Yes. The units require a constant with units of speed^2. Any such constant can always be expressed as some multiple of c^2. The c^2 isn't a big thing with deep meaning, it is just a question of units.Are all physics theories based on "the equivalence of energy E and mass m always reliant on the speed of light c?
Did you even read my response?thus eliminating any other constant as a point of reference to c?
There's a few key things to understand. The equivalence of mass and energy is an observed phenomena. We observe it all the time in particle colliders. To date, the LHC has looked at over 1.5 trillion collision events, and I assume that the total number is far more when you factor in all the other colliders that have been in operation over the years.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?