  The derivation of the Maxwell equations is reproduced whereby magnetic
charges are included. This ansatz yields the results: 1) Longitudinal Ampere
forces in a differential magnetostatic force law are improbable. Otherwise an
electric current would generate magnetic charges. 2) Simple magnetic and
electric induced polarization phenomena are completely analogous and are
described by a Laplace equation. 3) Magnetic charges are the topological
defects of a magnetic spin field similar like electric charges are the
topological defects of an electric field. The magnetic charges should be
interconnected with an elastic or inertial field which compensates the torque
field generated by the magnetic moments of the anisotropic distributed spins.
4) Permanent magnetic fields can be understood to be caused by magnetic
charges. Consequently, a moving permanent magnet represents a magnetic current
which generates an electric field. 5) The electromagnetic tensors of energy and
momentum have some additional terms which are written down generally. 6)
Nonlinear electro-thermodynamic systems may violate the second law of
thermodynamics. This is illustrated by an electric cycle with a data storing
FET invented by Yusa & Sakaki.
