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One Way Paper

  1. May 4, 2007 #1
    I came across this piece of origami a while back and was wondering about the physics behind it. When dropped, it always lands face up. http://youtube.com/watch?v=_ZszGCK4R54" Can the same principle be applied to a playing card (I'm a magician). :grumpy:
    Last edited by a moderator: Apr 22, 2017
  2. jcsd
  3. May 4, 2007 #2
    The origami works best when the three "points" are crimped so as to be asymmetric; then it is very unstable when it is "upside-down", either way it will be totally stable when it is "face-up".

    It is more difficult to do this with a playing card, because you have to crip all four corners in an asymmetric way.
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