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Jul16-04, 01:17 PM
Sci Advisor
P: 875
Quote Quote by rayjohn01
you sometimes also see a wire trailing under the car to scrape the 'ground' this is literally to ground the car chassis since in dry weather it can build up static of 10's of thousands of volts giving quite a sharp shock on leaving the vehicle. Here the car and the real ground act as a capacitor -- the wire discharges it by conducting electrons from one to the other . Ray
I remember as a kid, all the cars and trucks had them. Now, I almost never see them. I live in DC, where it is not dry at all (it is a stinking swamp). Do they have them in drier areas still?