PURPOSE: To demonstrate the Feynman rubber band engine.
DESCRIPTION: Rubber bands form the spokes of a well-balanced wheel. When heated, the rubber bands contract, moving the center of mass of the wheel so that it is out of balance, causing the wheel to rotate.
REFERENCES: (PIRA 4F30.70) See Demonstration Reference File for further information.
EQUIPMENT: Rubber band engine (rotor in refrigerator), variac and heater.
SETUP TIME: None.
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