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On 10/10/2014 4:04 AM, Lostgallifreyan wrote:
Jerry Stuckle wrote in news:m17bvm$cm0$1@dont- email.me: But by definition, anything moving at the speed of light must be massless, because it takes an infinite amount of energy to accelerate even an electron to that speed. Which means a photon cannot have mass. Agreed, (though mass-energy it does have), Not why I posted though, I find that the interestign thing is this term 'speed'. A 'speed' is something that CAN be reached, so what interests me is that the timing of light's travel seems to have other things to be known, starting with why it even appears to be a 'speed' and why it has the value it has. Studies of refractive index don't seem to have cracked this, but Bose-Einstein condensates seem to be doing dramatic things that might. That's true. But what is also interesting is there is no absolute velocity - only relative velocity. However, there is a maximum speed, and the effect of time dilation in respect to relative speed is interesting. Einstein's equations showing how this works were pure genius. But I'm not familiar with what a Bose-Einstein condensate is doing in this area . Could you please elucidate? -- ================== Remove the "x" from my email address Jerry Stuckle ================== |