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Sep22-11, 04:45 PM
P: 319
Quote Quote by James Leighe View Post
I think we could gently fit in a photon mass.

There would still be some limit of speed for massless particles, if there are any, and any formulation that was based on that would survive.
Isn't this forgetting about the connection between EnM and SR, though. I think that connetion pretty much says the photons of EnM have to be the massless particles of SR. The "c" in SR cannot apply to a particle with mass, or the invariance is lost, and the whole theory goes to cr@p.