Gyroscope

A Gyroscope is a device which demonstrates the principle of conservation of angular momentum. The essence of the device is a spinning wheel on an axle. The device once spinning tends to resist changes to its orientation.

A gyroscope exhibits a number of behaviours including Precession. Gyroscopes can be used to replace magnetic compasses, to assist in stability (Bicycle) and as a means to conserve and deliver energy in some rotating machines. The flywheel in an engine is one such use.