Math & Physics Playground

Real equations, not decoration: rotational kinematics, RK4 chaos, symplectic orbital mechanics, escape-time fractals. The web port of a set of Python/pygame desktop apps built earlier — same math, reimplemented for the browser.

Spiral Art Generatorart

Rotating chords + phase offset = spiral/moiré patterns.

Mandelbrot Setmath

z = z^2 + c, escape-time coloring.

Fourier Epicyclesmath

A square wave built from rotating circles.

Euler's Identitymath

e^(i*theta) = cos(theta) + i*sin(theta).

Golden Ratio Spiralmath

Fibonacci squares + a tunable logarithmic spiral.

Lissajous Curvesmath

Two perpendicular sinusoids at different frequencies.

Double Pendulumphysics

Chaos: two nearly-identical pendulums diverge.

Orbital Mechanicsphysics

Real inverse-square gravity, symplectic integration.

Simple Pendulumphysics

The real nonlinear pendulum, not the small-angle approximation.

Spring-Mass Oscillatorphysics

Hooke's law with live KE/PE energy bars.

Projectile Motionphysics

Kinematics, with optional quadratic drag.