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SPEED OF LIGHT IN GRAVITY : NEWTON, NOT EINSTEIN



 
 
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Old October 23rd 13, 07:16 AM posted to sci.astro
Pentcho Valev
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Default SPEED OF LIGHT IN GRAVITY : NEWTON, NOT EINSTEIN

The top of a tower of height h emits light with frequency f, speed c and wavelength L (as measured by the emitter):

f = c/L

An observer on the ground measures the frequency to be f'=f(1+gh/c^2) (the Pound-Rebka experiment), the speed of light to be c' and the wavelength to be L':

f' = c'/L'

The crucial questions a

c' = ? ; L' = ?

Newton's emission theory of light gives a straightforward answer:

Newton's answer: c' = c(1+gh/c^2) ; L' = L

Einstein's general relativity says that c'=c(1+2gh/c^2) but Einsteinians avoid this prediction and instead teach that, according to general relativity, c'=c. Let us ascribe this answer to Einstein:

Einstein's answer: c' = c ; L' = L/(1+gh/c^2)

Obviously, and Einsteinians admit that, Newton's answer is reasonable:

http://www.einstein-online.info/spot...t_white_dwarfs
Albert Einstein Institute: "One of the three classical tests for general relativity is the gravitational redshift of light or other forms of electromagnetic radiation. However, in contrast to the other two tests - the gravitational deflection of light and the relativistic perihelion shift -, you do not need general relativity to derive the correct prediction for the gravitational redshift. A combination of Newtonian gravity, a particle theory of light, and the weak equivalence principle (gravitating mass equals inertial mass) suffices. (...) The gravitational redshift was first measured on earth in 1960-65 by Pound, Rebka, and Snider at Harvard University..."

Einstein's answer is absurd - the variation of the wavelength with height has no physical justification. Consider an equivalent scenario where, in gravitation-free space, a rocket of length h accelerates with acceleration g. If c'=c, then the light emitted by the front end, as it travels towards the back end in the absence of any external constraints, constantly changes its wavelength so that, when this light reaches the observer at the back end, the product f'L' can turn out to be exactly equal to c, Divine Einstein, yes we all believe in relativity, relativity, relativity. Miracles of this kind can only happen in Divine Albert's schizophrenic world.

Pentcho Valev
 




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