HyperPhysics

While surfing the Internet, I came across a neat site run by the Department of Physics and Astronomy at Georgia State University called HyperPhysics. It has well executed sections on my favorite topics (i.e. sound & hearing AND light & vision), as well as many others. Basic and advanced principles are illustrated with clear, informative graphics and videos. I particularly liked the movie of the Kundt Tube Experiment for showing standing waves using cork shavings in a clear tube (see picture). Enjoy.

PS. GSU also runs a sister site called HyperMath that is similarly well done. You can navigate to it from the above link.