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aria-controls="toc-Rifrattometro_a_prismi-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 Rifrattometro a prismi</span> </button> <ul id="toc-Rifrattometro_a_prismi-sublist" class="vector-toc-list"> <li id="toc-Utilizzo_per_la_misura_indiretta_dell'indice_di_rifrazione_di_minerali" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Utilizzo_per_la_misura_indiretta_dell'indice_di_rifrazione_di_minerali"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Utilizzo per la misura indiretta dell'indice di rifrazione di minerali</span> </div> </a> <ul id="toc-Utilizzo_per_la_misura_indiretta_dell'indice_di_rifrazione_di_minerali-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Totalriflettometro_a_semisfera" class="vector-toc-list-item vector-toc-level-1 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href="#Svantaggi"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Svantaggi</span> </div> </a> <ul id="toc-Svantaggi-sublist" class="vector-toc-list"> </ul> </li> </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">3</span> <span>Note</span> </div> </a> <ul id="toc-Note-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">4</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">5</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">Rifrattometro di Abbe</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 16 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-16" 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">16 lingue</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Abbe_refraktometri" title="Abbe refraktometri - azerbaigiano" lang="az" hreflang="az" data-title="Abbe refraktometri" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaigiano" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%85%E0%A7%8D%E0%A6%AF%E0%A6%BE%E0%A6%AC%E0%A7%87_%E0%A6%AA%E0%A7%8D%E0%A6%B0%E0%A6%A4%E0%A6%BF%E0%A6%B8%E0%A6%B0%E0%A6%BE%E0%A6%82%E0%A6%95-%E0%A6%AE%E0%A6%BE%E0%A6%AA%E0%A6%95" title="অ্যাবে প্রতিসরাংক-মাপক - bengalese" lang="bn" hreflang="bn" data-title="অ্যাবে প্রতিসরাংক-মাপক" data-language-autonym="বাংলা" data-language-local-name="bengalese" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Refract%C3%B2metre_d%27Abbe" title="Refractòmetre d'Abbe - catalano" lang="ca" hreflang="ca" data-title="Refractòmetre d'Abbe" 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/Abbeho_refraktometr" title="Abbeho refraktometr - ceco" lang="cs" hreflang="cs" data-title="Abbeho refraktometr" 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/Abbe-Refraktometer" title="Abbe-Refraktometer - tedesco" lang="de" hreflang="de" data-title="Abbe-Refraktometer" data-language-autonym="Deutsch" data-language-local-name="tedesco" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Abbe_refractometer" title="Abbe refractometer - inglese" lang="en" hreflang="en" data-title="Abbe refractometer" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Abbe_refraktomeeter" title="Abbe refraktomeeter - estone" lang="et" hreflang="et" data-title="Abbe refraktomeeter" data-language-autonym="Eesti" data-language-local-name="estone" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Abbe-refraktometer" title="Abbe-refraktometer - norvegese nynorsk" lang="nn" hreflang="nn" data-title="Abbe-refraktometer" data-language-autonym="Norsk nynorsk" data-language-local-name="norvegese nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Refraktometr_Abbego" title="Refraktometr Abbego - polacco" lang="pl" hreflang="pl" data-title="Refraktometr Abbego" data-language-autonym="Polski" data-language-local-name="polacco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A0%D0%B5%D1%84%D1%80%D0%B0%D0%BA%D1%82%D0%BE%D0%BC%D0%B5%D1%82%D1%80_%D0%90%D0%B1%D0%B1%D0%B5" title="Рефрактометр Аббе - russo" lang="ru" hreflang="ru" data-title="Рефрактометр Аббе" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Abbeho_refraktometer" title="Abbeho refraktometer - slovacco" lang="sk" hreflang="sk" data-title="Abbeho refraktometer" data-language-autonym="Slovenčina" data-language-local-name="slovacco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Abbejev_refraktometer" title="Abbejev refraktometer - sloveno" lang="sl" hreflang="sl" data-title="Abbejev refraktometer" data-language-autonym="Slovenščina" data-language-local-name="sloveno" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%85%E0%AE%AA%E0%AE%BF_%E0%AE%92%E0%AE%B3%E0%AE%BF%E0%AE%B5%E0%AE%BF%E0%AE%B2%E0%AE%95%E0%AE%B2%E0%AF%8D%E0%AE%AE%E0%AE%BE%E0%AE%A9%E0%AE%BF" title="அபி ஒளிவிலகல்மானி - tamil" lang="ta" hreflang="ta" data-title="அபி