A radar gun measures a vehicle's speed using the Doppler effect. The antenna transmits a continuous microwave signal toward a moving vehicle. When the signal reflects back, its frequency changes depending on whether the vehicle is moving toward or away from the radar gun. The internal circuit compares the transmitted and reflected frequencies, calculates the Doppler shift, and instantly converts it into the vehicle's speed. Because radio waves travel at the speed of light, the measurement is fast and highly accurate. Radar guns are widely used by law enforcement, traffic engineers, and safety teams to monitor vehicle speeds, improve road safety, reduce accidents, and enforce speed limits. They provide reliable, non-contact speed measurement in almost all weather conditions. #RadarGun #Electronics #ElectronicsEducation #ElectronicsRD