Boundary Value Solution with Green'S Functions, and with Orthogonal Basis Functions. Expansion in Multipoles. Electrostatics in Matter, Magnetostatics, Magnetic Moment, Magnetostatics in Matter, Inductance Maxwell'S Equations, Scalar and Vectorial Potentials, Tensorial Analysis, Relativistics Nutation of Maxwell'S Equations, Energy and Momentum Tensor and Conservation Laws, Green'S Function of the Wave Equation, Em Radiation, Leinerd-Weichert Potential, Dipole Approximation, the Action of the Em Field.