The formula

(frequency) = (speed of light) / (wavelength)

entails the following statements:

Statement 1: The speed of light is constant as per Einstein IF AND ONLY IF the wavelength of light is variable.

Statement 2: The speed of light is variable as per Newton IF AND ONLY IF the wavelength of light is constant for a given emitter.

Both the antecedent and the consequent in Statement 2 are true. The consequent,

"the wavelength of light is constant for a given emitter",

will become the fundamental axiom of future, Einstein-free physics.

The (false) fundamental axiom of present, Einstein's physics is

"the speed of light is constant",

the antecedent in Statement 1:

"He opened by explaining how Einstein's theory of relativity is the foundation of every other theory in modern physics and that the assumption that the speed of light is constant is the foundation of that theory. Thus a constant speed of light is embedded in all of modern physics and to propose a varying speed of light (VSL) is worse than swearing! It is like proposing a language without vowels." http://www.thegreatdebate.org.uk/VSLRevPrnt.html

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