sci.physics.particle

On Mar 16, 7:14 pm, Tom Roberts wrote:
> The Speaking Clock wrote:
> > On 15 Mar, 08:57, Pentcho Valev wrote:
> >> [... his usual nonsense]
>
> > Would the speed of light be a non wiggly constant at the very edge of
> > the universe - bending around it?
>
> The speed of light is a constant, c, for any LOCAL measurement anywhere
> in the universe. I guess that includes "non wiggly". It also includes
> essentially all measurements of light speed here on earth. At least that
> is what GR predicts, and there are no observations that contradict it.
>
> [Ignore Valev when he brings up Pound-Rebka and similar
> experiments -- they do not measure speed.]

They do Roberts Roberts. Directly, Pound and Rebka have measured the
frequency and have obtained:

f'= f(1 + V/c^2)

Now Roberts Roberts you can apply the textbook formula:

frequency = (speed of light)/(wavelength)

and so you understand that, indirectly, Pound and Rebka have measured
the speed of light and have confirmed Einstein's 1911 equation:

c'= c(1 + V/c^2)

Some of your brothers have already understood that Roberts Roberts:

http://www.blazelabs.com/f-g-gcont.asp "The first confirmation of a
long range variation in the speed of light travelling in space came in
1964. Irwin Shapiro, it seems, was the first to make use of a
previously forgotten facet of general relativity theory -- that the
speed of light is reduced when it passes through a gravitational
field....Faced with this evidence, Einstein stated:"In the second
place our result shows that, according to the general theory of
relativity, the law of the constancy of the velocity of light in
vacuo, which constitutes one of the two fundamental assumptions in the
special theory of relativity and to which we have already frequently
referred, cannot claim any unlimited validity. A curvature of rays of
light can only take place when the velocity of propagation of light
varies with position."......Today we find that since the Special
Theory of Relativity unfortunately became part of the so called
mainstream science, it is considered a sacrilege to even suggest that
the speed of light be anything other than a constant. This is somewhat
surprising since even Einstein himself suggested in a paper "On the
Influence of Gravitation on the Propagation of Light," Annalen der
Physik, 35, 1911, that the speed of light might vary with the
gravitational potential. Indeed, the variation of the speed of light
in a vacuum or space is explicitly shown in Einstein's calculation for
the angle at which light should bend upon the influence of gravity.
One can find his calculation in his paper. The result is c'=c(1+V/c^2)
where V is the gravitational potential relative to the point where the
measurement is taken. 1+V/c^2 is also known as the GRAVITATIONAL
REDSHIFT FACTOR."

Pentcho Valev
pvalev@yahoo.com