<unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk>
1873, Maxwell describes an electromagnetic ether but the Ampere-Faraday massless electromagnetic field conflicts with Huygens-Fresnel ether that is composed of matter and Maxwell's electromagnetic theory of light is based on Ampere and Faraday induction experiments that are not optical.<unk>