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Article #7425Re: Why does light slow down?
From: guy
Date: Fri, 17 Oct 1986 17:25
Date: Fri, 17 Oct 1986 17:25
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1238 bytes
In article <3494@columbia.UUCP>, zdenek@heathcliff.columbia.edu (Zdenek Radouch) writes: > 2. GLASS > > As usual, the more interesting case is when the waves travel in a material. If you want an even more interesting case, look at crystalline materials, which are not only dispersive (i.e., group and phase velocity differ) but are also anisotropic. This means that the polarization of the wave is a factor as well as the velocity. This behavior is used extensively by geologists to identify minerals using a polarizing microscope as each mineral passes polarized light in a somewhat different fashion (yes, I know I've oversimplified).
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!cuae2!ltuxa!we53!wucs!slu70!guy From: guy@slu70.UUCP Newsgroups: sci.physics Subject: Re: Why does light slow down? Message-ID: <316@slu70.UUCP> Date: Fri, 17-Oct-86 13:25:51 EDT Article-I.D.: slu70.316 Posted: Fri Oct 17 13:25:51 1986 Date-Received: Tue, 21-Oct-86 20:37:29 EDT References: <224@sri-arpa.ARPA> <3494@columbia.UUCP> Distribution: net Organization: Saint Louis University, St. Louis, MO Lines: 10 Keywords: phase velocity, group velocity, Cerenkov radiation Summary: crystals