University of Illinois at Urbana-Champaign: "Consider a falling object. Its speed increases as it is falling. Hence, if we were to associate a frequency with that object the frequency should increase accordingly as it falls to earth. Because of the equivalence between gravitational and inertial mass, we should observe the same effect for light. So lets shine a light beam from the top of a very tall building. If we can measure the frequency shift as the light beam descends the building, we should be able to discern how gravity affects a falling light beam. This was done by Pound and Rebka in 1960. They shone a light from the top of the Jefferson tower at Harvard and measured the frequency shift. The frequency shift was tiny but in agreement with the theoretical prediction."
https://courses.physics.illinois.edu/phys419/sp2011/lectures/Lecture13/L13r.html
The UIUC professor has unwittingly revealed a simple truth fatal for Einstein's physics but fundamental for future, Einstein-free physics:
In vacuum, speed of light and frequency vary proportionally while the wavelength of light remains constant, in accordance with the formula
(speed of light) = (wavelength)(frequency)
The simple truth is also universal:
In vacuum, speed of light and frequency ALWAYS vary proportionally while the wavelength of light ALWAYS remains constant (its value depends only on the emitting substance).
Pentcho Valev
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