{"id":143114,"date":"2015-11-10T03:00:00","date_gmt":"2015-11-10T00:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=6e67cdb6754c128baf34cdd700ad4e9c"},"modified":"2015-11-10T03:00:00","modified_gmt":"2015-11-10T00:00:00","slug":"the-atmospheric-extinction-of-light","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=143114","title":{"rendered":"The atmospheric extinction of light"},"content":{"rendered":"<p>An experiment is described that enables students to understand the properties of atmospheric<br \/>\nextinction due to Rayleigh scattering. The experiment requires the use of red, green and blue lasers<br \/>\nattached to a travelling microscope or similar device. The laser beams are passed through an<br \/>\nartificial atmosphere, made from milky water, at varying depths, before impinging on either a light<br \/>\nmeter or a photodiode integral to a Picotech Dr. DAQ ADC. A plot of measured spectral intensity<br \/>\nverses depth reveals the contribution Rayleigh scattering has to the extinction coefficient. For the<br \/>\nexperiment with the light meter, the extinction coefficients for red, green and blue light in the<br \/>\nmilky sample of water were 0.27, 0.36 and 0.47 cm \u22121 respectively and 0.032, 0.037 and 0.092 cm \u22121<br \/>\nfor the Picotech Dr. DAQ ADC.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An experiment is described that enables students to understand the properties of atmospheric<br \/>\nextinction due to Rayleigh scattering. The experiment requires the use of red, green and blue lasers<br \/>\nattached to a travelling microscope or similar device. T&#8230;<\/p>\n","protected":false},"author":0,"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-143114","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\/143114","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"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=143114"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/143114\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=143114"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=143114"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=143114"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}