The Lorenz Attractor
This is the "Face of Chaos." In 1963, Edward Lorenz tried to model atmospheric convection using three simple differential equations. He discovered that the system never settled down. It orbited two invisible points (the "eyes" of the butterfly wings) forever, never crossing the same path twice.
Sensitive Dependence
This tool runs two simulations side-by-side. * Blue Dot: Starts at X = 1.000. * Red Dot: Starts at X = 1.001.
For the first few seconds, they look locked together. Then, slowly, they drift. Suddenly, they are on opposite sides of the screen. This proves that long-term weather prediction is impossible. We can never measure the current temperature of every atom on Earth with infinite precision, so the errors will always explode.