[jbperry]

I had more than one refer to diagrams, but it didn't show the diagrams. Example:

Me: Explain Feynman diagrams Richard Feynman: Ok. Let’s start with the basics. If we have a simple electron traveling from x=0 to x=3 then we could use this diagram: The node circled in blue means that the electron isn’t interacting with anything and is just moving, the node circled in orange means that the electron is interacting with the photon and has an “integrated” or a sum of all possible solutions with differing amounts of spin.