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Jerry, I'm getting back to this point from your thread, only because it's relevant to this topic.The mass of the photon is zero. So. If E=mc^2 - and if the photon's mass is zero - then, indeed, the product of zero times any mass at all is still zero - indicating that the photon has no innate energy to move it in any direction at all.
Quote from: jerrygg38Therefore the photon is a plane wave which spins and then looks like a screw thread if we follow it at the speed of light.But we have studied photons relentlessly. Some are spin polarized so that they spin around an axis in the direction of their travel. This spin carries angular momentum that is conserved and conveyed to any impacted particle. Experiments testing this are very well documented. Some photons are not spin polarized and move through space with little or no spin.
Therefore the photon is a plane wave which spins and then looks like a screw thread if we follow it at the speed of light.
JerryGG38 - you've missed the point. I'm trying to find out what principle in physics precludes superluminal speed. Is is classical - or is it just a widely held opinion?
I understood that the E-mc squared somehow precluded anything exceeding light speeds. The second equation modified this first to accommodate photons? Are you saying that there is nothing, in fact, to preclude something exceeding light speed? I'm holding my breath here for this answer.
If the spin is 1 or 0, then to me we have a dual photon with the positive and negative dot-waves spinning in the same or opposite directions. Therefore they can sum up or cancel spins.
Not sure why the emphasis or the relevance? Is'nt widely understood that an electron moves at light speed in its orbit around the nucleus? And, equally, there are many many proposals that the electron is a composite. Some say doublet - others triplet. But it's not a unique concept surely?
Then - back to the casimir effect. If these little numbers in fact 'bind' amalgams - they would not be evident as their charge is neutral - their fields are neutral - and they would respond to other similar fields as any one magnet would respond to another. And the casimir effect has definitely been proven but on a really small scale.