li><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 larghezza={\frac {16}{9}}\cdot altezza\simeq 1,7778\cdot altezza}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>l</mi> <mi>a</mi> <mi>r</mi> <mi>g</mi> <mi>h</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mn>16</mn> <mn>9</mn> </mfrac> </mrow> <mo>⋅</mo> <mi>a</mi> <mi>l</mi> <mi>t</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> <mo>≃</mo> <mn>1</mn> <mo>,</mo> <mn>7778</mn> <mo>⋅</mo> <mi>a</mi> <mi>l</mi> <mi>t</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle larghezza={\frac {16}{9}}\cdot altezza\simeq 1,7778\cdot altezza}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/070e1e0dfe4442328302addff7093c6848fa2111" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:43.983ex; height:5.176ex;" alt="{\displaystyle larghezza={\frac {16}{9}}\cdot altezza\simeq 1,7778\cdot altezza}"></span></li> <li><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 diagonale={\frac {\sqrt {337}}{9}}\cdot altezza\simeq 2,0397\cdot altezza}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <mi>e</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <msqrt> <mn>337</mn> </msqrt> <mn>9</mn> </mfrac> </mrow> <mo>⋅</mo> <mi>a</mi> <mi>l</mi> <mi>t</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> <mo>≃</mo> <mn>2</mn> <mo>,</mo> <mn>0397</mn> <mo>⋅</mo> <mi>a</mi> <mi>l</mi> <mi>t</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle diagonale={\frac {\sqrt {337}}{9}}\cdot altezza\simeq 2,0397\cdot altezza}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/4e4430ac8d8d9a27d831b433b3d9f24ecfe198dd" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:47.058ex; height:5.843ex;" alt="{\displaystyle diagonale={\frac {\sqrt {337}}{9}}\cdot altezza\simeq 2,0397\cdot altezza}"></span></li></ul> <p>Nota la diagonale, invece, si possono calcolare le altre dimensioni usando le seguenti formule: </p> <ul><li><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 altezza={\frac {9{\sqrt {337}}}{337}}\cdot diagonale\simeq 0,4903\cdot diagonale}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>a</mi> <mi>l</mi> <mi>t</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>9</mn> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mn>337</mn> </msqrt> </mrow> </mrow> <mn>337</mn> </mfrac> </mrow> <mo>⋅</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <mi>e</mi> <mo>≃</mo> <mn>0</mn> <mo>,</mo> <mn>4903</mn> <mo>⋅</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <mi>e</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle altezza={\frac {9{\sqrt {337}}}{337}}\cdot diagonale\simeq 0,4903\cdot diagonale}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/d940b494f3c3ea9d5a26b731d01c534dcf444b05" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:50.862ex; height:6.009ex;" alt="{\displaystyle altezza={\frac {9{\sqrt {337}}}{337}}\cdot diagonale\simeq 0,4903\cdot diagonale}"></span></li> <li><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 larghezza={\frac {16{\sqrt {337}}}{337}}\cdot diagonale\simeq 0,8716\cdot diagonale}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>l</mi> <mi>a</mi> <mi>r</mi> <mi>g</mi> <mi>h</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>16</mn> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mn>337</mn> </msqrt> </mrow> </mrow> <mn>337</mn> </mfrac> </mrow> <mo>⋅</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <mi>e</mi> <mo>≃</mo> <mn>0</mn> <mo>,</mo> <mn>8716</mn> <mo>⋅</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <mi>e</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle larghezza={\frac {16{\sqrt {337}}}{337}}\cdot diagonale\simeq 0,8716\cdot diagonale}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/e8e661614e4b2cf12b94c18f101ad6aaf9f5072b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:54.688ex; height:6.009ex;" alt="{\displaystyle