The Lorenz Attractor. This is a version of the Lorenz Attractor I programmed in 9th grade (a loooong time ago) using some early version of Turbo Pascal. This is a new version built with an alpha version of Processing developed at the MIT. It's really easy to implement, yet a bit slow.

The Lorenz Attractor displays the solution to a set of differential equations which shows some rather remarkable behavior and represents one of the landmarks in the field of Chaos. The equations describe the 2D flow of fluid in a simple rectangular box which is heated along the bottom.