Optical Propagation in Materials

This lecture covers the propagation of light in different materials, including solid dielectrics, conductors, semiconductors, and metals. It explains concepts such as refraction, absorption, attenuation, and dispersion, as well as the behavior of light in the atmosphere. The instructor discusses the wave equation, the Drude model for conductivity in metals, and the Rayleigh and Mie scattering phenomena. The lecture also explores the interaction between electromagnetic waves and matter, the atomic model of dispersion, and the polarization of atoms. Practical applications, such as measuring fine particles using laser beams, are also presented.