Flocking Bird Sandbox
Explore emergent flocking. Lead a flock with your cursor and tune separation, alignment and cohesion to see collective motion emerge from simple local rules.
The interactive lab
Tools
Change a parameter. Follow a particle. See the physics unfold. Explore hands-on models of waves and fluid flow, with the mathematics behind every tool.
The Divergence Engine
Drop a cluster of nearly identical leaves into the same turbulent air and watch a tiny release spread become a different history.
The Travelling Wave Explorer
Find the rhythm of a travelling wave. Adjust amplitude, frequency and speed to see how its shape and wavelength respond.
Lamb–Oseen Vortex Explorer
See a viscous vortex reshape a passing flow. Explore circulation, diffusion and the paths of particles swept around its core.
Potential Flow Explorer
Build a flow from sources, sinks and vortices. Move the pieces and watch simple fields combine into surprising patterns.
Phantom Traffic Jam
One small brake can stop a whole highway. Seed a disturbance on a circular road and explore how reaction time turns it into a travelling traffic jam.