larghezza={\frac {16{\sqrt {337}}}{337}}\cdot diagonale\simeq 0,8716\cdot diagonale}"></span></li></ul> <p>Dalle due precedenti formule, si evince come l'altezza sia circa il 49% della diagonale, mentre la larghezza circa il 87%. </p><p>A dimostrazione delle formule calcolate in precedenza, si noti che <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 {\frac {larghezza}{altezza}}={\frac {{\frac {16{\sqrt {337}}}{337}}\cdot diagonale}{{\frac {9{\sqrt {337}}}{337}}\cdot diagonale}}={\frac {16}{9}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi>l</mi> <mi>a</mi> <mi>r</mi> <mi>g</mi> <mi>h</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> </mrow> <mrow> <mi>a</mi> <mi>l</mi> <mi>t</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <mi>a</mi> </mrow> </mfrac> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>16</mn> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mn>337</mn> </msqrt> </mrow> </mrow> <mn>337</mn> </mfrac> </mrow> <mo>⋅</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <mi>e</mi> </mrow> <mrow> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>9</mn> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mn>337</mn> </msqrt> </mrow> </mrow> <mn>337</mn> </mfrac> </mrow> <mo>⋅</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <mi>e</mi> </mrow> </mfrac> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mn>16</mn> <mn>9</mn> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\frac {larghezza}{altezza}}={\frac {{\frac {16{\sqrt {337}}}{337}}\cdot diagonale}{{\frac {9{\sqrt {337}}}{337}}\cdot diagonale}}={\frac {16}{9}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/2ed4357102880d3a412302dea1f79b5de44ad159" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -4.171ex; width:38.834ex; height:9.509ex;" alt="{\displaystyle {\frac {larghezza}{altezza}}={\frac {{\frac {16{\sqrt {337}}}{337}}\cdot diagonale}{{\frac {9{\sqrt {337}}}{337}}\cdot diagonale}}={\frac {16}{9}}}"></span> (a livello meramente aritmetico, <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 {\frac {0,8716}{0,4903}}\simeq 1,7777\simeq {\frac {16}{9}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>0</mn> <mo>,</mo> <mn>8716</mn> </mrow> <mrow> <mn>0</mn> <mo>,</mo> <mn>4903</mn> </mrow> </mfrac> </mrow> <mo>≃</mo> <mn>1</mn> <mo>,</mo> <mn>7777</mn> <mo>≃</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mn>16</mn> <mn>9</mn> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\frac {0,8716}{0,4903}}\simeq 1,7777\simeq {\frac {16}{9}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/ac11c6bd6ce7dbe1b636730b5a4cb409b3aa79b4" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:23.887ex; height:5.843ex;" alt="{\displaystyle {\frac {0,8716}{0,4903}}\simeq 1,7777\simeq {\frac {16}{9}}}"></span>). </p><p>Per di più, data la dimensione della diagonale in <a href="/wiki/Pollice_(unit%C3%A0_di_misura)" title="Pollice (unità di misura)">pollici</a>, si può risalire alla dimensione (altezza e larghezza) dei lati in <a href="/wiki/Metro" title="Metro">centimetri</a> mediante le seguenti formule: </p> <ul><li><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 altezza_{cm}=2,54\cdot diagonale_{pollici}\cdot {\frac {9{\sqrt {337}}}{337}}={\frac {1143{\sqrt {337}}}{16850}}\cdot diagonale_{pollici}\simeq 1,2453\cdot