Maxwell's Wheel (1886) Used for demonstrating momentum, conservation of energy and torque. This unit which is basically a large flywheel is suspended by two strong cords. These cords are wound around the shaft of the wheel and then released. The wheel will unwind as it falls but will wind itself back up as the momentum carries the wheel upward in the opposite direction. This oscillation process will continue for several moments as the wheel slowly lose momentums and travels less each time. Qty :