Item #82386

Learn about the wonders of physics by simply spinning this amazing rattleback.

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This ancient toy can reverse direction while spinning. When spun in its preferred direction, the rattleback will rotate on its axis but when spun in the opposite direction, it will wobble to a stop and begin spinning in its preferred direction.

Discovered by archaeologists years ago, rattlebacks are also known as wobble stones or celt stones.

You will receive a single rattleback in an assorted color.
Astronomy Discover