If judged by their speed alone, photons are Newtonian particles. The speed of light VARIES, both in the presence and in the absence of gravity, just as does the speed of ordinary projectiles (e.g. bullets). Actually, this is a proven truth but no one cares (post-truth science):
"Emission theory, also called Emitter theory or ballistic theory of light, was a competing theory for the special theory of relativity, explaining the results of the Michelson–Morley experiment of 1887. [...] The name most often associated with emission theory is Isaac Newton. In his corpuscular theory Newton visualized light "corpuscles" being thrown off from hot bodies at a nominal speed of c with respect to the emitting object, and obeying the usual laws of Newtonian mechanics, and we then expect light to be moving towards us with a speed that is offset by the speed of the distant emitter (c ± v)."
https://en.wikipedia.org/wiki/Emission_theory
"We conclude, therefore, that A BEAM OF LIGHT WILL ACCELERATE IN A GRAVITATIONAL FIELD AS DO OBJECTS WITH REST MASS. For example, near the surface of Earth light will fall with acceleration 9.8 m/s^2."
http://web.pdx.edu/~pmoeck/books/Tipler_Llewellyn.pdf
"The speed of light is variable as per Newton"
is equivalent to
"The wavelength of light is constant for a given emitter"
The latter proposition will become the fundamental axiom of future, Einstein-free physics (if the death of physics is not irreversible).
Is the new axiom correct? Judging from the three scenarios below, (A), (B) and (C), it is:
(A) The observer starts moving relative to the emitter
https://www.youtube.com/watch?v=bg7O4rtlwEE. The wavelength (distance between light pulses) obviously remains constant. Accordingly, the frequency and the speed of the pulses VARY proportionally for the moving observer, in violation of Einstein's relativity.
(B) The emitter starts moving relative to the observer
https://www.youtube.com/watch?v=xsVxC_NR64M. It is universally taught that the wavelength of light varies with the speed of the emitter, as shown in the video, but this contradicts the principle of relativity. If the wavelength varied, the emitter would measure its varying value, inside his spaceship, and so he would be able to calculate his spaceship's speed without looking outside. The wavelength of light is constant, independent of the speed of the emitter. Accordingly, the speed of the light and the frequency, as measured by the stationary observer, VARY with the speed of the emitter, in violation of Einstein's relativity.
(C) Light falls in a gravitational field. The frequency and the speed of falling light vary proportionally, and accordingly the wavelength remains constant. This is clearly shown in the following two texts:
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. Consider a light beam that is travelling away from a gravitational field. Its frequency should shift to lower values. This is known as the gravitational red shift of light."
https://courses.physics.illinois.edu...re13/L13r.html
"To see why a deflection of light would be expected, consider Figure 2-17, which shows a beam of light entering an accelerating compartment. Successive positions of the compartment are shown at equal time intervals. Because the compartment is accelerating, the distance it moves in each time interval increases with time. The path of the beam of light, as observed from inside the compartment, is therefore a parabola. But according to the equivalence principle, there is no way to distinguish between an accelerating compartment and one with uniform velocity in a uniform gravitational field. We conclude, therefore, that A BEAM OF LIGHT WILL ACCELERATE IN A GRAVITATIONAL FIELD AS DO OBJECTS WITH REST MASS. For example, near the surface of Earth light will fall with acceleration 9.8 m/s^2."
http://web.pdx.edu/~pmoeck/books/Tipler_Llewellyn.pdf
Five important corollaries of the constant-wavelength-of-light axiom:
Corollary 1: Any frequency shift entails (is caused by) a proportional speed-of-light shift.
Corollary 2: If the emitter and the observer (receiver) travel towards each other with relative speed v, the speed of light as measured by the observer is c' = c+v, as per Newton's theory.
Corollary 3: Spacetime and gravitational waves (ripples in spacetime) don't exist. LIGO's "discoveries" are fakes.
Corollary 4: Light falls in a gravitational field with the same acceleration as ordinary falling bodies - near Earth's surface the accelerations of falling photons is g = 9.8 m/s^2. Accordingly, there is no gravitational time dilation - Einstein's general relativity is nonsense.
Corollary 5: The Hubble redshift is due to light slowing down as it travels through vacuum. The universe is static, not expanding.
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