Rattleback | Science Kit

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November 23, 2008

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Home :: Rattleback

Rattleback

Demonstrate Newton’s three laws of motion with the flick of a finger!
Due to its offset center of gravity this scientific curiosity has a preferred direction of rotation – it wants to spin counterclockwise. Its spin bias is so strong that when it is spun clockwise, it will turn through a few rotations, stop, “rattle” (or rock up and down on its long axis), then automatically reverse itself and spin counterclockwise.

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