Electromagnetic waves, which describe the origin, propagation and properties of light, and questions of geometric optics are devoted to the first two sections. This allows further reference to them in the presentation of interference, diffraction and other sections of wave optics. After considering the theoretical material in each section there are questions for self-examination. This allows you to use the manual when conducting practical and laboratory classes, as well as for independent work of students during the semester and in preparation for exams. The textbook corresponds to the program of discipline "Physics" for students of all directions . Intended for undergraduate students. ;Griff:Admitted by the educational and methodological association for education in the field of metallurgy as a teaching aid for students of higher educational institutions studying in the direction of Metallurgy