A Lorenz Attractor simulation. The Lorenz Attractor is a set of differential equations which can cause some pretty cool looking particle motion. Yay for Torus knots
This particular simulation uses simple Euler integration because I was too lazy to learn the more precise methods while I was coding it. I made the applet more interesting by having ρ oscillate between 0 and 28 and σ oscillate between 10 and 20. This can be toggled by pressing any key on the keyboard.
Click and drag the mouse to rotate the particles. Press any key on the keyboard to toggle oscillation.