{"id":283083,"date":"2016-09-22T02:00:00","date_gmt":"2016-09-21T23:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=b538bb0e61c7f54dafd5df8ecfae706d"},"modified":"2016-09-22T02:00:00","modified_gmt":"2016-09-21T23:00:00","slug":"software-for-teaching-refraction-of-light-with-the-semicircle","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=283083","title":{"rendered":"Software for teaching refraction of light with the semicircle"},"content":{"rendered":"<p>Software is presented for teaching elementary optics using a transparent semicircle. We demonstrate<br \/>\nthe use of the semicircle to investigate Snell\u2019s lawand students can are presented with the<br \/>\ndifficulties involved in experiments. An Excel spreadsheet can show to students that small errors in<br \/>\npositioning of the semicircle can result in a non-constant index of refraction. Students can study<br \/>\nthe effect of changing some of the parameters of placement of a semicircle on the accuracy of the<br \/>\nexperimental results. They can see from the analysis of data that much better results are obtained<br \/>\nby doing regression analysis rather than by just taking the average value of the index of<br \/>\nrefraction. Measuring the critical angle also gives a method of calculating the index of refraction.<br \/>\nAnother way to measure the index of refraction is the use of the semicircle as a lens and from its<br \/>\nfocal length we can deduce the index of refraction.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Software is presented for teaching elementary optics using a transparent semicircle. We demonstrate<br \/>\nthe use of the semicircle to investigate Snell\u2019s lawand students can are presented with the<br \/>\ndifficulties involved in experiments. An Excel spreadshe&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[178],"tags":[],"class_list":{"0":"post-283083","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-fuusikaharidus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/283083","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=283083"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/283083\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=283083"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=283083"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=283083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}