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Physics of the slinky

11/26/2012

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If you've played with a Slinky for more than five minutes, you've probably mastered all the classic moves. But it turns out those humble coils have a surprise up their sleeves. Do this:

1) Dangle a Slinky above the ground as though you were holding a fish by the tip of its tail.

2) Let it extend to its full length.

3) Let go.

For a fraction of a second, something amazing happens: the bottom of slinky hovers in midair, seeming to defy the laws of physics, while the top collapses toward it.


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