🚀 go-pugleaf

On Mar 14, 5:08 pm, Pentcho Valev <pva...@yahoo.com> wrote:
> On Mar 12, 4:03 pm, Tom Roberts <tjroberts...@sbcglobal.net> wrote:
>
> > Pentcho Valev wrote:
> > > [...]
>
> > You need to learn how to read more accurately. There is nothing in the
> > quote from Carlip or the quote from Einstein that contradicts anything I
> > said.
>
> > This is subtle, and your simple-minded approach of extracting quotes out
> > of context is woefully inadequate. One must UNDERSTAND what is written.
>
> > Tom Roberts
>
> Roberts Roberts I thought you were cleverer than Superior Brother
> Steve Carlip:
>
> http://groups.google.com/group/sci.physics.research/browse_frm/thread/f43bd437bc899633?
> Superior Brother Steve Carlip, Aug 1 1997: "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."
> Steve Carlip car...@dirac.ucdavis.edu
>
> Roberts Roberts in my view the last wisdom:
>
> "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."
>
> is EXTREMELY SILLY. What do you think? Do you find it EXTREMELY
> CLEVER?

Roberts Roberts I think Superior Brother John Baez is even sillier
than Superior Brother Steve Carlip:

http://groups.google.com/group/sci.physics/browse_frm/thread/285b377fd7945c22?
On February 23, 1994, Hartmut Frommert wrote in sci.physics:

>Though the natural constant "c" which is usually called the vacuum light
>velocity (or speed) can only be changed by re-definition of units (as any
>conversion factor), the (actual) speed of (the propagation of) light
>(photons !) is NOT constant, e.g. in a gravitational field (see any textbook
>on elementary General Relativity).

Superior Brother John Baez replied on Feb 24, 1994: "This is darn
misleading. The speed of light is constant in GR, it's just that the
spacetime the light is moving around in is a bit wiggly. Of course,
one *could* think of it the way you suggest, but one would have to
say, not just that the speed of light was different in a
"gravitational field," but that all other laws of physics were
different too, in a fairly complicated manner."

Pentcho Valev
pvalev@yahoo.com