This thread has been split from a separate thread titled "neutrino".
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Farsight,
If you think an electron is not point-like, please tell me how big it is, and show me how you calculated that.
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Farsight,
So, on the one hand you say that electrons are quantum field excitations, but on the other hand you don't believe in virtual photons. How does that work?In some respects it's moved backwards. In some respects it's now cargo-cult science. We have some nonsense myths nowadays, like the notion that electrons and protons throw photons at one another. As if hydrogen atoms twinkle, and magnets shine.
What I mean when I say that an electron is a point particle is that it has no detectable internal structure. It still has uncertainty in its position, just like every particle.Quite. It's quantum field theory. Not quantum point-particle theory. And yet the myth that the electron is a point-particle persists. Even though there's no experimental evidence to support this. None.
If you think an electron is not point-like, please tell me how big it is, and show me how you calculated that.
Photons stop dead when they are absorbed. And when they are emitted, they are emitted travelling at c, instantly. They don't accelerate. The magnetic moment is related to the spin, and is similarly quantised. As far as I am aware, no magic is involved.Wrong again! Think about electron-positron pair production. Does the photon energy stop dead in no time flat? How about electron-positron annihilation. Does the photon energy accelerate instantly to c from a standing start? And how about magnetic moment? Is that magic too?
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