Can you explain this? WITHOUT going to Wikipedia? I've got my own explanation, but I'm curious about what you think.
A summary of all your theories will be posted soon.
Saturday, January 17, 2009
Exception to Newton's Laws? Crazy Spinning Celt
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2 comments:
Hmm, I don't claim to understand this entirely, but I think the odd geometry (and maybe weight-loading?) of the celt gives it an unusually close set of two principal rotational axes. If it's not rotated exactly along the principal axis, and it's rotated in the "resistant" dirction, some of the energy gets transferred into the other axis, which basically shows up as vibration. Then some of this motion along the secondary axis gets transferred back to the primary, in the other direction.
They have it on ebay
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