>>>>>>
>>>>>>
>>>>>>What is it that revolves on the roof of a police car?
>>>>>
>>>>>Nothing.
>>>>
>>>>How so? What about when the cruiser's blue and red lights are on>
>>>
>>>On american police cars everything is fixed to the roof and nothing revolves on the roof.
>>
>>So how do the lights describe a circle?
>
>
>You old worlders use outdated technology. Why use mechanical devices that *rotate* a light? What are they, rolling lighthouses? So 20th century.

Yeah, and we still have a little man in there who keeps adding the chemicals to turn the gas lights red and blue, and to crank the handle.

>
>We use quarz crystals that oscillante in a precise frequency to show a rotating-blinking effect and to numb the brains of gullible non-technical people into thinking they are actually rotating colorful lights.

So do we!!!

It was a trick question again. In a sense you've actually fallen for it cos, in the old scheme, it was the REFLECTOR that rotated, not the lights. So yah boo sucks! <bg>