At the monthly meeting on October 9, 2013, chapter member John Gray gave a presentation on quantum physics and the double slit experiement. Below are links to some YouTube videos on the topic presented by Richard Feynman.
Presentation from 1964 (worth it just to watch the intro):
Four part Feynman lecture from 1965 (each is a little over an hour long):
Part 1: http://youtu.be/eLQ2atfqk2c
Part 2: http://youtu.be/kMSgE62S6oo
Part 3: http://youtu.be/jNNXD7fuE5E
Part 4: http://youtu.be/UigjOJm6F9o