Light Propagation and Absorption

This lecture covers the propagation of light in different media, including dispersion, refraction, reflection, and absorption. It explains the behavior of light in conductors, semiconductors, and metals, focusing on the wave equations and attenuation. The lecture also discusses the reasons behind the color of the sky, clouds, and sunsets, based on Rayleigh and Mie scattering. Additionally, it delves into the interaction between electromagnetic waves and matter, particularly in dielectric materials. The concepts of polarization, resonance, and dispersion in materials are explored, along with the Fresnel equations for reflection and transmission at interfaces.