Thanks for your response. I appreciate it. However I just want to be sure that this means that all existent energy theories present use the speed of light as a point of constant reference thus eliminating any other constant as a point of reference to c?
Are all physics theories based on "the equivalence of energy E and mass m always reliant on the speed of light c?
Are there any alternative theories related to the equivalence of energy and mass that are not reliant on "the speed of light"?
I would appreciate your attention,
ttvlr