If there are multiple things out there, say more raindrops, more beams will bounce back. What radar can do is measure the ...

In this context, one of the earliest mechanical solutions was speed traps. These comprised sensors laid on the road at certain intervals and a timing device to record how long it took for a vehicle to ...

Radar, which stands for radio detection and ranging, has been around for almost as long as controlled flight. Robert Watson-Watt and Arnold Wilkins conducted the first experiments that led to a ...