ஒளிவிலகல்மானி" data-language-autonym="தமிழ்" data-language-local-name="tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A0%D0%B5%D1%84%D1%80%D0%B0%D0%BA%D1%82%D0%BE%D0%BC%D0%B5%D1%82%D1%80_%D0%90%D0%B1%D0%B1%D0%B5" title="Рефрактометр Аббе - ucraino" lang="uk" hreflang="uk" data-title="Рефрактометр Аббе" 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/Abbe_Refraktrometri" title="Abbe Refraktrometri - uzbeco" lang="uz" hreflang="uz" data-title="Abbe Refraktrometri" 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-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%98%BF%E8%B4%9D%E6%8A%98%E5%85%89%E4%BB%AA" title="阿贝折光仪 - cinese" lang="zh" hreflang="zh" data-title="阿贝折光仪" data-language-autonym="中文" data-language-local-name="cinese" class="interlanguage-link-target"><span>中文</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/Q306180#sitelinks-wikipedia" title="Modifica collegamenti interlinguistici" class="wbc-editpage">Modifica collegamenti</a></span></div> </div> </div> </div> </header> <div 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o sezione  sull'argomento fisica <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=Rifrattometro_di_Abbe&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>. Segui i suggerimenti del <a href="/wiki/Progetto:Fisica" title="Progetto:Fisica">progetto di riferimento</a>.</div> </div> </div> </div> </div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Abbe_refractometer.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/34/Abbe_refractometer.jpg/220px-Abbe_refractometer.jpg" decoding="async" width="220" height="308" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/34/Abbe_refractometer.jpg/330px-Abbe_refractometer.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/3/34/Abbe_refractometer.jpg 2x" data-file-width="359" data-file-height="503" /></a><figcaption>Rifrattometro di Abbe con prismi a temperatura controllata</figcaption></figure> <p>Il <b><a href="/wiki/Rifrattometro" title="Rifrattometro">rifrattometro</a> di Abbe</b><sup id="cite_ref-a_1-0" class="reference"><a href="#cite_note-a-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> è uno strumento che permette di effettuare misurazioni ad alta precisione degli indici di rifrazione di liquidi o solidi. </p><p>Esistono due tipi di rifrattometro di <a href="/wiki/Ernst_Abbe" title="Ernst Abbe">Abbe</a>: </p> <ul><li>il rifrattometro a prismi</li> <li>il totalriflettometro a mezza sfera</li></ul> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Rifrattometro_a_prismi">Rifrattometro a prismi</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rifrattometro_di_Abbe&veaction=edit&section=1" title="Modifica la sezione Rifrattometro a prismi" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Rifrattometro_di_Abbe&action=edit&section=1" title="Edit section's source code: Rifrattometro a prismi"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>L'<a href="/wiki/Indice_di_rifrazione" title="Indice di rifrazione">indice di rifrazione</a> di un liquido disponibile in gocce (quindi ove non sia possibile l'immersione nel liquido da esaminare) viene determinato mediante il <b>rifrattometro a prismi</b>. Questo tipo di rifrattometro è composto da due prismi di <a href="/wiki/Vetro_Flint" title="Vetro Flint">Vetro Flint</a> incernierati che si chiudono <a href="/wiki/Uno_sull%27altro" title="Uno sull'altro">uno sull'altro</a>, separati di circa 0,15 mm. All'interno di questo spessore viene posta una goccia del liquido da esaminare (espansa su tutta la superficie di vetro). Il valore dell'indice di rifrazione, alla frequenza del <a href="/wiki/Sodio" title="Sodio">sodio</a> (il liquido viene attraversato dalla luce emessa da due piccole <a href="/wiki/Lampade_al_sodio" class="mw-redirect" title="Lampade al sodio">lampade al sodio</a>) si legge direttamente dallo strumento, dotato di un monocolo. Il valore ottenuto deve sempre essere accompagnato dall'indicazione della temperatura a cui si è effettuata la misura (in genere espresso come apice) e dalla frequenza a cui è fatta la lettura (pedice), generalmente quella della luce gialla della riga D del sodio. </p><p>La precisione di misura ottenuta corrisponde a due unità della 4ª cifra decimale<sup id="cite_ref-a_1-1" class="reference"><a href="#cite_note-a-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>. </p> <div class="mw-heading mw-heading3"><h3 id="Utilizzo_per_la_misura_indiretta_dell'indice_di_rifrazione_di_minerali"><span id="Utilizzo_per_la_misura_indiretta_dell.27indice_di_rifrazione_di_minerali"></span>Utilizzo per la misura indiretta dell'indice di rifrazione di minerali</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rifrattometro_di_Abbe&veaction=edit&section=2" title="Modifica la