Tuesday, December 29, 2015

A Wedding Ring Spins More Like a Boomerang Than a Coin  

Spin a coin on a flat surface, and it spirals much like a planet orbiting a star — at least until it runs out of steam and rattles to a stop on the table. But spin a wedding ring the same way, and it will make a surprising abrupt turn, following a trajectory more like a boomerang.


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A Wedding Ring Spins More Like a Boomerang Than a Coin  

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