The Exploratorium in SF has one of these you can play with. Show up at their mon... | Hacker News

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impendia on Aug 27, 2011 | parent | context | favorite | on: 15 uncoupled simple pendulums of increasing length...

The Exploratorium in SF has one of these you can play with. Show up at their monthly "After Dark" and you won't have to compete with the kiddos.

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