telgsümmeetriline jäik keha, mis kiiresti pöörleb ümber telje
spinning wheel or disc in which the axis of rotation is free to assume any orientation by itself
Good to know
When rotating, the orientation of this axis is unaffected by tilting or rotation of the mounting, according to the conservation of angular momentum. Because of this, gyroscopes are useful for measuring or maintaining orientation.
Three gyroscopes rotating about perpendicular axes help to maintain the orientation of a spacecraft in space by detecting rotation about any of the axes and initiating a mechanism to correct it.
