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.

One revolution is equal to 2π radians, hence

where

*ω*is the angular frequency or angular speed (measured in radians per second),*T*is the period (measured in seconds),*f*is the ordinary frequency (measured in hertz) (sometimes symbolised with ν),*v*is the tangential speed of a point about the axis of rotation (measured in meters per second),*r*is the radius of rotation (measured in meters).

Read more about Angular Frequency: Units

### Other articles related to "angular frequency, frequency":

**Angular Frequency**

... The Planck

**angular frequency**is the unit of

**angular frequency**, denoted by ωP, in the system of natural units known as Planck units ...

... At an Earth-fixed location, the observed

**angular frequency**(or absolute

**angular frequency**) is ω ... the mean velocity U (so the mean velocity as observed from this reference frame is zero), the

**angular frequency**is different ... It is called the intrinsic

**angular frequency**(or relative

**angular frequency**), denoted as σ ...

**Angular Frequency**- Units - LC Circuits

... The resonant

**angular frequency**in an LC circuit equals the square root of the inverse of capacitance (C measured in farads), times the inductance of the circuit (L in henrys) ...

... of light and the index of refraction of the medium at

**angular frequency**... Thus, the second-order polarization at

**angular frequency**is At each position within the nonlinear medium, the oscillating second-order polarization radiates at ... However, other conventions exist that specify further which

**frequency**has what polarization relative to the crystal axis ...

... The Fourier transform can also be written in terms of

**angular frequency**ω = 2πξ whose units are radians per second ... popular forms of the Fourier transform ordinary

**frequency**ξ (hertz) unitary

**angular frequency**ω (rad/s) non-unitary unitary As discussed above ... As in the case of the "non-unitary

**angular frequency**" convention above, there is no factor of 2π appearing in either of the integral, or in the exponential ...

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—Rebecca West (1892–1983)