Here are a couple applets I wrote while still in high school. This was back before java 2, and before I knew anything about java guis.
Fold
An applet that shows the pattern emerging when a strip of paper is folded repeatedly. I got the idea for this from the pages between chapters of a hardcover edition of Michael Chrichton's Jurassic Park (I don't remember which edition or publisher).
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Wave
An applet that shows propagation of waves in a rubber sheet (click on it!)
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