Gyroscope
A gyroscope is a device used to measure or maintain an angular position. It works using the principles of angular momentum. The gyroscope is made up of a spinning wheel or disc, as well as (in some cases) many other moving parts. It helps with navigation, and plays a part in such things as a gyrocompass and artificial horizon.
Gyroscope Media
A gyroscope in operation, showing the freedom of rotation in all three axes. The rotor will maintain its spin axis direction regardless of the orientation of the outer frame.
Diagram of a gyro wheel. Reaction arrows about the output axis (blue) correspond to forces applied about the input axis (green), and vice versa.
Animation of a gyro wheel in action
Gyroscope designed by Léon Foucault in 1852. Replica built by Dumoulin-Froment for the Exposition universelle in 1867. National Conservatory of Arts and Crafts museum, Paris.
A digital gyroscope module connected to an Arduino Uno board
