{"id":2988,"date":"2024-02-01T12:19:36","date_gmt":"2024-02-01T11:19:36","guid":{"rendered":"https:\/\/mxth.dk\/?page_id=2988"},"modified":"2024-02-01T12:19:38","modified_gmt":"2024-02-01T11:19:38","slug":"refraktometer","status":"publish","type":"page","link":"https:\/\/mxth.dk\/?page_id=2988","title":{"rendered":"Refraktometer"},"content":{"rendered":"\n<figure class=\" wp-block-image size-large eplus-wrapper\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"613\" src=\"https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2024\/02\/IMG_0615.jpeg?resize=1024%2C613&#038;ssl=1\" alt=\"\" class=\"wp-image-2989\" srcset=\"https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2024\/02\/IMG_0615-scaled.jpeg?resize=1024%2C613&amp;ssl=1 1024w, https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2024\/02\/IMG_0615-scaled.jpeg?resize=300%2C179&amp;ssl=1 300w, https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2024\/02\/IMG_0615-scaled.jpeg?resize=768%2C459&amp;ssl=1 768w, https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2024\/02\/IMG_0615-scaled.jpeg?resize=1536%2C919&amp;ssl=1 1536w, https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2024\/02\/IMG_0615-scaled.jpeg?resize=2048%2C1225&amp;ssl=1 2048w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n<p class=\" has-text-align-right eplus-wrapper eplus-styles-uid-d40751\">Foto af <a href=\"https:\/\/commons.wikimedia.org\/wiki\/User:Jacek_Halicki\" data-type=\"link\" data-id=\"https:\/\/commons.wikimedia.org\/wiki\/User:Jacek_Halicki\">Jacek Halicki<\/a> p\u00e5 <a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:2020_Refraktometr.jpg\" data-type=\"link\" data-id=\"https:\/\/commons.wikimedia.org\/wiki\/File:2020_Refraktometr.jpg\">Wikipedia<\/a><\/p>\n\n\n<p class=\" has-text-align-left eplus-wrapper\">Blandingsforholdet for k\u00f8lerv\u00e6sken p\u00e5 en bil kan bestemmes ved et refraktometer. Et givent blandingsforhold giver en bestemt brydningsindeks. Brydningsindekset for k\u00f8lerv\u00e6ske ligger ofte mellem 1,11 og 1,30.<\/p>\n\n\n\n<p class=\" has-text-align-left eplus-wrapper\">Til at bestemme brydningsindekset, og derved blandingsforholdet, benyttes en laser. Til at bestemme laserens b\u00f8lgel\u00e6ngde sendes den igennem et optisk gitter som er placeret 1,35 m fra en sk\u00e6rm, hvorved der p\u00e5 sk\u00e6rmen opst\u00e5r et interferensm\u00f8nster n\u00e5r laseren lyser igennem det optiske gitter. Det optiske gitter har 600 spalter pr mm.<\/p>\n\n\n<ol class=\"eplus-wrapper wp-block-list eplus-styles-uid-61f7ad\">\n<li class=\" eplus-wrapper\">Bestem gitterkonstanten.<\/li>\n<\/ol>\n\n\n<p class=\" eplus-wrapper\">Der m\u00e5les en afstand fra centerpletten og ud til anden ordens pletten p\u00e5 1,107 m.<\/p>\n\n\n<ol start=\"2\" class=\"ep-custom-list eplus-wrapper wp-block-list eplus-styles-uid-3c5f49\">\n<li class=\" eplus-wrapper\">Bestem b\u00f8lgel\u00e6ngden for laseren.<\/li>\n<\/ol>\n\n\n<p class=\" eplus-wrapper\">Laserlyset sendes ind i refraktometeret, hvis prisme har et brydningsindeks p\u00e5 1,47. Ved overgangen mellem prisme og v\u00e6sken opst\u00e5r der refleksion ved en indfaldsvinkel p\u00e5 .<\/p>\n\n\n<ol start=\"3\" class=\"eplus-wrapper wp-block-list eplus-styles-uid-5c767e\">\n<li class=\" eplus-wrapper\">Tegn en skitse af situationen<\/li>\n<\/ol>\n\n\n<p class=\" eplus-wrapper\">Den kritiske vinkel er 56,7\\(^\\circ\\).<\/p>\n\n\n<ol start=\"4\" class=\"eplus-wrapper wp-block-list eplus-styles-uid-e6f396\">\n<li class=\" eplus-wrapper\">Bestem brydningsindekset af v\u00e6sken.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>Foto af Jacek Halicki p\u00e5 Wikipedia Blandingsforholdet for k\u00f8lerv\u00e6sken p\u00e5 en bil kan bestemmes ved et refraktometer. Et givent blandingsforhold giver en bestemt brydningsindeks. Brydningsindekset for k\u00f8lerv\u00e6ske ligger ofte mellem 1,11 og 1,30. Til at bestemme brydningsindekset, og derved blandingsforholdet, benyttes en laser. Til at bestemme laserens b\u00f8lgel\u00e6ngde sendes den igennem et optisk gitter som [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ub_ctt_via":"","editor_plus_copied_stylings":"{}","footnotes":""},"categories":[],"tags":[],"class_list":["post-2988","page","type-page","status-publish","hentry"],"featured_image_src":null,"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/pages\/2988","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2988"}],"version-history":[{"count":1,"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/pages\/2988\/revisions"}],"predecessor-version":[{"id":2990,"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/pages\/2988\/revisions\/2990"}],"wp:attachment":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2988"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2988"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2988"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}