Article View: sci.physics
Article #7476Re: Accelerating elevator
From: Ethan Vishniac
Date: Thu, 13 Nov 1986 19:37
Date: Thu, 13 Nov 1986 19:37
18 lines
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1532 bytes
In article <5363@brl-smoke.ARPA>, gwyn@brl-smoke.ARPA (Doug Gwyn ) writes:
> In article <1167@cit-vax.Caltech.Edu> myers@hobiecat.UUCP (Bob Myers) writes:
> >doppler shifted. What does the distribution of radiation with wavelength
> >look like? Is it still a black-body curve?
>
> This is harder to compute than it may first appear.
> I seem to recall that the answer is, no, isotropic
> black-body radiation does NOT look like isotropic
> black-body radiation with respect to a moving frame.
The radiation field still looks like a blackbody *in any given direction*
but a moving observer will see an angle dependent temperature.
--
"More Astronomy Ethan Vishniac
Less Sodomy" {charm,ut-sally,ut-ngp,noao}!utastro!ethan
- from a poster seen ethan@astro.AS.UTEXAS.EDU
at an airport Department of Astronomy
University of Texas
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!ut-sally!utastro!ethan From: ethan@utastro.UUCP (Ethan Vishniac) Newsgroups: sci.physics Subject: Re: Accelerating elevator Message-ID: <1401@utastro.UUCP> Date: Thu, 13-Nov-86 14:37:01 EST Article-I.D.: utastro.1401 Posted: Thu Nov 13 14:37:01 1986 Date-Received: Thu, 13-Nov-86 23:04:52 EST References: <1388@trwrb.UUCP> <546@mcgill-vision.UUCP> <1167@cit-vax.Caltech.Edu> <5363@brl-smoke.ARPA> Organization: U. Texas, Astronomy, Austin, TX Lines: 18 Summary: not isotropic but still a blackbody