For more information about Professor Shankar's book based on the lectures from this course, Fundamentals of Physics: Mechanics, Relativity, and Thermodynamics, visit bit.ly/1jFIqNu. Fundamentals of Physics, II (PHYS 201) Young's double slit experiment shows clearly that light is a wave. (In order to observe the wave behavior of light, the slit size and separation should be comparable or smaller than the wavelength of light.) Interference is described using real and complex numbers (in anticipation of quantum mechanics). Grating and crystal diffraction are analyzed. 00:00 - Chapter 1. Revisions to Geometric Optics 08:20 - Chapter 2. Young's double slit experiment 50:52 - Chapter 3. Interference and Diffraction of Light Complete course materials are available at the Open Yale Courses website: open.yale.edu/courses This course was recorded in Spring 2010. For more information about Professor Shankar's book based on the lectures from this course, Fundamentals of Physics: Mechanics, Relativity, and Thermodynamics, visit bit.ly/1jFIqNu.