Recent content by jndbrn

If a photon does have a mass, however small, should we then not according to theory observe photons traveling at much lower speeds than c? In fact, should not the whole range from zero to (almost) c be available? Is it correct to say that, since we don't see that, and if we assume the theory...

I’m a late entry to this discussion. Hope the following hasn’t been said in some form before and I’ve missed it. Cox and Forshaw explain in ‘Why does E = mc2’ that massless particles must travel at the cosmic speed limit c, and that if photons are massless this is what they are forced to do...