Hi David
It WAS a trick question to get someone to say the light revolves. But as you've said, it's the reflector that revolves, and others have said that modern police cars also have flashing lights
Terry
>Terry,
>
>If this is a serious question. There is a hemispherical mirror that rotates around a stationary light bulb located at the rotational axis of the mirror.
>
>>So how do the lights describe a circle?
- Whoever said that women are the weaker sex never tried to wrest the bedclothes off one in the middle of the night
- Worry is the interest you pay, in advance, for a loan that you may never need to take out.