sezione Utilizzo per la misura indiretta dell'indice di rifrazione di minerali" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Rifrattometro_di_Abbe&action=edit&section=2" title="Edit section's source code: Utilizzo per la misura indiretta dell'indice di rifrazione di minerali"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Il rifrattometro a prismi è comunemente usato per misurare con precisione l'indice di rifrazione dei liquidi utilizzati per individuare indirettamente, col <i><a href="/wiki/Metodo_della_linea_di_Becke" title="Metodo della linea di Becke">metodo della linea di Becke</a></i>, l'indice di rifrazione di minuscoli frammenti di minerali. </p><p>Questo metodo consiste nell'individuare un liquido che abbia il medesimo indice di rifrazione del minerale da riconoscere.<br /> Il liquido viene comunemente preparato per diluizioni successive di liquidi ad elevato indice di rifrazione.<br /> Una volta individuato il liquido che ha il medesimo indice, l'indice di rifrazione del liquido si misura col rifrattometro a prismi. </p> <div class="mw-heading mw-heading2"><h2 id="Totalriflettometro_a_semisfera">Totalriflettometro a semisfera</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rifrattometro_di_Abbe&veaction=edit&section=3" title="Modifica la sezione Totalriflettometro a semisfera" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Rifrattometro_di_Abbe&action=edit&section=3" title="Edit section's source code: Totalriflettometro a semisfera"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Per la misura diretta dell'indice di rifrazione di campioni trasparenti, liquidi o solidi, si utilizza il rifrattomentro a semisfera. </p><p>È costituito da una semisfera di <a href="/wiki/Vetro_Flint" title="Vetro Flint">Vetro Flint</a>, con indice di rifrazione n<sub>0</sub> attorno ad 1,89, sulla faccia piana della quale si appoggia il campione da misurare. Attraverso la semisfera, il campione viene illuminato da un raggio di luce monocromatica (tipicamente la riga D del sodio). Attraverso un oculare da <a href="/wiki/Microscopio" title="Microscopio">microscopio</a> montato su un supporto micrometrico, si legge l'<a href="/wiki/Angolo_limite" class="mw-redirect" title="Angolo limite">angolo limite</a> in corrispondenza del quale la luce, incidente dal basso, viene totalmente riflessa dalla superficie del campione in esame. Dall'angolo limite a si risale quindi all'indice di rifrazione n del campione in esame, secondo: n = n<sub>0</sub> * sen a </p> <div class="mw-heading mw-heading3"><h3 id="Vantaggi">Vantaggi</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rifrattometro_di_Abbe&veaction=edit&section=4" title="Modifica la sezione Vantaggi" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Rifrattometro_di_Abbe&action=edit&section=4" title="Edit section's source code: Vantaggi"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Consente la misura diretta dell'indice di rifrazione di campioni liquidi o solidi, anche anisotropi, che possono essere anche molto assorbenti.</li> <li>Nel caso di misura di liquidi, ne è sufficiente una goccia.</li> <li>Lavorando otticamente la faccia del campione solido in esame ed interponendo una goccia di liquido avente indice di rifrazione a<sub>L</sub> > n<sub>0</sub> (comunque possibilmente prossimo ad n<sub>0</sub>) questo rifrattometro può essere usato per misurare l'indice di rifrazione di solidi (nel caso di gemme già tagliate, l'esame è non distruttivo).</li> <li>La precisione di misura arriva alla 4ª cifra decimale<sup id="cite_ref-a_1-2" class="reference"><a href="#cite_note-a-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>.</li></ul> <div class="mw-heading mw-heading3"><h3 id="Svantaggi">Svantaggi</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rifrattometro_di_Abbe&veaction=edit&section=5" title="Modifica la sezione Svantaggi" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Rifrattometro_di_Abbe&action=edit&section=5" title="Edit section's source code: Svantaggi"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Il massimo indice di rifrazione misurabile è pari all'indice di rifrazione del materiale del quale è costituita la semisfera.</li> <li>La misura è limitata a liquidi non corrosivi, poiché il cristallo flint è facilmente intaccato da alcuni <a href="/wiki/Composto_chimico" title="Composto chimico">composti chimici</a> utilizzati nei liquidi ad alto indice di rifrazione.