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## Main Question or Discussion Point

Do electromagnetic waves have potential and kinetic energy like springs, strings, etc. If so how are they calculated, inter-related? What is the total energy? Are the energies fluctuating over time?

I am a physics hobbyist so generally the first answers should come with the least mathematics as possible - high level - and then I delve further/dig into the math if I need to.

Thanks in advance.

I am a physics hobbyist so generally the first answers should come with the least mathematics as possible - high level - and then I delve further/dig into the math if I need to.

Thanks in advance.