More on relativistic equivalence between electric and magnetic field: https://physics.stackexchange.com/questions/489291/how-did-einstein-know-the-speed-of-lig

More on relativistic equivalence between electric and magnetic field: https://physics.stackexchange.com/questions/489291/how-did-einstein-know-the-speed-of-light-was-constant/489614#489614 https://physics.stackexchange.com/questions/489291/how-did-e...