General Physics: Quantum - Image Formation and Geometrical Optics

This lecture covers the graphic construction of images, features of pictures, and geometrical optics, including spherical mirrors. It explains the laws of reflection, Huygens principle, Fermat principle, and sign conventions. The application of geometric optics, optical instruments, and wavefronts are also discussed, along with the concept of minimal travel time for light rays. The lecture further explores the application of the Huygens principle in reflections and the formation of images by spherical mirrors, both concave and convex. Various ray paths and image formations are illustrated, emphasizing the importance of sign conventions in determining the nature of images.