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Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!rochester!rutgers!att!whuts!homxb!homxc!h16
From: h16@homxc.ATT.COM (D.JACOBOWITZ)
Newsgroups: rec.autos,sci.electronics,misc.consumers
Subject: Re: Correct Terminology (was Re: Radar Detectors (Ka band) ...)
Summary: laser beam spreading
Keywords: radar, laser, lidar?
Message-ID: <5632@homxc.ATT.COM>
Date: 20 Feb 89 19:08:36 GMT
References: <603@icus.islp.ny.us> <7944@netnews.upenn.edu> <1895@tank.uchicago.edu>
Organization: AT&T BL Holmdel NJ USA
Lines: 12

In article <1895@tank.uchicago.edu>, kean@tank.uchicago.edu (Keane Arase) writes
> 
> The laser beam will spread 3.5 feet in 1000 ft (1/5 mile!) and register
> your speed in 1/4 to 1/2 second.  (I know *I* don't have reaction

A laser will spread 3.5 feet in 1/5 mile?
Are you sure?
That doesn't sound like coherent light.
-----------------------------------------
Dave J.
homxc!h16
usual disclaimer implied