Labs
Seven simulation and emulation instruments: waves, gravity, quantum tunnelling, a neuron, enzyme kinetics, a learning network and a CHIP-8 machine.
DemoRipple tankInterference, diffraction and refraction on a two-dimensional wave grid you can draw on.Wave equation, finite differences
DemoOrbitsGravity between a few bodies, from the figure-eight orbit to chaotic three-body ejection.Symplectic leapfrog integration
DemoWavepacketA quantum particle meets a barrier: reflection, tunnelling and resonance.Split-step Fourier, written-in FFT
DemoNeuronAction potentials, refractory periods and channel blockers in the classic squid-axon model.Hodgkin–Huxley, Runge–Kutta
DemoEnzyme kineticsInhibition changes a rate curve; a feedback loop makes glycolysis oscillate.Michaelis–Menten, Sel’kov oscillator
DemoNeural networkA small network learns to separate spirals, rings and quadrants while you watch.Backpropagation with Adam
DemoCHIP-8Play, step through and rewrite programs on a 1977 virtual machine.Interpreter, assembler, debugger