</li></ul> <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=Rifrattometro_di_Abbe&veaction=edit&section=6" 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=Rifrattometro_di_Abbe&action=edit&section=6" 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-a-1"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-a_1-0">a</a></i></sup> <sup><i><a href="#cite_ref-a_1-1">b</a></i></sup> <sup><i><a href="#cite_ref-a_1-2">c</a></i></sup></span> <span class="reference-text">* <cite class="citation libro" style="font-style:normal"> AAVV, <span style="font-style:italic;">Dizionario d'ingegneria</span>, U.T.E.T, 1954.</cite></span> </li> </ol></div> <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=Rifrattometro_di_Abbe&veaction=edit&section=7" 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=Rifrattometro_di_Abbe&action=edit&section=7" title="Edit section's source code: Altri progetti"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div id="interProject" class="toccolours" style="display: none; clear: both; margin-top: 2em"><p id="sisterProjects" style="background-color: #efefef; color: black; font-weight: bold; margin: 0"><span>Altri progetti</span></p><ul title="Collegamenti verso gli altri progetti Wikimedia"> <li class="" title=""><span class="plainlinks" title="commons:Category:Abbe refractometer"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Abbe_refractometer?uselang=it">Wikimedia Commons</a></span></li></ul></div> <ul><li><span typeof="mw:File"><a href="https://commons.wikimedia.org/wiki/?uselang=it" title="Collabora a Wikimedia Commons"><img alt="Collabora a Wikimedia Commons" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png" decoding="async" width="18" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/27px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/36px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> <span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/?uselang=it">Wikimedia Commons</a></span> contiene immagini o altri file su <b><span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Abbe_refractometer?uselang=it">Rifrattometro di Abbe</a></span></b></li></ul> <div class="mw-heading mw-heading2"><h2 id="Collegamenti_esterni">Collegamenti esterni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rifrattometro_di_Abbe&veaction=edit&section=8" title="Modifica la sezione Collegamenti esterni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Rifrattometro_di_Abbe&action=edit&section=8" title="Edit section's source code: Collegamenti esterni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>(<span style="font-weight:bolder; font-size:80%"><abbr title="tedesco">DE</abbr></span>) <a rel="nofollow" class="external text" href="http://www.musoptin.com/abbe_ref_2028.html">rifrattometro di Abbe</a> di Carl Zeiss del 1904</li> <li>(<span style="font-weight:bolder; font-size:80%"><abbr title="tedesco">DE</abbr></span>) <a rel="nofollow" class="external text" href="http://www.musoptin.com/abbe_ref_30264.html">rifrattometro di Abbe</a> di Carl Zeiss del 1928</li></ul> <div class="noprint" style="width:100%; padding: 3px 0; display: flex; flex-wrap: wrap; row-gap: 4px; column-gap: 8px; box-sizing: border-box;"><div style="flex-grow: 1"><style data-mw-deduplicate="TemplateStyles:r140555418">.mw-parser-output .itwiki-template-occhiello{width:100%;line-height:25px;border:1px solid #CCF;background-color:#F0EEFF;box-sizing:border-box}.mw-parser-output .itwiki-template-occhiello-progetto{background-color:#FAFAFA}@media screen{html.skin-theme-clientpref-night .mw-parser-output .itwiki-template-occhiello{background-color:#202122;border-color:#54595D}html.skin-theme-clientpref-night .mw-parser-output .itwiki-template-occhiello-progetto{background-color:#282929}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .itwiki-template-occhiello{background-color:#202122;border-color:#54595D}html.skin-theme-clientpref-os .mw-parser-output .itwiki-template-occhiello-progetto{background-color:#282929}}</style><div class="itwiki-template-occhiello"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Unbalanced_scales_simpler.svg" class="mw-file-description" title="Metrologia"><img alt=" " src="//upload.wikimedia.org/wikipedia/commons/thumb/1/17/Unbalanced_scales_simpler.svg/25px-Unbalanced_scales_simpler.svg.png" decoding="async" width="25" height="22" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/17/Unbalanced_scales_simpler.svg/38px-Unbalanced_scales_simpler.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/17/Unbalanced_scales_simpler.svg/50px-Unbalanced_scales_simpler.svg.png 2x" data-file-width="400" data-file-height="354" /></a></span> <b><a href="/wiki/Portale:Metrologia" title="Portale:Metrologia">Portale Metrologia</a></b>: accedi alle voci di Wikipedia che trattano di metrologia</div></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; 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