For Radial Velocity we have terms and definitions in 3 topics. The topics are Climatology, Explosives and Weather.

Radial Velocity (Climatology)

The component of motion toward or away from a given location. As detected by Doppler radar, it is the component of motion parallel to the radar beam. An object moving perpendicular to the radar beam has a radial velocity of zero.

Radial Velocity (Explosives)

Radial velocity, the speed with which a star moves toward or away from the sun. It is measured from the Red Shift or blue shift in the star's spectrum. Also Proper Motion.

Radial Velocity (Weather)

Component of motion toward or away from a given location. As "seen" by Doppler radar, it is the component of motion parallel to the radar beam. (The component of motion perpendicular to the beam cannot be seen by the radar. Therefore, strong winds blowing strictly from left to right or from right to left, relative to the radar, can not be detected.)

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