🚀 go-pugleaf

On Feb 26, 9:42 am, Pentcho Valev <pva...@yahoo.com> wrote:
> On Feb 25, 5:33 pm, Pentcho Valev <pva...@yahoo.com> wrote:
>
> >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?
>
> Brother Paul Davies wants to confuse you, Honest Carlip, but you will
> not be taken in, will you:
>
> http://www.guardian.co.uk/science/2004/apr/10/spaceexploration.comment
> Paul Davies: "Then, in 1960, the third test was finally conducted with
> reasonable accuracy. Physicists at Harvard University measured a small
> shift in the frequency of gamma rays directed vertically up a tower,
> confirming that gravity slows time."

Unlike silly brother Paul Davies, somewhat cleverer brother Tom
Roberts could help you a lot, Honest Carlip. See how brother Tom
Roberts has almost solved the problem:

http://groups.google.com/group/fr.sci.physique/msg/44abc7dbb30db6c2

Pentcho Valev
pvalev@yahoo.com