An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Motion in which an object moves in a circle at a constant speed. The velocity, however, changes not because the magnitude of the velocity changes, but because its direction changes. The changing velocity creates an acceleration, called → centripetal acceleration. This acceleration results from the → centripetal force.

→ circular; → motion.

The motion of an object around a fixed point at a constant angular speed, and at constant radius.

→ uniform; → circular; → motion.