Theory of Images and Equivalence Principle

This lecture covers the theory of images and the principle of equivalence in electromagnetism, focusing on perfect electrical and magnetic conductors, generalization of boundary conditions, and the method of images. It also discusses the symmetrization of Maxwell equations, electromagnetic duality, and the uniqueness theorem. The instructor explains the concept of duality, the presence of dual sources, and the calculation of far fields. Practical examples are provided to illustrate the application of the theory, such as closed surfaces and infinite closed surfaces. The lecture concludes with the application of the Huygens equivalence principle and the use of image theory to solve electromagnetic problems.