19. Quantum Mechanics I: The key experiments and wave-particle duality

For more information about Professor Shankar's book based on the lectures from this course, Fundamentals of Physics: Mechanics, Relativity, and Thermodynamics, visit http://bit.ly/1jFIqNu. Fundamentals of Physics, II (PHYS 201) The double slit experiment, which implies the end of Newtonian Mechanics is described. The de Broglie relation between wavelength and momentum is deduced from experiment for photons and electrons. The photoelectric effect and Compton scattering, which provided experimental support for Einstein's photon theory of light are reviewed. The wave function is introduced along with the probability interpretation. The uncertainty principle is shown arise from the fact that the particle's location is determined by a wave and that waves diffract when passing a narrow opening. 00:00 - Chapter 1. Recap of Young's double slit experiment 09:10 - Chapter 2. The Particulate Nature of Light 23:15 - Chapter 3. The Photoelectric Effect 31:19 - Chapter 4. Compton's scattering 36