diagonale_{pollici}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>a</mi> <mi>l</mi> <mi>t</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <msub> <mi>a</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>c</mi> <mi>m</mi> </mrow> </msub> <mo>=</mo> <mn>2</mn> <mo>,</mo> <mn>54</mn> <mo>⋅</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <msub> <mi>e</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>p</mi> <mi>o</mi> <mi>l</mi> <mi>l</mi> <mi>i</mi> <mi>c</mi> <mi>i</mi> </mrow> </msub> <mo>⋅</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>9</mn> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mn>337</mn> </msqrt> </mrow> </mrow> <mn>337</mn> </mfrac> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>1143</mn> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mn>337</mn> </msqrt> </mrow> </mrow> <mn>16850</mn> </mfrac> </mrow> <mo>⋅</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <msub> <mi>e</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>p</mi> <mi>o</mi> <mi>l</mi> <mi>l</mi> <mi>i</mi> <mi>c</mi> <mi>i</mi> </mrow> </msub> <mo>≃</mo> <mn>1</mn> <mo>,</mo> <mn>2453</mn> <mo>⋅</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <msub> <mi>e</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>p</mi> <mi>o</mi> <mi>l</mi> <mi>l</mi> <mi>i</mi> <mi>c</mi> <mi>i</mi> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle altezza_{cm}=2,54\cdot diagonale_{pollici}\cdot {\frac {9{\sqrt {337}}}{337}}={\frac {1143{\sqrt {337}}}{16850}}\cdot diagonale_{pollici}\simeq 1,2453\cdot diagonale_{pollici}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9a1acd56c0580670ff87754edf9e081528fb8fca" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:99.08ex; height:6.009ex;" alt="{\displaystyle altezza_{cm}=2,54\cdot diagonale_{pollici}\cdot {\frac {9{\sqrt {337}}}{337}}={\frac {1143{\sqrt {337}}}{16850}}\cdot diagonale_{pollici}\simeq 1,2453\cdot diagonale_{pollici}}"></span></li> <li><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 larghezza_{cm}=2,54\cdot diagonale_{pollici}\cdot {\frac {16{\sqrt {337}}}{337}}={\frac {1016{\sqrt {337}}}{8425}}\cdot diagonale_{pollici}\simeq 2,2138\cdot diagonale_{pollici}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>l</mi> <mi>a</mi> <mi>r</mi> <mi>g</mi> <mi>h</mi> <mi>e</mi> <mi>z</mi> <mi>z</mi> <msub> <mi>a</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>c</mi> <mi>m</mi> </mrow> </msub> <mo>=</mo> <mn>2</mn> <mo>,</mo> <mn>54</mn> <mo>⋅</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <msub> <mi>e</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>p</mi> <mi>o</mi> <mi>l</mi> <mi>l</mi> <mi>i</mi> <mi>c</mi> <mi>i</mi> </mrow> </msub> <mo>⋅</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>16</mn> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mn>337</mn> </msqrt> </mrow> </mrow> <mn>337</mn> </mfrac> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>1016</mn> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mn>337</mn> </msqrt> </mrow> </mrow> <mn>8425</mn> </mfrac> </mrow> <mo>⋅</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <msub> <mi>e</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>p</mi> <mi>o</mi> <mi>l</mi> <mi>l</mi> <mi>i</mi> <mi>c</mi> <mi>i</mi> </mrow> </msub> <mo>≃</mo> <mn>2</mn> <mo>,</mo> <mn>2138</mn> <mo>⋅</mo> <mi>d</mi> <mi>i</mi> <mi>a</mi> <mi>g</mi> <mi>o</mi> <mi>n</mi> <mi>a</mi> <mi>l</mi> <msub> <mi>e</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>p</mi> <mi>o</mi> <mi>l</mi> <mi>l</mi> <mi>i</mi> <mi>c</mi> <mi>i</mi> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle larghezza_{cm}=2,54\cdot diagonale_{pollici}\cdot {\frac {16{\sqrt {337}}}{337}}={\frac {1016{\sqrt {337}}}{8425}}\cdot diagonale_{pollici}\simeq 2,2138\cdot diagonale_{pollici}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/4bf3198c83c46b4b50bfb13f4e5aaf846100d93a" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:102.907ex; height:6.009ex;" alt="{\displaystyle larghezza_{cm}=2,54\cdot diagonale_{pollici}\cdot {\frac {16{\sqrt {337}}}{337}}={\frac {1016{\sqrt {337}}}{8425}}\cdot diagonale_{pollici}\simeq 2,2138\cdot diagonale_{pollici}}"></span></li></ul> <p>Questo vale per le formule precedenti e per la conversione esatta <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 1{in}=2,54{cm}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>1</mn> <mrow