This lecture covers the Poynting vector, energy density, irradiance, oscillating dipole radiation, power radiated by a classical dipole, EM propagation in matter, Maxwell equations in matter, wave equations in matter, dielectric constant, isotropic vs. anisotropic materials, nonlinear optics, absorption, harmonic oscillator model, atomic polarizability, refractive index, natural linewidth, and classical electrodynamics.