It is a radar device so the speed of sound is irrelevant. The speed of light in ...

		A1kmm on Jan 20, 2015 \| parent \| context \| favorite \| on: New police radars can 'see' inside homes It is a radar device so the speed of sound is irrelevant. The speed of light in air (and hence the refractive index) does depend slightly on temperature / pressure, but not by very much: https://physics.stackexchange.com/questions/6872/refractive-...