Thursday, January 3, 2013

perpetual motion

mostly fake --> http://www.youtube.com/watch?feature=player_embedded&v=287qd4uI7-E

davinci design http://www.youtube.com/watch?v=r66E6QLsMLg

http://www.youtube.com/watch?feature=player_embedded&v=usBFNJSiU1g
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