with a radar gun
It measures the time it takes for the radar pulse to go from the radar gun to your vehicle and back. The pulse is fairly constant so the radar gun is getting updates and by comparing the updates to the time it can determine speed.
A radar gun only works when there's a free line-of-sight betweent he gun and its target vehicle.
A radar gun can detect the speed of vehicles of up to 1 mile, on an average. It depends on the radar gun's make and model, it may detect farther than 1 mile.
Only if he has his radar gun on. Radar detectors are not cop detectors.
As far as I know, radar was invented by a Hungarian scientist named Zoltan Bay. That radar was first used in World War II by the British troops.
1935
No, police radar guns are designed to measure the speed of vehicles, not capture license plate numbers. License plate numbers are typically recorded by cameras used in automated license plate recognition systems.
Radar gun.
get a radar gun.
Radar was first put on ships during WW2.
The newly invented radar.