Light is ultimately composed of photons. Photons are also force carriers of the electrical force. When an electric motor is turning it is photons which are turning it. What is the relation between photons that make up light and the ones that make up the electric force? Are they just photons in a higher energy state? I am aware this question has been asked before-- and has been answered as being at a different energy level. I would like a more detailed mathematical answer.
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