Copernicus Toys Rattleback - Compact Curiosities
$5.03
Sale price
$5.03
Regular price
$6.99
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Copernicus Toys Rattleback - Compact Curiosities
$5.03
Sale price
$5.03
Regular price
$6.99
A phenomenal physical curiosity! A semi-ellipsoidal top that spins in only one direction, seems to violate the angular-momentum conservation law of physics.
Exciting and mysterious.