class="MJX-TeXAtom-ORD"> <mi>i</mi> <mi>n</mi> </mrow> <mo>=</mo> <mn>2</mn> <mo>,</mo> <mn>54</mn> <mrow class="MJX-TeXAtom-ORD"> <mi>c</mi> <mi>m</mi> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 1{in}=2,54{cm}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/489a6faabec59d3f9745f80eba78e1c86d63acc4" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:14.027ex; height:2.509ex;" alt="{\displaystyle 1{in}=2,54{cm}}"></span>. </p> <div class="mw-heading mw-heading2"><h2 id="Note">Note</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=16:9&veaction=edit&section=7" title="Modifica la sezione Note" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=16:9&action=edit&section=7" title="Edit section's source code: Note"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1"><b>^</b></a> <span class="reference-text"><cite class="citation pubblicazione" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) Mark Schubin, <a rel="nofollow" class="external text" href="https://www.sportsvideo.org/wp-content/uploads/2013/10/Searching-for-the-Perfect-Aspect-Ratio.pdf"><span style="font-style:italic;">Searching for the Perfect Aspect Ratio</span></a> (<span style="font-weight: bolder; font-size:80%"><abbr title="documento in formato PDF">PDF</abbr></span>), in <span style="font-style:italic;">SMPTE Journal</span>, agosto 1996. <small>URL consultato il 6 gennaio 2024</small>.</cite></span> </li> <li id="cite_note-2"><a href="#cite_ref-2"><b>^</b></a> <span class="reference-text"><cite class="citation testo" 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.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.1197-1-199802-W!!PDF-E.pdf"><span style="font-style:italic;">RECOMMENDATION ITU-R BT.1197-1: Enhanced wide-screen PAL TV transmission system (the PALplus system)</span></a> (<span style="font-weight: bolder; font-size:80%"><abbr title="documento in formato PDF">PDF</abbr></span>). <small>URL consultato il 6 gennaio 2024</small>.</cite></span> </li> <li id="cite_note-3"><a href="#cite_ref-3"><b>^</b></a> <span class="reference-text"><cite class="citation testo" 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.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.1298-0-199710-W!!PDF-E.pdf"><span style="font-style:italic;">RECOMMENDATION ITU-R BT.1298: Enhanced wide-screen NTSC TV transmission system</span></a> (<span style="font-weight: bolder; font-size:80%"><abbr title="documento in formato PDF">PDF</abbr></span>). <small>URL consultato il 6 gennaio 2024</small>.</cite></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Voci_correlate">Voci correlate</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=16:9&veaction=edit&section=8" 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=16:9&action=edit&section=8" 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/Rapporto_d%27aspetto" title="Rapporto d'aspetto">Rapporto d'aspetto</a></li> <li><a href="/wiki/Formati_cinematografici" title="Formati cinematografici">Formati cinematografici</a></li> <li><a href="/wiki/Widescreen" title="Widescreen">Widescreen</a></li> <li><a href="/wiki/Letterbox" title="Letterbox">Letterbox</a></li> <li><a href="/wiki/Fullscreen" title="Fullscreen">Fullscreen</a></li> <li><a href="/wiki/Pan_and_scan" title="Pan and scan">Pan and scan</a></li> <li><a href="/wiki/Open_matte" title="Open matte">Open matte</a></li> <li><a href="/wiki/Mascherino" title="Mascherino">Mascherino</a></li> <li><a href="/wiki/Risoluzione_dello_schermo" title="Risoluzione dello schermo">Risoluzione dello schermo</a></li> <li><a href="/wiki/HDTV" title="HDTV">HDTV</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=16:9&veaction=edit&section=9" 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=16:9&action=edit&section=9" 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; 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