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<div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Mrežno mjesto"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Sadržaj" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Sadržaj</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">premjesti</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">sakrij</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">Početak</div> </a> </li> <li id="toc-Objašnjenje" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Objašnjenje"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Objašnjenje</span> </div> </a> <ul id="toc-Objašnjenje-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Izvori" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Izvori"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Izvori</span> </div> </a> <ul id="toc-Izvori-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Vanjske_poveznice" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Vanjske_poveznice"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Vanjske poveznice</span> </div> </a> <ul id="toc-Vanjske_poveznice-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="Sadržaj" 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="Prikaz sadržaja stranice" > <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">Prikaz sadržaja stranice</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">Fresnelova zrcala</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="Idi na druge jezične varijante članka. Dostupan je na 48 jezika" > <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-48" 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">48 jezika</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Fresnel-Linse" title="Fresnel-Linse – švicarski njemački" lang="gsw" hreflang="gsw" data-title="Fresnel-Linse" data-language-autonym="Alemannisch" data-language-local-name="švicarski njemački" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B9%D8%AF%D8%B3%D8%A9_%D9%81%D8%B1%D9%8A%D9%86%D9%84" title="عدسة فرينل – arapski" lang="ar" hreflang="ar" data-title="عدسة فرينل" data-language-autonym="العربية" data-language-local-name="arapski" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Lente_de_Fresnel" title="Lente de Fresnel – asturijski" lang="ast" hreflang="ast" data-title="Lente de Fresnel" data-language-autonym="Asturianu" data-language-local-name="asturijski" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%A4%D1%80%D0%B5%D0%BD%D0%B5%D0%BB%D1%8C_%D0%BB%D0%B8%D0%BD%D0%B7%D0%B0%D2%BB%D1%8B" title="Френель линзаһы – baškirski" lang="ba" hreflang="ba" data-title="Френель линзаһы" data-language-autonym="Башҡортса" data-language-local-name="baškirski" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A4%D1%80%D0%B5%D0%BD%D0%B5%D0%BB%D0%BE%D0%B2%D0%B0_%D0%BB%D0%B5%D1%89%D0%B0" title="Френелова леща – bugarski" lang="bg" hreflang="bg" data-title="Френелова леща" data-language-autonym="Български" data-language-local-name="bugarski" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Lent_de_Fresnel" title="Lent de Fresnel – katalonski" lang="ca" hreflang="ca" data-title="Lent de Fresnel" data-language-autonym="Català" data-language-local-name="katalonski" 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/Fresnelova_%C4%8Do%C4%8Dka" title="Fresnelova čočka – češki" lang="cs" hreflang="cs" data-title="Fresnelova čočka" data-language-autonym="Čeština" data-language-local-name="češki" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Fresnellinse" title="Fresnellinse – danski" lang="da" hreflang="da" data-title="Fresnellinse" data-language-autonym="Dansk" data-language-local-name="danski" 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/Fresnel-Linse" title="Fresnel-Linse – njemački" lang="de" hreflang="de" data-title="Fresnel-Linse" data-language-autonym="Deutsch" data-language-local-name="njemački" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Fresnel_lens" title="Fresnel