Applets

Applets are written in the Java language and are intended to be cross platform programs that can be loaded via the browser to run dynamically within a browser. They are best utilised for computationally intensive applications rather than to add "bells and whistles" to a site.

The use of an applet and the parameters that can be changed via the HTML coding are illustrated in my Java site that also gives a brief background to applets and has some useful links.

The use of applets is also very common in demonstrating various aspects of physics e.g. http://www.physics.nwu.edu/ugrad/vpl/