The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
(Score: 0) by Anonymous Coward on Tuesday March 11, @09:27AM
by Anonymous Coward
on Tuesday March 11, @09:27AM (#1395982)
Anything with rest-mass cannot accelerate to light-speed as that would require infinite energy.
To paraphrase Leonard Susskind; "Photons have no mass because they are massless particles". Joking aside, a Photon would have an estimated rest-mass on the order one quintillionth that of a Neutrino. We cannot hope to measure it so we correctly say "practically massless", the implication being that the momentum of Photons or hypothetical Gravity messenger particle could be slightly slower than the ultimate quantum speed of causality.
(Score: 0) by Anonymous Coward on Tuesday March 11, @09:27AM
To paraphrase Leonard Susskind; "Photons have no mass because they are massless particles". Joking aside, a Photon would have an estimated rest-mass on the order one quintillionth that of a Neutrino. We cannot hope to measure it so we correctly say "practically massless", the implication being that the momentum of Photons or hypothetical Gravity messenger particle could be slightly slower than the ultimate quantum speed of causality.
Which is to say; we're all with Lenny on this!