{"id":8610,"date":"2011-05-09T03:00:40","date_gmt":"2011-05-09T08:00:40","guid":{"rendered":"http:\/\/blogs.scienceforums.net\/swansont\/?p=8610"},"modified":"2011-05-09T03:00:40","modified_gmt":"2011-05-09T08:00:40","slug":"theyre-all-named-bob","status":"publish","type":"post","link":"http:\/\/blogs.scienceforums.net\/swansont\/archives\/8610","title":{"rendered":"They&#039;re All Named Bob"},"content":{"rendered":"<p><object class=\"embed\" width=\"425\" height=\"264\" type=\"application\/x-shockwave-flash\" \ndata=\"http:\/\/www.youtube.com\/v\/1Y-YscjytZ0?fs=1\"><param name=\"wmode\" value=\"transparent\" \/><param name=\"movie\" value=\"http:\/\/www.youtube.com\/v\/1Y-YscjytZ0?fs=1\" \/><em>You need to a flashplayer enabled browser to view this YouTube video<\/em><\/object><\/p>\n<p>Here&#8217;s a pendulum demonstration that was part of an Exploratorium exhibit in the atrium of the Hyatt where I was attending a frequency &amp; timing conference this past week.  The bobs all start off in phase but since the period (or frequency) of a pendulum depends on \\(sqrt{L} \\) (or its inverse), the relative phases rapidly diverge.  The bobs occasionally hit a condition that looks less chaotic, such as the slightly-out-of-phase S shape, and the condition where alternate bobs are 180\u00ba out of phase.  They then go back to the &#8220;S&#8221; before briefly all being in phase again.  That occurs when they have all undergone an integral number of oscillations, with each one having undergone one more cycle as its neighbor as you move from the front to the back (long to short)<\/p>\n<p><a href=\"http:\/\/www.youtube.com\/watch?v=yVkdfJ9PkRQ\">Here&#8217;s another video<\/a>, via <a href=\"http:\/\/twitter.com\/#!\/JenLucPiquant\/status\/67276452193779712\">@JenLucPiquant <\/a> with even more bobs.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>You need to a flashplayer enabled browser to view this YouTube video Here&#8217;s a pendulum demonstration that was part of an Exploratorium exhibit in the atrium of the Hyatt where I was attending a frequency &amp; timing conference this past &hellip; <a href=\"http:\/\/blogs.scienceforums.net\/swansont\/archives\/8610\">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":[39,63],"tags":[],"class_list":["post-8610","post","type-post","status-publish","format-standard","hentry","category-physics","category-video"],"_links":{"self":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/8610","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=8610"}],"version-history":[{"count":0,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/8610\/revisions"}],"wp:attachment":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/media?parent=8610"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/categories?post=8610"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/tags?post=8610"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}