lens – engleski" lang="en" hreflang="en" data-title="Fresnel lens" data-language-autonym="English" data-language-local-name="engleski" 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/Fresnel-lenso" title="Fresnel-lenso – esperanto" lang="eo" hreflang="eo" data-title="Fresnel-lenso" 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/Lente_de_Fresnel" title="Lente de Fresnel – španjolski" lang="es" hreflang="es" data-title="Lente de Fresnel" data-language-autonym="Español" data-language-local-name="španjolski" 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/Fresneli_l%C3%A4%C3%A4ts" title="Fresneli lääts – estonski" lang="et" hreflang="et" data-title="Fresneli lääts" data-language-autonym="Eesti" data-language-local-name="estonski" 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/Fresnel_leiar" title="Fresnel leiar – baskijski" lang="eu" hreflang="eu" data-title="Fresnel leiar" data-language-autonym="Euskara" data-language-local-name="baskijski" 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%B9%D8%AF%D8%B3%DB%8C_%D9%81%D8%B1%D8%B3%D9%86%D9%84" title="عدسی فرسنل – perzijski" lang="fa" hreflang="fa" data-title="عدسی فرسنل" data-language-autonym="فارسی" data-language-local-name="perzijski" 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/Fresnel-linssi" title="Fresnel-linssi – finski" lang="fi" hreflang="fi" data-title="Fresnel-linssi" data-language-autonym="Suomi" data-language-local-name="finski" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Lentille_de_Fresnel" title="Lentille de Fresnel – francuski" lang="fr" hreflang="fr" data-title="Lentille de Fresnel" data-language-autonym="Français" data-language-local-name="francuski" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Fresnel-Lins" title="Fresnel-Lins – sjevernofrizijski" lang="frr" hreflang="frr" data-title="Fresnel-Lins" data-language-autonym="Nordfriisk" data-language-local-name="sjevernofrizijski" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Lente_de_Fresnel" title="Lente de Fresnel – galicijski" lang="gl" hreflang="gl" data-title="Lente de Fresnel" data-language-autonym="Galego" data-language-local-name="galicijski" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A2%D7%93%D7%A9%D7%AA_%D7%A4%D7%A8%D7%A0%D7%9C" title="עדשת פרנל – hebrejski" lang="he" hreflang="he" data-title="עדשת פרנל" data-language-autonym="עברית" data-language-local-name="hebrejski" 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%AB%E0%A5%8D%E0%A4%B0%E0%A5%87%E0%A4%B8%E0%A4%A8%E0%A5%87%E0%A4%B2_%E0%A4%A4%E0%A4%BE%E0%A4%B2" title="फ्रेसनेल ताल – hindski" lang="hi" hreflang="hi" data-title="फ्रेसनेल ताल" data-language-autonym="हिन्दी" data-language-local-name="hindski" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Lensa_Fresnel" title="Lensa Fresnel – indonezijski" lang="id" hreflang="id" data-title="Lensa Fresnel" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonezijski" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Lente_di_Fresnel" title="Lente di Fresnel – talijanski" lang="it" hreflang="it" data-title="Lente di Fresnel" data-language-autonym="Italiano" data-language-local-name="talijanski" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%95%E3%83%AC%E3%83%8D%E3%83%AB%E3%83%AC%E3%83%B3%E3%82%BA" title="フレネルレンズ – japanski" lang="ja" hreflang="ja" data-title="フレネルレンズ" data-language-autonym="日本語" data-language-local-name="japanski" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%A4%D1%80%D0%B5%D0%BD%D0%B5%D0%BB%D1%8C_%D0%BB%D0%B8%D0%BD%D0%B7%D0%B0%D1%81%D1%8B" title="Френель линзасы – kazaški" lang="kk" hreflang="kk" data-title="Френель линзасы" data-language-autonym="Қазақша" data-language-local-name="kazaški" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%94%84%EB%A0%88%EB%84%AC_%EB%A0%8C%EC%A6%88" title="프레넬 렌즈 – korejski" lang="ko" hreflang="ko" data-title="프레넬 