What you are looking at
Somewhere in a rack, a single four-core x86 box runs twenty-two interactive simulations and serves them to the internet. I built the first one — a collapsing protostar — because an encyclopedia article was not cutting it. Then I got distracted. Human biology. Quantum physics. Emergent flocking. An Enigma cipher machine. A World War I map covering four years of front lines. A light clock that slows down when it moves. Everything here is interactive and runs in your browser. The server has not caught fire yet. I consider this a minor achievement.
Notable specimens
3 recommended first visitsBlack Hole
Accretion disk, photon ring, event horizon. Light itself orbits in a ring just above the point of no return. Ray-marched gravitational lensing in real time.
Supernova
Silicon fusion stops. The core collapses in under a second. The calcium in your bones was forged in exactly this event.
Action Potential
Sodium channels snap open. The wave propagates down the axon at 100 meters per second. This is the physical basis of thought.