Abstract: Journal of Aerospace Engineering, Aeronautics, and Space Technologies

Abstract:
The finiteness of the propagation speed of the charge field change, according to the Principle of Causality, leads to longitudinal and transverse relativistic effects of the Coulomb field. Thus, relativism is the cause of the magnetic field. However, historically, the description of the magnetic field was conducted without taking into account the Principle of Relativity. Thus, an indirect characteristic of the magnetic field—the Ampere force, defined only for low charge velocities—was incorporated into the Lorentz force as the modulus of the magnetic force and, thus, into the very definition of magnetism. However, the Ampere force, by its nature, is a purely relativistic characteristic, whereas Ampere's law was formulated as a rough linear approximation, valid only for diffuse currents. However, for a rigorous definition of the magnetic field, one must consider relativism, the Ampere force, and its parametric relationship with the Coulomb field flux.