Study collection · single-file instruments · computed, not decorated
six pages, each a single dependency-free .html file. the physics runs in the page — open any instrument and view source.
The Solar System as running clockwork: JPL orbital elements, Kepler's equation solved by Newton's method every frame.
A specimen sheet of mechanical key switches, its oscilloscope traced by a live damped-spring simulation of the stem.
A spectral colorimeter: paint a light, watch the CIE 1931 observer crush it to three numbers, then meet a metamer the eye cannot tell apart.
A free steel plate whose eigenmodes are solved at load by Ritz's 1909 method; sand walks to the silent lines.
A sheet of virtual heart muscle on chart paper: one premature beat, placed in the vulnerable window, and the rhythm becomes a rotor.
Three pieces of glass on a cyanotype sheet: damped least squares bends six radii, ten thousand traced rays a step, until the blur reaches the Airy disc.