Magnetic fields are linked to electric fields; [[light]], for instance, is a propagating electric and magnetic [[wave]]. Relativistically, a magnetic force in one [[inertial frame]] corresponds to an electric force in another. | Magnetic fields are linked to electric fields; [[light]], for instance, is a propagating electric and magnetic [[wave]]. Relativistically, a magnetic force in one [[inertial frame]] corresponds to an electric force in another. |