http://physics.ucsd.edu/students/cou...ecture5-11.pdf
"In 1960 Pound and Rebka and later, 1965, with an improved version Pound and Snider measured the gravitational redshift of light using the Harvard tower, h=22.6m. From the equivalence principle, at the instant the light is emitted from the transmitter, only a freely falling observer will measure the same value of f that was emitted by the transmitter. But the stationary receiver is not free falling. During the time it takes light to travel to the top of the tower, t=h/c, the receiver is traveling at a velocity, v=gt, away from a free falling receiver. Hence the measured frequency is: f'=f(1-v/c)=f(1-gh/c^2)."

The frequency measured at the bottom of the tower is f=c/λ, where λ is the wavelength. The frequency measured by the stationary receiver at the top of the tower is:

f' = f(1-gh/c^2) = (c/λ)(1-gh/c^2) = c'/λ

where c'=c(1-gh/c^2) is the speed of the light relative to the receiver. From the equivalence principle,

c' = c(1-gh/c^2) = c-v

is also the speed of light relative to an observer/receiver moving, in gravitation-free space, away from the light source with speed v:

http://www.youtube.com/watch?v=SC0Q6-xt-Xs
"Doppler effect - when an observer moves away from a stationary source. ....the velocity of the wave relative to the observer is slower than that when it is still."

Clearly both general and special relativity are false - the speed of light varies as predicted by Newton's emission theory of light.

Pentcho Valev