To my embarrassment I realised I do not understand this. How does a photon mediate the EM force? If I put two magnets close to each other then there is no EM radiation jumping from the one to the other. So how does the photon carry the particle? I know that very magnet has a Magnetic field and that a photon is a little moving quanta of EM energy. Or a EM disruption in the EM field. But I fail to understand this. A EM field has nothing to do with photons right? Or do photons only jump over if there is an actual force on a charged object? Then, is it possible to observe a EM field through photons? Or lies my problem in the difference between an electric field, a magnetic field and an electromagnetic field?