Diffraction: Theory and Formulas

This lecture covers the theory and formulas related to diffraction, including Fresnel and Fraunhofer diffraction, the Fresnel-Kirchhoff formula, Sommerfeld-Kirchhoff formula, Green's theorem, and the Helmholz-Kirchhoff integral. It explains the calculation stages for diffraction fields, the conditions for continuity of vector functions, and the integral theorems for diffraction. The lecture also discusses the transition from Fresnel to Fraunhofer diffraction, the geometric methods for calculating diffraction, and the diffraction patterns for different types of screens and openings.