{"id":1036,"date":"2008-11-24T05:07:58","date_gmt":"2008-11-24T10:07:58","guid":{"rendered":"http:\/\/blogs.scienceforums.net\/swansont\/?p=1036"},"modified":"2008-11-24T05:07:58","modified_gmt":"2008-11-24T10:07:58","slug":"the-billy-preston-effect","status":"publish","type":"post","link":"http:\/\/blogs.scienceforums.net\/swansont\/archives\/1036","title":{"rendered":"The Billy Preston Effect"},"content":{"rendered":"<p>Will it Go &#8216;Round in Circles?<\/p>\n<p>Building The Amazing Steam Candle<\/p>\n<p><object class=\"embed\" width=\"425\" height=\"264\" type=\"application\/x-shockwave-flash\" \ndata=\"http:\/\/www.youtube.com\/v\/IuYGNn0awMo?fs=1\"><param name=\"wmode\" value=\"transparent\" \/><param name=\"movie\" value=\"http:\/\/www.youtube.com\/v\/IuYGNn0awMo?fs=1\" \/><em>You need to a flashplayer enabled browser to view this YouTube video<\/em><\/object><\/p>\n<p>This is a variant of the <a href=\"http:\/\/www.nmia.com\/~vrbass\/pop-pop\/\">pop-pop engine<\/a> \u2014 if you point the tubes parallel rater than in opposite directions, you&#8217;ll get linear propulsion.<\/p>\n<p>At first glance you might think this couldn&#8217;t work.  Once you hit steady-state, the rate at which water enters and exits the tube has to be equal.  Inside the tubes, that means that the momenta must be equal in magnitude, but opposite in direction, meaning no net momentum for the water, and no propulsion for the boat.  The effect is a little more subtle \u2014 one has to consider what happens at the entrance to the tube.  The water exiting will have its velocity vector along the direction of the tube.  But the incoming water is drawn from different directions; it only has to have a component of its velocity in the direction of the tube, meaning the ejected water exerts a greater force.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Will it Go &#8216;Round in Circles? Building The Amazing Steam Candle You need to a flashplayer enabled browser to view this YouTube video This is a variant of the pop-pop engine \u2014 if you point the tubes parallel rater than &hellip; <a href=\"http:\/\/blogs.scienceforums.net\/swansont\/archives\/1036\">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":[14,17,39,63],"tags":[184,468],"class_list":["post-1036","post","type-post","status-publish","format-standard","hentry","category-diy-science","category-experiments","category-physics","category-video","tag-diy-science","tag-steam-candle"],"_links":{"self":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/1036","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=1036"}],"version-history":[{"count":0,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/1036\/revisions"}],"wp:attachment":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/media?parent=1036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/categories?post=1036"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/tags?post=1036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}