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) The allowed energy states of a free particle on a ring and a particle in a box are revisited. A scattering problem is studied to expose more quantum wonders: a particle can tunnel into the classically forbidden regions where kinetic energy is negative and a particle incident on a barrier with enough kinetic energy to go over it has a nonzero probability to bounce back. 00:00 - Chapter 1. Review of Wave Functions 08:48 - Chapter 2. Particle on a ring 19:11 - Chapter 3. Particle in a Box 54:00 - Chapter 4. Scattering 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.