MadSci Network: Physics |
Hopefully I can explain better this time: In a hypothetical situation, an electron interacts with another electron. They exchange a photon. How does one of these electrons "know" where the photon "came from"? ie: It could have come from a positron. I don't understand how one particle knows whether to be attracted or to repel if all they know about the other particle is "It sent a photon to me." I think this is simply a conceptual problem on my part, but I don't know anyone who knows about these things. And I am loosing sleep! Thanks for trying to understand this. (I typed the last question wrong)
Re: How do particles know where photons come from?
Try the links in the MadSci Library for more information on Physics.