| − | A '''rotation''' is a movement of an object along a [[circle|circular]] [[axis]]. The amount of rotation is given in [[degree]]s or [[radian]]s, and the force that moves the object is known as [[torque]]. A rotation of 360 degrees is known as a [[revolution]]. | + | A '''rotation''' is a movement of an object along a [[circle|circular]] [[axis]]. An amount of rotation is given in [[degree]]s or [[radian]]s. A rotation of 360 degrees, which brings an object to its initial orientations, is known as a [[revolution]]. |