John Travoltage

I'm in the process of putting together a presentation on sound and music. While searching for some good interactive examples of waves, I found this website hosted by the University of Colorado - Boulder. They host a large number of java simulations for common phenomena (including math, physics, chemistry, biology) and they're all free. The quality varies greatly between applets, but some of them are really clever and make for great visualization. Just try out the My Solar System and you'll see what I mean. I may try to work the sound wave one into my presentation, or take the students to the computer lab to use a few of the applets together.