Maxwell (1864) introduces an electromagnetic theory of light, based on Ampere and Faraday induction experiments, since induction forms in vacuum, but Ampere and Faraday induction experiments are not optical; consequently, Maxwell's theory of light is based on an induction analogy.
Maxwell (1864) introduces an electromagnetic theory of light, based on Ampere and Faraday induction experiments, since induction forms in vacuum, but Ampere and Faraday induction experiments are not optical. Einstein uses the photoelectric effect to structurally unify light with induction but the photoelectric effect is also an ionization effect which proves Maxwell's theory of light is based on an induction analogy.