If lightspeed were constant to all frames

On Aug 18, 4:59*am, Tom Roberts wrote in
sci.physics.relativity:
Spaceman wrote:
If lightspeed was 186,000 miles per second to all frames
and it truly was not "relative" instead, Doppler effect would
never occur to lightwaves.

This is just plain wrong.

In SR, both the frequency and the wavelength of a given light beam (in
vacuum) depend on the inertial frame in which they are measured. But in
all frames the product wavelength*frequency is the same value, c.

Bravo Honest Roberts! It seems you believe that, in a gravitational
field, again, "the product wavelength*frequency is the same value, c",
but in this case you have a slightly different explanation:

http://groups.google.com/group/sci.p...2bf614c261e66c
Tom Roberts: "Pound et al used the 22-meter Harvard tower, using the
Moessbauer effect to obtain the requisite resolution. The others use
atomic clocks. None of the above measured wavelength directly. But we
do know that on earth the speed of light is c, and in the GPS the
speed of light is c between satellite and ground."

Pentcho Valev