A phenomenal physical curiosity! A semi-ellipsoidal top that spins in only one direction, seeming to violate the angular-momentum conservation law of physics. Exciting and mysterious.
For Ages 5 +
A phenomenal physical curiosity! A semi-ellipsoidal top that spins in only one direction, seeming to violate the angular-momentum conservation law of physics. Exciting and mysterious.
For Ages 5 +