The History of the Slinky

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Mechanical engineer Richard James was trying to develop a new tension spring that could keep a ship’s equipment secure while the vessel rocked at sea. One day he accidentally knocked a spring off his worktable. The spring tumbled to the floor, landing on one of its ends, but instead of jumping back up, the spring flopped end over end, walking across the floor… More at PM.

Now you wouldn’t expect the story to be quite that involved…

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