{"id":640,"date":"2008-08-09T07:36:05","date_gmt":"2008-08-09T12:36:05","guid":{"rendered":"http:\/\/blogs.scienceforums.net\/swansont\/?p=640"},"modified":"2008-08-09T07:36:05","modified_gmt":"2008-08-09T12:36:05","slug":"the-other-manhole-cover","status":"publish","type":"post","link":"http:\/\/blogs.scienceforums.net\/swansont\/archives\/640","title":{"rendered":"The Other Manhole Cover"},"content":{"rendered":"<p><a href=\"http:\/\/linearlyindependent.blogspot.com\/2008\/07\/drilling-square-holes.html\">Drilling Square Holes<\/a> at Linearly Independent.  All about the Reuleaux triangle and rotations thereof.<\/p>\n<blockquote><p>[I]t has the same maximum width regardless of how it is rotated. this property was thought to be only possessed by circles once and yet here&#8217;s a simple and apt counter example.<\/p>\n<p>Constant width shapes can make great manhole covers, as no orientation of the cover will let it fall through the manhole. A few years ago Microsoft interviewers asked job applicants why manhole covers were round and this was thought to be one of the best answers.<br \/>\nAnother more important property of constant width shapes is that they can rotate inside parallel lines.<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Drilling Square Holes at Linearly Independent. All about the Reuleaux triangle and rotations thereof. [I]t has the same maximum width regardless of how it is rotated. this property was thought to be only possessed by circles once and yet here&#8217;s &hellip; <a href=\"http:\/\/blogs.scienceforums.net\/swansont\/archives\/640\">Continue reading <span class=\"meta-nav\">&rarr;<\/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":[28,53],"tags":[],"class_list":["post-640","post","type-post","status-publish","format-standard","hentry","category-math","category-tech"],"_links":{"self":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/640","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=640"}],"version-history":[{"count":0,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/640\/revisions"}],"wp:attachment":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/media?parent=640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/categories?post=640"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/tags?post=640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}