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Hi Gile"Are photons the particle element of light and EM electromagnetic field is the wave"EM light can exist without any particles and in fact by definition must be massless if it moves at the speed of light or otherwise it would represent infinite energy.The massless energy of photons should be measurable in Joules per cubic metre of magnoflux.Happy New YearCliveS
Geezer, I don't think this was your point, but I'd like to clarify it. There is no question that there are ways light can behave that aren't modeled by classical electromagnetic waves. Single-photon states are on example, although there are others. You can still model them with quantum field theory, which involves wavefunctions, however.
Ultimately though, is it true that photons can only be detected by their interaction with matter?
Also, in answer to Clive's question, photons are viewed as massless particles, so they won't have infinite energy. Also, "magnoflux" isn't a term that's used in physics. You probably mean electromagnetic energy density, which would be the amount of energy per volume associated with the electromagnetic field.