A radar gun is a device that uses radio waves to measure the speed of moving objects. The radar gun, invented by Bryce K. Brown in 1954, is frequently used in law enforcement to calculate the speed of moving cars. The radar gun is a Doppler radar unit that can be static, mounted on a vehicle, or carried in the hand. It detects the Doppler effect's change in the frequency of reflected radar signals to determine vehicle speed. However, vehicle separation is required for the radar gun to operate properly while monitoring the vehicle's speed.
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