Unless otherwise mentioned, the applets on this page are compatible with the most recent versions of Microsoft Internet Explorer, Mozilla Firefox, Netscape, and Opera. The full features may not be available on all browsers.
To view these applets you need at least the Java 2 Runtime Environment (J2RE) version 1.4.2.
You can
download J2RE v. 1.4.2 on the
Sun site.
Particles: this is an applet that simulates the trajectory of tiny "planets" around their "sun". It uses a very simple, Newtonian model.
Wacky Particles (new window): a little experiment with the same applet, different parameters, and some JavaScript. Works best with IE and Netscape, less features in Opera.
Older applets - Caution! the applets on this page may crash your navigator if you reload or restart them!