Variable (Newtonian) speed of light:
Stationary light source, moving observer (receiver):
http://www.einstein-online.info/imag...ector_blue.gif
The speed of the light pulses as measured by the source is
c = df
where d is the distance between the pulses and f is the frequency measured by the source. The speed of the pulses as measured by the observer is
c'= df' c
where f' f is the frequency measured by the observer.
In the next version of fundamental physics the original malignancy, Einstein's 1905 nonsensical axiom
"The speed of light is constant"
will be replaced with the correct axiom
"For a given emitter, the wavelength of light is constant".
I have developed the idea in a series of tweets he
https://twitter.com/pentcho_valev
Pentcho Valev