Different paths to some fundamental physical laws: relativistic polarization of a moving magnetic dipole

Abstract

In this paper we consider the relativistic polarization of a moving magnetic dipole and show that this effect can be understood via the relativistic generalization of Kirchhoff's first law to a moving closed circuit with a steady current. This approach allows us to better understand the law of relativistic transformation of four-current density when it is applied to the moving macroscopic magnetic dipoles.