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Is the Pound-Rebka experiment compatible with Einstein's 1905 light
postulate? The speed of photons moving towards the source of gravity
varies with the gravitational potential (phi) in accordance with the
equation c'=c(1+(phi)/c^2) given by Newton's emission theory of light.
Einstein's equivalence principle converts this scenario into another
scenario where the photons experience no gravitational field but move
from the front end (emitter) to the back end (both receiver and
observer) of an accelerating rocket. It is easy to see that

(phi) = cv

where v is the speed of the emitter (at the moment of emission)
relative to the observer (at the moment of reception). So the equation
c'=c(1+(phi)/c^2) becomes c'=c+v, the Newtonian antithesis of
Einstein's 1905 light postulate. By confirming the equation c'=c(1+
(phi)/c^2), the Pound-Rebka experiment confirms the equation c'=c+v
given by Newton's emission theory of light and REFUTES Einstein's 1905
light postulate.

Pentcho Valev wrote:

The speed of light emitted downwards with initial speed c (relative to
the emitter) varies with the gravitational potential (phi) in
accordance with one of the following equations:

(1) c' = c(1+(phi)/c^2): Einstein's 1911 equation given by Newton's
emission theory of light.

(2) c' = c(1+2(phi)/c^2): Einstein's 1915 equation - the final version
in Einstein's general relativity.

(3) c' = c: Hawking's equation - the speed of light does NOT vary with
the gravitational potential.

The frequency of light emitted downwards with initial frequency f
varies with the gravitational potential (phi) in accordance with the
equation:

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

This equation is compatible with (1) and incompatible with (2) and
(3). It was confirmed experimentally by Pound and Rebka in 1960.

Generally Einsteiniana presents the Pound-Rebka experiment as a
glorious confirmation of Divine Albert's Divine Theory but sometimes
Einsteinians make fun of believers by teaching confusing ideas:

http://groups.google.com/group/sci.physics.relativity/msg/44abc7dbb30db6c2

John Norton: "THE MICHELSON-MORLEY EXPERIMENT IS FULLY COMPATIBLE WITH
AN EMISSION THEORY OF LIGHT THAT CONTRADICTS THE LIGHT POSTULATE."

Tom Roberts (an Einsteinian famous on sci.physics.relativity): "Sure.
The fact that this one experiment is compatible with other theories
does not refute relativity in any way. The full experimental record
refutes most if not all emission theories, but not relativity."

Pentcho Valev: "THE POUND-REBKA EXPERIMENT IS FULLY COMPATIBLE WITH AN
EMISSION THEORY OF LIGHT THAT CONTRADICTS THE LIGHT POSTULATE."

Tom Roberts: "Sure. But this experiment, too, does not refute
relativity. The full experimental record refutes most if not all
emission theories, but not relativity."

Pentcho Valev
pvalev@yahoo.com