렌즈" data-language-autonym="한국어" data-language-local-name="korejski" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A4%D1%80%D0%B5%D0%BD%D0%B5%D0%BB%D0%BE%D0%B2%D0%B0_%D0%BB%D0%B5%D1%9C%D0%B0" title="Френелова леќа – makedonski" lang="mk" hreflang="mk" data-title="Френелова леќа" data-language-autonym="Македонски" data-language-local-name="makedonski" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%A4%D1%80%D0%B5%D0%BD%D0%B5%D0%BB%D0%B8%D0%B9%D0%BD_%D0%BB%D0%B8%D0%BD%D0%B7" title="Френелийн линз – mongolski" lang="mn" hreflang="mn" data-title="Френелийн линз" data-language-autonym="Монгол" data-language-local-name="mongolski" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Kanta_Fresnel" title="Kanta Fresnel – malajski" lang="ms" hreflang="ms" data-title="Kanta Fresnel" data-language-autonym="Bahasa Melayu" data-language-local-name="malajski" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Fresnellens" title="Fresnellens – nizozemski" lang="nl" hreflang="nl" data-title="Fresnellens" data-language-autonym="Nederlands" data-language-local-name="nizozemski" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Fresnel-linse" title="Fresnel-linse – norveški bokmål" lang="nb" hreflang="nb" data-title="Fresnel-linse" data-language-autonym="Norsk bokmål" data-language-local-name="norveški bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Soczewka_Fresnela" title="Soczewka Fresnela – poljski" lang="pl" hreflang="pl" data-title="Soczewka Fresnela" data-language-autonym="Polski" data-language-local-name="poljski" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Lente_de_Fresnel" title="Lente de Fresnel – portugalski" lang="pt" hreflang="pt" data-title="Lente de Fresnel" data-language-autonym="Português" data-language-local-name="portugalski" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9B%D0%B8%D0%BD%D0%B7%D0%B0_%D0%A4%D1%80%D0%B5%D0%BD%D0%B5%D0%BB%D1%8F" title="Линза Френеля – ruski" lang="ru" hreflang="ru" data-title="Линза Френеля" data-language-autonym="Русский" data-language-local-name="ruski" 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/Fresnel_lens" title="Fresnel lens – Simple English" lang="en-simple" hreflang="en-simple" data-title="Fresnel lens" 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/Fresnelova_%C5%A1o%C5%A1ovka" title="Fresnelova šošovka – slovački" lang="sk" hreflang="sk" data-title="Fresnelova šošovka" data-language-autonym="Slovenčina" data-language-local-name="slovački" 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/Fresnelova_le%C4%8Da" title="Fresnelova leča – slovenski" lang="sl" hreflang="sl" data-title="Fresnelova leča" data-language-autonym="Slovenščina" data-language-local-name="slovenski" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A4%D1%80%D0%B5%D1%81%D0%BD%D0%B5%D0%BB%D0%BE%D0%B2%D0%B0_%D1%81%D0%BE%D1%87%D0%B8%D0%B2%D0%B0" title="Фреснелова сочива – srpski" lang="sr" hreflang="sr" data-title="Фреснелова сочива" data-language-autonym="Српски / srpski" data-language-local-name="srpski" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Fresnel-lins" title="Fresnel-lins – švedski" lang="sv" hreflang="sv" data-title="Fresnel-lins" data-language-autonym="Svenska" data-language-local-name="švedski" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%AA%E0%AE%BF%E0%AE%B0%E0%AF%86%E0%AE%A9%E0%AF%86%E0%AE%B2%E0%AF%8D_%E0%AE%B5%E0%AE%BF%E0%AE%B2%E0%AF%8D%E0%AE%B2%E0%AF%88" title="பிரெனெல் வில்லை – tamilski" lang="ta" hreflang="ta" data-title="பிரெனெல் வில்லை" data-language-autonym="தமிழ்" data-language-local-name="tamilski" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%80%E0%B8%A5%E0%B8%99%E0%B8%AA%E0%B9%8C%E0%B9%81%E0%B8%9F%E0%B8%A3%E0%B9%81%E0%B8%99%E0%B8%A5" title="เลนส์แฟรแนล – tajlandski" lang="th" hreflang="th" data-title="เลนส์แฟรแนล" data-language-autonym="ไทย" data-language-local-name="tajlandski" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Fresnel_lens" title="Fresnel