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Rattleback
Rattleback

Rattleback
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4771200
470146-171PK 10 CAD
470146-171
Rattleback
Puzzling and fun to watch.

  • Demonstrate Newton’s three laws of motion with the flick of a finger!
  • The Rattleback has been written about in Scientific American
  • Pack of two
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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