Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!usc!apple!rutgers!mcnc!ecsvax.uncecs.edu!urjlew From: urjlew@uncecs.edu (Rostyk Lewyckyj) Newsgroups: sci.electronics Subject: Re: Bad News- Lasers replace Radar guns Message-ID: <1990Jan21.045815.22217@uncecs.edu> Date: 21 Jan 90 04:58:15 GMT References: <7263@lindy.Stanford.EDU> <349@egrunix.UUCP> <26126@cup.portal.com> Distribution: na Organization: UNC Educational Computing Service Lines: 6 How about coatings that change the wavelength of the reflected light? Or a semireflective half? wavelength thick coating, that would cancell out the reflection by interference? This would seem to be easier than refracting gratings