|Department:||Department of Theoretical Physics|
|Course director:||Zsuzsanna Varga|
|Prerequisities:||Theoretical Mechanics 1.|
|Type of assessment:||K, G|
The problem of the reference system in classical mechanics and in electrodynamics. Einstein's postulates of the theory of relativity, Lorentz transformation; Minkowski space, relativistic dynamics. Four-potential, the Lagrange function and the equation of motion of a charged particle in an external field. Field tensor and the Maxwell equations. Gauge invariance. Energy and momentum theorem, energy-momentum tensor. Static field, Poisson equation, multipole momenta. Magnetic field of stationary currents, magnetic momentum. Wave equation and plane wave solutions; spectral analysis. Polarisation properties of electromagnetic waves; Stoke's parameters. Retarded potentials, radiation field of localized charge distribution; dipole radiation, multipole radiation. The field of an arbitrarily moving point charge, Lienard-Wiechert potentials and the field strengths; The radiated power; the problem of radiation reaction.