Feynman was a cheat but still he unwittingly contributed to the downfall of Einstein's physics by declaring this:
Richard Feynman: "I want to emphasize that light comes in this form - particles. It is very important to know that light behaves like particles, especially for those of you who have gone to school, where you probably learned something about light behaving like waves. I'm telling you the way it does behave - like particles. You might say that it's just the photomultiplier that detects light as particles, but no, every instrument that has been designed to be sensitive enough to detect weak light has always ended up discovering the same thing: light is made of particles." QED: The Strange Theory of Light and Matter p. 15
https://www.amazon.com/QED-Strange-Theory-Light-Matter/dp/0691024170
Feynman's words, if taken at face value, imply that the concept of VARIABLE wavelength of light (and, accordingly, of CONSTANT speed of light), as illustrated here
https://www.youtube.com/watch?v=xsVxC_NR64M
is unrealistic. Actually, a lot of evidence suggests that the wavelength of light, in ANY scenario, depends only on the nature of the emitting substance and is constant otherwise.
"The wavelength of light is constant" will become the fundamental axiom of future, Einstein-free physics (if theoretical physicists have not irreversibly destroyed the potential for rational thinking). Here are some corollaries of the new axiom:
Corollary 1: Any frequency shift entails (is caused by) a proportional speed-of-light shift.
Corollary 2: If the emitter and the observer travel towards each other with relative speed v, the speed of light relative to the observer is c' = c+v, as posited by 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.
Corollary 5: The so-called cosmological (Hubble) redshift is due to the speed of light gradually slowing down as light travels through vacuum, in a non-expanding universe.
Corollary 6: The dark sky in the Olbers' paradox can be explained by two facts. 1. Low-speed, high-redshifted light (known as CMB), coming from very distant sources, is invisible. 2. Beyond a certain distance, the star light does not reach us at all (its speed is reduced to zero).
Pentcho Valev
https://twitter.com/pentcho_valev