Gyroscope

特許 権利維持 A gyroscope (from Greek γῦρος gûros, "circle" and σκοπέω skopéō, "to look") is a device for measuring or maintaining orientation, based on the principles of angular momentum.[1] Mechanical gyroscopes typically comprise a spinning wheel or disc in which the axle is free to assume any orientation. Although the orientation of the spin axis changes in response to an external torque, the amount of change and the direction of the change is less and in a different direction than it would be if the disk were not spinning.