# Angular Velocity

In physics, the angular velocity is defined as the rate of change of angular displacement and is a vector quantity (more precisely, a pseudovector) which specifies the angular speed (rotational speed) of an object and the axis about which the object is rotating. The SI unit of angular velocity is radians per second, although it may be measured in other units such as degrees per second, degrees per hour, etc. Angular velocity is usually represented by the symbol omega (ω, rarely Ω).

The direction of the angular velocity vector is perpendicular to the plane of rotation, in a direction which is usually specified by the right-hand rule.

Read more about Angular VelocityRotating Frames, Rigid Body Considerations

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

Herpolhode
... A herpolhode is the curve traced out by the endpoint of the angular velocity vector ω of a rigid rotor, a rotating rigid body ... The endpoint of the angular velocity moves in a plane in absolute space, called the invariable plane, that is orthogonal to the angular momentum vector L ... The trajectory of the angular velocity around the angular momentum in the invariable plane is a circle in the case of a symmetric top, but it the ...
Stellar Rotation - Physical Effects - Differential Rotation
... Surface differential rotation is observed on stars such as the Sun when the angular velocity varies with latitude ... Typically the angular velocity decreases with increasing latitude ... This mass of plasma carries a portion of the angular velocity of the star ...
Angular Velocity - Rigid Body Considerations - Consistency
... We should prove that the angular velocity previously defined is independent from the choice of origin, which means that the angular velocity is an intrinsic property of the spinning rigid body ... while O1 and O2 are two fixed points on the rigid body, whose velocity is and respectively ... Suppose the angular velocity with respect to O1 and O2 is and respectively ...
Polhode
... The details of a spinning body may impose restrictions on the motion of its angular velocity vector, ω ... The curve produced by the angular velocity vector on the inertia ellipsoid, is known as the polhode, coined from Greek meaning "path of the pole" ... The surface created by the angular velocity vector is termed the body cone ...
Eötvös Effect - Physical Explanation - Derivation of The Formula For Simplified Case
... being stationary with respect to the Earth and having a velocity with respect to the Earth ... is the angular velocity of the Earth one revolution per Sidereal day ... is the angular velocity of the airship relative to the angular velocity of the Earth ...