{"id":754,"date":"2008-09-07T04:59:59","date_gmt":"2008-09-07T09:59:59","guid":{"rendered":"http:\/\/blogs.scienceforums.net\/swansont\/?p=754"},"modified":"2008-09-07T04:59:59","modified_gmt":"2008-09-07T09:59:59","slug":"stress-makes-them-bi","status":"publish","type":"post","link":"http:\/\/blogs.scienceforums.net\/swansont\/archives\/754","title":{"rendered":"Stress Makes Them Bi"},"content":{"rendered":"

Birefringent. Not that there’s anything wrong with that.<\/p>\n

In my earlier discussion of polarization<\/a>, I promised some photos of stress-induced birefringence.<\/p>\n

If you have a polarizing filter, you can use an LCD as a polarized light source and view birefringent materials using it as a backdrop. Make the screen as white as possible, and rotate the polarizer until it blocks the light. Then place a birefringent material in front of the screen and look through the polarizer. Cheap clear plastic often will have stress-induced birefringence.<\/p><\/blockquote>\n

Which is what I did, and is why the background is black. The first photo is the plastic box in which the polarizers were packaged<\/p>\n

\"\"<\/a><\/p>\n

These next two are the side and top views of a styrene drawer from a small storage cabinet, placed on top of an empty CD spindle.<\/p>\n

\"\"<\/a>
\n\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Birefringent. Not that there’s anything wrong with that. In my earlier discussion of polarization, I promised some photos of stress-induced birefringence. If you have a polarizing filter, you can use an LCD as a polarized light source and view birefringent … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,38,39],"tags":[118,377,378,392,473],"class_list":["post-754","post","type-post","status-publish","format-standard","hentry","category-art","category-photos","category-physics","tag-birefringence","tag-photos","tag-physics","tag-polarization","tag-stress-induced-birefringence"],"_links":{"self":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/754","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/comments?post=754"}],"version-history":[{"count":0,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/754\/revisions"}],"wp:attachment":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/media?parent=754"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/categories?post=754"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/tags?post=754"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}