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- Path: sparky!uunet!news.centerline.com!jimf
- From: jimf@centerline.com (Jim Frost)
- Newsgroups: rec.autos
- Subject: Re: Quick radar question about traffic ticket
- Date: 9 Nov 1992 14:46:48 GMT
- Organization: CenterLine Software, Inc.
- Lines: 22
- Message-ID: <1dltkoINNc25@armory.centerline.com>
- References: <Bx9EMo.2F9@mentor.cc.purdue.edu> <etc.> <Bx7KBI.82u@mentor.cc.purdue.edu> <1992Nov4.215533.2792@erg.sri.com> <1dc7f3INNho2@usenet.INS.CWRU.Edu>
- NNTP-Posting-Host: 140.239.3.202
-
- aas7@po.CWRU.Edu (Andrew A. Spencer) writes:
- >hmm..what i was reading into this whole 'vette versus peterbuilt thing, is
- >that the radiator of the vette is angled, and that in the truck is standing
- >upright. thus, when a radar wave strikes the surface of the vette radiator,
- >it is reflected back up, where as the one in the truck will reflect it back
- >at the gun..(someone quoted the rule that i cannot remember right now..something
- >about angle of incidence= angle of reflection??..)..is this true, or no?..
- >(while i am sure this is only a small part of all of this crap,..i just wonder
- >if this small portion is correct?)
-
- AI=AR is high-school freshman physics (it should be obvious in any
- case). The comparison of a truck radiator to a vette radiator is
- valid, although the truck will actually be a much larger reflector
- than just its radiator -- most trucks have lots of flat mettalic
- surfaces and will be terrific reflectors as the angle of incidence
- approaches perpendicularity with respect to the truck body (in
- practical terms this means that the farter away the truck is the
- better reflector it is, although the affect does drop off quickly
- because of the inverse square law).
-
- jim frost
- jimf@centerline.com
-