lens – turski" lang="tr" hreflang="tr" data-title="Fresnel lens" data-language-autonym="Türkçe" data-language-local-name="turski" 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%9B%D1%96%D0%BD%D0%B7%D0%B0_%D0%A4%D1%80%D0%B5%D0%BD%D0%B5%D0%BB%D1%8F" title="Лінза Френеля – ukrajinski" lang="uk" hreflang="uk" data-title="Лінза Френеля" data-language-autonym="Українська" data-language-local-name="ukrajinski" 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/Fresnel_linzalari" title="Fresnel linzalari – uzbečki" lang="uz" hreflang="uz" data-title="Fresnel linzalari" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbečki" 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/Th%E1%BA%A5u_k%C3%ADnh_Fresnel" title="Thấu kính Fresnel – vijetnamski" lang="vi" hreflang="vi" data-title="Thấu kính Fresnel" data-language-autonym="Tiếng Việt" data-language-local-name="vijetnamski" 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/Lente_Fresnel" title="Lente Fresnel – waray" lang="war" hreflang="war" data-title="Lente Fresnel" data-language-autonym="Winaray" data-language-local-name="waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E8%8F%B2%E6%B6%85%E8%80%B3%E9%80%8F%E9%8F%A1" title="菲涅耳透鏡 – kineski" lang="zh" hreflang="zh" data-title="菲涅耳透鏡" data-language-autonym="中文" data-language-local-name="kineski" 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%8F%B2%E6%B6%85%E7%88%BE%E9%80%8F%E9%8F%A1" title="菲涅爾透鏡 – kantonski" lang="yue" hreflang="yue" data-title="菲涅爾透鏡" data-language-autonym="粵語" data-language-local-name="kantonski" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a 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knjigu</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Posebno:DownloadAsPdf&page=Fresnelova_zrcala&action=show-download-screen"><span>Preuzmi kao PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Fresnelova_zrcala&printable=yes" title="Inačica za ispis ove stranice [p]" accesskey="p"><span>Inačica za ispis</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> Wikimedijini projekti </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Fresnel_lenses" hreflang="en"><span>Zajednički poslužitelj</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q14672" title="Poveznica na stavku na projektu Wikipodatci [g]" accesskey="g"><span>Stavka na Wikipodatcima</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Pomagala"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Izgled"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Izgled</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">premjesti</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">sakrij</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Izvor: Wikipedija</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="hr" dir="ltr"><figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Datoteka:Fresnel_Lens_at_Point_Arena_Lighthouse_Museum.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/Fresnel_Lens_at_Point_Arena_Lighthouse_Museum.jpg/200px-Fresnel_Lens_at_Point_Arena_Lighthouse_Museum.jpg" decoding="async" width="200" height="289" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/Fresnel_Lens_at_Point_Arena_Lighthouse_Museum.jpg/300px-Fresnel_Lens_at_Point_Arena_Lighthouse_Museum.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/37/Fresnel_Lens_at_Point_Arena_Lighthouse_Museum.jpg/400px-Fresnel_Lens_at_Point_Arena_Lighthouse_Museum.jpg 2x" data-file-width="2563" data-file-height="3709" /></a><figcaption>Fresnelova leća ili Fresnelova zrcala se obično koriste na svjetlima <a href="/wiki/Svjetionik" title="Svjetionik">svjetionika</a>.