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Optix & Reflection
Rattle Back
Rattle Back
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Rattle Back |
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SKU:
002130 |
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Price:
$8.99
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spin the Rattleback in a clockwise direction and it rattles and resists the spin, stops and reverses direction. Spin it counter-clockwise and it spins freely. Why? Prove the corialis effect of the spinning of the earth with this simple toy that works on the same principal of why the water in your bathtub drain and storms rotate counter-clockwise in the northern hemisphere! |
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