|Speed radars can be the
bane of your existence. Driving along peacefully, only to
have your cruising be interrupted by the flashing of a
speed radar or, if you're unlucky, the wail of a siren.
How exactly do these curses upon humanity work, then?
By magic, I of course mean physics. More specifically, the physics of waves. There are two different types of radar: one that uses radio waves, and one that uses lasers. To begin this discussion, I'd like to first guide you into the wonderful world of wave physics.
Radar, Part 1
Radar, Part 2