rate of rotation

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• Rotation period — The rotation period of an astronomical object is the time it takes to complete one revolution around its axis of rotation relative to the background stars. It differs from the planet s solar day, which includes an extra fractional rotation needed …   Wikipedia

• Rotation around a fixed axis — Rotational motion can occur around more than one axis at once, and can involve phenomena such as wobbling and precession. Rotation around a fixed axis is a special case of rotational motion, which does not involve those phenomena. The kinematics… …   Wikipedia

• rate gyro — A gyro having one plane of freedom at right angles to the plane of rotation and constructed so that a calibrated spring opposes the precessive forces to indicate the rate of rotation about the plane at right angles to both the plane of rotation… …   Aviation dictionary

• Rotation-powered pulsar — is one of the major classes of pulsars. A Rotation powered pulsar is a rapidly rotating neutron star, whose electromagnetic radiation is observed in regularly spaced intervals, or pulses . It differs from other types of pulsars in that the source …   Wikipedia

• Rotation — This article is about movement of a physical body. For other uses, see Rotation (disambiguation). A polyhedron resembling a sphere rotating around an axis. A rotation is a circular movement of an object around a center (or point) of rotation. A… …   Wikipedia

• Rate integrating gyroscope — A Rate integrating gyroscope is a rate gyro with a built in integrator. It is usually a component of an Inertial Measurement Unit or a stabilization system.Principle of operationIn a rate indicating gyroscope, the gyroscope is turned at a steady… …   Wikipedia

• Stellar rotation — is the angular motion of a star about its axis. The rate of rotation can be measured from the spectrum of the star, or by timing the movements of active features on the surface.The rotation of a star produces an equatorial bulge due to… …   Wikipedia

• Solar rotation — can vary because the sun is composed of a gaseous plasma, and therefore may lack a fixed rotation rate. The rate of rotation is observed to be fastest at the equator (latitude φ=0 deg), and to decrease as latitude increases. The rotation rate is… …   Wikipedia

• Absolute rotation — In physics, the consideration of absolute rotation rotation independent of any external reference is a topic of debate about relativity, cosmology, and the nature of physical laws. The question of whether absolute rotation is meaningful is… …   Wikipedia

• Optimal rotation age — Contents 1 Economically optimum rotation age 2 Biologically optimum rotation age 3 Non timber forest use and effect on rotation 4 Factors …   Wikipedia

• Differential rotation — is seen when different parts of a rotating object move with different angular velocities (rates of rotation) at different latitudes and/or depths of the body and/or in time. This indicates that the object is not solid. In fluid objects, such as… …   Wikipedia