piclist 1998\10\26\234708a >
Thread: Speedometer Project
face BY : tjaartRemoveME@STOPspamwasp.co.za

> Bzzt ! You have to correct for the actual speed read by a police radar
> being outside the car, by using the forumla of relativity knowing the real
> speed when you take into account the slowing down of the quartz
> crystal used to measure speed and dimensional variations in the pickup
> system etc.

Does anyone have more details on the operation of these radars?
They are used in some areas of our country, and I wouldn't mind
some, errm, advance warning <wink, wink>. In most areas they
still use piezo electrical cables strung across the road (as you
can see from the nice picture of my car on my web page) :(

Friendly Regards

Tjaart van der Walt

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