Swing Speed Radar

Radar waves travel through the atmosphere at roughly 300,000 km per second (the speed of light). The range to a target is determined by measuring the time that a radar signal takes to travel out to the target and back.

One device law enforcement use to measure the expected speed of a moving vehicle is Doppler radar , which uses the Doppler effect to measure the relative speed of a vehicle.

Best speed camera detector in 2022

With your smartphone, you can measure the speed of people or moving objects with the apps Speed Gun (Android TM ) and SpeedClock (iOS). Great for sporting events like baseball, football or track and field.