</figcaption></figure> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Datoteka:Fresnelova_zrcala_1.pdf" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/hr/thumb/a/aa/Fresnelova_zrcala_1.pdf/page1-300px-Fresnelova_zrcala_1.pdf.jpg" decoding="async" width="300" height="212" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/hr/thumb/a/aa/Fresnelova_zrcala_1.pdf/page1-450px-Fresnelova_zrcala_1.pdf.jpg 1.5x, //upload.wikimedia.org/wikipedia/hr/thumb/a/aa/Fresnelova_zrcala_1.pdf/page1-600px-Fresnelova_zrcala_1.pdf.jpg 2x" data-file-width="1754" data-file-height="1239" /></a><figcaption><a href="/wiki/Interferencija_valova" title="Interferencija valova">Interferencija valova</a> <a href="/wiki/Svjetlost" title="Svjetlost">svjetlosti</a> je najočitija potvrda <a href="/wiki/Valna_teorija" title="Valna teorija">valne prirode svjetlosti</a>, a nju možemo izvesti pomoću takozvanih Fresnelovih zrcala.</figcaption></figure> <p><b>Fresnelova zrcala</b> ili <b>Fresnelova leća</b> je <a href="/wiki/Le%C4%87a_(optika)" title="Leća (optika)">leća</a> velikoga <a href="/wiki/Vidni_kut" title="Vidni kut">vidnoga kuta</a>, a male debljine. Ona je stupnjevita <a href="/wiki/Opti%C4%8Dka_le%C4%87a" class="mw-redirect" title="Optička leća">optička leća</a> sastavljena od niza staklenih prstenova sa zajedničkim <a href="/wiki/%C5%BDari%C5%A1te" title="Žarište">žarištem</a> ili fokusom. Koristi se kao <a href="/wiki/Sabirna_le%C4%87a" title="Sabirna leća">sabirna leća</a> za lokalno jače osvjetljenje ili u signalizaciji za dobivanje jačega paralelnog snopa svjetlosti (na primjer u <a href="/wiki/Svjetionik" title="Svjetionik">svjetionicima</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> </p> <div class="mw-heading mw-heading2"><h2 id="Objašnjenje"><span id="Obja.C5.A1njenje"></span>Objašnjenje</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Fresnelova_zrcala&veaction=edit&section=1" title="Uredi odlomak: Objašnjenje" class="mw-editsection-visualeditor"><span>uredi</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Fresnelova_zrcala&action=edit&section=1" title="Uredi kôd odjeljka Objašnjenje"><span>uredi kôd</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Interferencija_valova" title="Interferencija valova">Interferencija valova</a> <a href="/wiki/Svjetlost" title="Svjetlost">svjetlosti</a> je najočitija potvrda <a href="/wiki/Valna_teorija" title="Valna teorija">valne prirode svjetlosti</a>. Nju možemo izvesti pomoću takozvanih Fresnelovih zrcala. Taj je <a href="/wiki/Pokus" title="Pokus">pokus</a> prvi izveo francuski <a href="/wiki/Fizi%C4%8Dar" title="Fizičar">fizičar</a> <a href="/wiki/Augustin_Jean_Fresnel" title="Augustin Jean Fresnel">A. J. Fresnel</a>. Iz izvora čiste jednobojne svjetlosti <i>S</i> dolaze zrake na dva <a href="/wiki/Ravno_zrcalo" title="Ravno zrcalo">ravna zrcala</a> stavljena jedno do drugoga tako, da zatvaraju <a href="/wiki/Kut" title="Kut">kut</a> nešto manji od 180°. Od tog <a href="/wiki/Umjetni_izvori_svjetla" title="Umjetni izvori svjetla">izvora svjetlosti</a> dobivamo u zrcalima dva prividna (virtualna) izvora svjetlosti <i>S’</i> i <i>S”</i>. Zrake, koje izlaze iz njih daju dva snopa <a href="/wiki/Zraka" class="mw-disambig" title="Zraka">zraka</a>. U prostoru gdje se ta dva snopa prekrivaju, oni interferiraju, te nastaje <a href="/wiki/Stojni_val" title="Stojni val">stojni val</a> svjetlosti. <a href="/wiki/Refleksija" title="Refleksija">Reflektirani</a> valovi svjetlosti mogu se shvatiti kao kružni <a href="/wiki/Val" title="Val">valovi</a> s centrima <i>S’</i> i <i>S”</i>. </p><p>U točkama ravnine gdje se sastaje brijeg i dol vala nastaje poništavanje <a href="/wiki/Titranje" title="Titranje">titranja</a> i prema tome tama, a gdje se sastaju dva brijega ili dva dola, nastaje zbrajanje <a href="/wiki/Svjetlosna_jakost" title="Svjetlosna jakost">jakosti (intenziteta) svjetlosti</a>. Na zastoru se kod tog <a href="/wiki/Pokus" title="Pokus">pokusa</a> vide tamne i svijetle pruge, takozvane pruge interferencije. Ako se mjesto sa svjetlošću čiste boje, to jest valova određene duljine, izvede Fresnelov pokus sa svjetlošću miješane, na primjer bijele boje, dobiva se na zastoru mjesto tamnih