It is through James Maxwell did God say, “let there be light.” In his 1864 paper A dynamical theory of the electromagnetic field, Maxwell wrote, “The agreement of the results seems to show that light and magnetism are affections of the same substance, and that light is an electromagnetic disturbance propagated through the field according to electromagnetic laws”.
Maxwell’s 4 equations on electromagnetic interactions form the basis of all classical physics with anything to do with electricity, light, or magnetism.
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