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From: stekas@hou2g.UUCP (J.STEKAS)
Newsgroups: net.physics
Subject: Re: Nature of Photons
Message-ID: <211@hou2g.UUCP>
Date: Fri, 30-Mar-84 09:40:28 EST
Article-I.D.: hou2g.211
Posted: Fri Mar 30 09:40:28 1984
Date-Received: Sat, 31-Mar-84 07:24:15 EST
References: <694@ihuxp.UUCP>, <291@charm.UUCP>
Organization: AT&T Bell Labs, Holmdel NJ
Lines: 7

Doesn't LASER mean "Light Amplification by Stimulated Emission of Radiation"?

It seems that no restrictions are placed on overall gain, monochromicity, ...,
so why does one need a cavity to have a LASER?  You might need a cavity to
make a useful LASER , but "useful" isn't part of the definition.

                                                    Jim