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Physics
Classical Physics
Electromagnetism
Faraday effect breaks photon interaction laws
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[QUOTE="vanhees71, post: 6553000, member: 260864"] Note that the Faraday effect refers to in-medium electrodynamics. The effect of the magnetic field is on the charges making up the medium, leading to a modified in-medium Green's function for the propatation of em. waves. In the vacuum within classical field theory electromagnetic fields are non-interacting, because they don't carry electric charge. BTW: You should not use the word photon in the classical-physics forum, because it's a notion of quantum field theory (or in this case specifically quantum electrodynamics). Indeed in QED there is an interaction between photons, elastic photon scattering (aka Delbrück scattering), which is a higher-order quantum-correction effect (of the order ##\alpha^4##). [/QUOTE]
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Forums
Physics
Classical Physics
Electromagnetism
Faraday effect breaks photon interaction laws
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