A growing library of run-anywhere simulations of active & soft matter. Open one in your browser, press Run all, and watch flocks form, magnets flip, and matter sort itself — then turn the dials yourself. No installs, ever.
Built by a physicistPure PythonRuns in Google ColabNothing to installCancel anytime
What's inside today
Every drop is a self-contained notebook with real animations and plain-language explanations. Three are ready the moment you join — and a new one lands each week.
WEEK 1
Motility-Induced Phase Separation
Self-propelled particles that only ever push each other apart — yet they spontaneously clump into dense and dilute phases. Separation from pure motion, no stickiness.
WEEK 2
Vicsek Flocking
Thousands of movers, one rule: follow your neighbours. Watch a flock snap into being, then turn up the noise and find the exact tipping point into chaos.
WEEK 3
The Ising Model
A grid of tiny magnets. Cool it past the critical temperature and the whole sheet locks into one direction — the textbook phase transition, animated and yours to map.
How it works
If you can press a button, you can run these.
Open in Colab
Upload the notebook to Google Colab — one click, right in your browser. Or run it locally if you prefer.
Run all
Hit Runtime ▸ Run all. The instant result loads from bundled data, or simulate it live from scratch.
Watch & tweak
See the physics animate, then turn the dials — noise, temperature, density — and watch the transition move.
Why it matters
These are the simplest models behind some of the deepest ideas in modern physics — emergence, self-organization, and phase transitions. The same mathematics describes bird flocks, bacterial swarms, magnets, and melting. Here you don't just read about it — you run it, break it, and watch order appear out of nothing.
$5/month
Start with a free week. Cancel anytime.
A fresh run-anywhere simulation every week
The full library so far — MIPS, Vicsek & Ising — instantly
Every notebook + instant-result data, yours to keep & tweak
