{"id":1030,"date":"2022-01-17T09:21:22","date_gmt":"2022-01-17T08:21:22","guid":{"rendered":"https:\/\/mxth.dk\/?page_id=1030"},"modified":"2023-08-23T20:28:57","modified_gmt":"2023-08-23T18:28:57","slug":"forsoeg","status":"publish","type":"page","link":"https:\/\/mxth.dk\/?page_id=1030","title":{"rendered":"F16 – bestemmelse af rilleafstanden p\u00e5 en CD"},"content":{"rendered":"
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Bestemmelse af rilleafstanden p\u00e5 en CD<\/p>\n<\/div><\/div>\n\n\n

Photo by Vinicius “amnx” Amano<\/a> on Unsplash<\/a><\/p>\n\n\n\n

Vi kan nu benytte vores viden om diffraktion til at bestemme rilleaftanden p\u00e5 en CD. En laserstr\u00e5le sendes ind mod en CD som derved reflekteres i et interferensm\u00f8nster.<\/p>\n\n\n\n

Vi kan derved benytte gitterformlen<\/p>\n\n\n\n

\"sin(\theta_n)=\frac{n\cdot\lambda}{d}\"<\/p>\n\n\n\n

til at bestemme rilleafstanden d<\/em>. Vi kender til b\u00f8lgel\u00e6ngden fra laseren som vi bestemte sidst. udfyld nedenst\u00e5ende skema, hvor \"x_n\" er afstanden fra centerpletten til n’te ordenspletten. De to v\u00e6rdier for \"x_n\" skal i teorien v\u00e6re ens s\u00e5 s\u00f8rg for at f\u00e5 m\u00e5lt p\u00e5 begge sider af centerpletten n\u00e5r I laver opstillingen. Herefter s\u00e5 tages gennemsnittet af de to m\u00e5linger for yderligere at minimere fejl.<\/p>\n\n\n\n

M\u00e5l b\u00e5de for 1.-orden og 2.-orden.<\/p>\n\n\n

Afstand a(m) <\/th> Orden n <\/th> \"x_n\" (m) <\/th> \"\theta_n\" (grader) <\/th> d (m) <\/th><\/tr><\/thead>
<\/td>1<\/td><\/td><\/td><\/td><\/tr>
<\/td>1<\/td><\/td><\/td><\/td><\/tr>
<\/td>2<\/td><\/td><\/td><\/td><\/tr>
<\/td>2<\/td><\/td><\/td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n

Hvis man gerne vil finde en tabelv\u00e6rdi for rilleafstanden p\u00e5 en CD kan man pr\u00f8ve her<\/a>. Man skal dog v\u00e6re opm\u00e6rksom p\u00e5 at rilleafstanden kan varierer fra fabrikant til fabrikant.<\/p>\n","protected":false},"excerpt":{"rendered":"

Vi kan nu benytte vores viden om diffraktion til at bestemme rilleaftanden p\u00e5 en CD. En laserstr\u00e5le sendes ind mod en CD som derved reflekteres i et interferensm\u00f8nster.<\/p>\n","protected":false},"author":1,"featured_media":1031,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ub_ctt_via":"","editor_plus_copied_stylings":"{}","footnotes":""},"categories":[27,2],"tags":[],"class_list":["post-1030","page","type-page","status-publish","has-post-thumbnail","hentry","category-forsoeg","category-fysik"],"featured_image_src":"https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2022\/01\/vinicius-amnx-amano-mmDVuWCRiFQ-unsplash.jpg?fit=2398%2C2398&ssl=1","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/pages\/1030","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=1030"}],"version-history":[{"count":13,"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/pages\/1030\/revisions"}],"predecessor-version":[{"id":2583,"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/pages\/1030\/revisions\/2583"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/media\/1031"}],"wp:attachment":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1030"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1030"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1030"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}