出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/05/22 23:07 UTC 版)
In physics, angular frequency ω (also referred to by the terms angular speed, radial frequency, circular frequency, orbital frequency, and radian frequency) is a scalar measure of rotation rate. Angular frequency (or angular speed) is the magnitude of the vector quantity angular velocity. The term angular frequency vector
is sometimes used as a synonym for the vector quantity angular velocity.