{"id":279981,"date":"2016-09-15T02:00:00","date_gmt":"2016-09-14T23:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=44605a03144c808f2a0c787a9a343048"},"modified":"2016-09-15T02:00:00","modified_gmt":"2016-09-14T23:00:00","slug":"two-different-looks-at-keplers-refraction-experiment-2","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=279981","title":{"rendered":"Two different looks at Kepler?s refraction experiment"},"content":{"rendered":"<p>Most refraction experiments are theory-laden and far from everyday experience. Accordingly, many<br \/>\nstudents fail to apply the law of refraction to phenomena. To guide students from phenomena to<br \/>\ntheory, teachers can use a refraction experiment proposed by Kepler, where measurements are based on<br \/>\nshadow images. For a different look at Kepler?s experiment, one can use the principle of<br \/>\nreversibility to get equivalent results, but based on apparent depth. For this reversal, rays of<br \/>\nlight are reinterpreted as lines of sight, and vice versa. The principle allows students to relate<br \/>\nrefracted rays to shifted images, and applies to other optical phenomena.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Most refraction experiments are theory-laden and far from everyday experience. Accordingly, many<br \/>\nstudents fail to apply the law of refraction to phenomena. To guide students from phenomena to<br \/>\ntheory, teachers can use a refraction experiment proposed &#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-279981","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\/279981","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=279981"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/279981\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=279981"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=279981"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=279981"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}