i svijetlih pruga <a href="/wiki/Spektar_boja" class="mw-redirect" title="Spektar boja">spektar boja</a>. Pri tom, naime, valovi različite duljine interferiraju na različitim mjestima. </p><p>Dok je interferencija valova na površini vode pojava koja se može lako izvesti, interferencija svjetlosti se opaža samo pod naročitim uvjetima. Nikada se ne opaža interferencija svjetlosti s različitim izvorima, već samo onda kada se uz pomoć <a href="/wiki/Refleksija" title="Refleksija">refleksije</a> ili <a href="/wiki/Lom_svjetlosti" class="mw-redirect" title="Lom svjetlosti">loma</a> ponovo sastanu zrake svjetlosti koje su izašle iz točke izvora svjetlosti. Takve se dvije zrake koje izlaze iz istog izvora zovu <a href="/wiki/Koherencija" class="mw-disambig" title="Koherencija">koherentne</a>, to jest međusobno povezane. Uzrok je u tome što se emisija svjetlosti ne zbiva jednoliko, već pojedini <a href="/wiki/Atom" title="Atom">atomi</a> svijetlećeg tijela emitiraju valove svjetlosti na mahove i s različitim smjerovima titranja. </p><p>Da na jednom mjestu prostora nastane poništavanje dviju zraka svjetlosti, moraju na to mjesto stalno dolaziti titraji s protivno jednakim <a href="/wiki/Amplituda" title="Amplituda">elongacijama</a>. Taj uvjet nije dovoljan kod titranja koje dolazi iz različitih izvora svjetlosti, već samo onda kad se sastanu valovi koji imaju zajednički izvor, odnosno istu valnu duljinu.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Izvori">Izvori</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Fresnelova_zrcala&veaction=edit&section=2" title="Uredi odlomak: Izvori" class="mw-editsection-visualeditor"><span>uredi</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Fresnelova_zrcala&action=edit&section=2" title="Uredi kôd odjeljka Izvori"><span>uredi kôd</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r6541845">.mw-parser-output .reflist{font-size:90%;margin-bottom:0.5em;list-style-type:decimal}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"> <b>Fresnelova leća</b>, <a rel="nofollow" class="external autonumber" href="http://www.enciklopedija.hr/Natuknica.aspx?ID=20594">[1]</a> "Hrvatska enciklopedija", Leksikografski zavod Miroslav Krleža, www.enciklopedija.hr, 2016.</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"> Velimir Kruz: "Tehnička fizika za tehničke škole", "Školska knjiga" Zagreb, 1969.</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Vanjske_poveznice">Vanjske poveznice</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Fresnelova_zrcala&veaction=edit&section=3" title="Uredi odlomak: Vanjske poveznice" class="mw-editsection-visualeditor"><span>uredi</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Fresnelova_zrcala&action=edit&section=3" title="Uredi kôd odjeljka Vanjske poveznice"><span>uredi kôd</span></a><span class="mw-editsection-bracket">]</span></span></div> <table border="0" class="noprint" style="clear: right; border: solid var(--border-color-base, #a2a9b1) 1px; margin: 0 0 1em 1em; font-size: 90%; background: var(--background-color-neutral-subtle, #f8f9fa); color: inherit; width: 250px; padding: 4px; spacing: 0px; text-align: left; float: right;"> <tbody><tr> <td><figure class="mw-halign-none" typeof="mw:File"><span title="Logotip Zajedničkog poslužitelja"><img alt="Logotip Zajedničkog poslužitelja" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/60px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span><figcaption>Logotip Zajedničkog poslužitelja</figcaption></figure> </td> <td><span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Glavna_stranica?uselang=hr">Zajednički poslužitelj</a> ima još gradiva o temi <i><b><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Fresnel_lenses?uselang=hr">Fresnelova zrcala</a></b></i></span> </td></tr></tbody></table>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; 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