Steve Carlip about the speed of light

Article View: sci.physics.relativity

Article #6998

Back to sci.physics.relativity Previous Next

#6998

From: Pentcho Valev
Date: Wed, 25 Feb 2009 15:33

25 lines
2542 bytes

http://groups.google.com/group/sci.physics.research/msg/c7eddf24b59b0840
Steve Carlip: "In special relativity, the speed of light is constant
when measured in any *inertial* frame.  In general relativity, the
appropriate generalization is that the speed of light is constant in
any freely falling reference frame (in a region small enough that
tidal effects can be neglected). In this passage, Einstein is not
talking about a freely falling frame, but rather about a frame at rest
relative to a source of gravity.  In such a frame, the speed of light
can differ from c, basically because of the effect of gravity
(spacetime curvature) on clocks and rulers."

Honest Carlip, is the gravitational frequency shift, e.g. that
measured by Pound and Rebka, caused by the fact that "the speed of
light can differ from c"? Your sillier brothers teach the
gravitational frequency shift is consistent with variable wavelength
while the speed of light remains constant, in accordance with the
formula:

frequency = (speed of light)/(wavelength)

Why don't you teach your sillier brothers, Honest Carlip? Is this
ambiguity the fundamental task of Einsteiniana?

Pentcho Valev
pvalev@yahoo.com

Technical Details

Message-ID: <127ead9b-2d1d-463a-b15c-08ee8c75a02d@q9g2000yqc.googlegroups.com>

Path: arc1-ca.pugleaf.net!g2news2.google.com!postnews.google.com!q9g2000yqc.googlegroups.com!not-for-mail

Show Full Headers

Complete Article Headers

X-Google-Thread: 10f545,e00c72c28eb86f87,start
X-Google-Thread: 10b271,e00c72c28eb86f87,start
X-Google-Thread: fa4c1,e00c72c28eb86f87,start
X-Google-Attributes: gid10f545,gid10b271,gidfa4c1,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Path: arc1-ca.pugleaf.net!g2news2.google.com!postnews.google.com!q9g2000yqc.googlegroups.com!not-for-mail
From: Pentcho Valev <pvalev@yahoo.com>
Newsgroups: sci.physics.relativity,sci.physics,fr.sci.physique
Subject: Steve Carlip about the speed of light
Date: Wed, 25 Feb 2009 07:33:10 -0800 (PST)
Organization: http://groups.google.com
Lines: 25
Message-ID: <127ead9b-2d1d-463a-b15c-08ee8c75a02d@q9g2000yqc.googlegroups.com>
NNTP-Posting-Host: 79.100.231.46
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-Trace: posting.google.com 1235575990 31360 127.0.0.1 (25 Feb 2009 15:33:10 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Wed, 25 Feb 2009 15:33:10 +0000 (UTC)
Complaints-To: groups-abuse@google.com
Injection-Info: q9g2000yqc.googlegroups.com; posting-host=79.100.231.46; 
 posting-account=Lz-LbgoAAABPDavKeW-eYeobwLHD_cvQ
User-Agent: G2/1.0
X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET 
 CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30),gzip(gfe),gzip(gfe)