Does it make sense to talk about the amplitude of a photon? In my mind, the amplitude of the photon is the maximum strength that the electric and magnetic field gets as they oscillate. If you were to change the amplitude of a photon (say increase), then the maximum strength of the e&m fields increase which translates to a photon of higher energy, thus changing the classification of the photon (say the suggested increase would move the photon's energy from UV to x-ray). Now, I understand that many of the things I've just said may not exactly be right (and please correct me if it is). My main concern is understanding how amplitudes of EM waves fit in (if at all). I'm ultimately asking about this because I had a physics teacher who told us that increasing the amplitude of visible light will result in light with appears to be brighter. I think this is fundamentally wrong because brightness of light is related to the amount of photons that are emitted, not the amplitude of the individual photons. What's right and what's wrong with all of this? Don't beat me up too much with what I've said, but please do correct me. Thanks a bunch.