This is the page for the Radiosity applet. This page requires that you have Java 1.3.1 or higher from Sun Microsystems (if you have Mac OS X, you're okay; if you're on any other system, go to and download a version of Java for your machine).

Please leave this window open, and do not navigate away from it. Radiosity will take awhile to load, and if you either close this browser window or navigate away from this page using this window, then Radiosity will shut down.

Note that Radiosity loads much of its program data dynamically, especially as the user opens a lesson. At this time, the program will appear to lag as it loads the lesson data; on a 56k modem, this could take as long as 5 minutes.