$ open ~/projects/harmonic-geometry

Harmonic Geometry

Cymatics & standing-wave lab

drwxr-xr-xlabs

A physics-grounded lab for cymatics and harmonic geometry — seeing the geometry that sound draws in matter, from sand on a Chladni plate in 2D to volumetric standing-wave fields in 3D, plus WebSerial control for a 3D-printable acoustic levitator.

A live standing-wave field from Harmonic Geometry: thousands of teal and gold points tracing a vibrating surface.

In the lab

Captured from the running app — every pattern here is computed from real wave physics, not drawn.

Harmonic Geometry home page with a live standing-wave field rendered as glowing teal and gold points.
A live standing-wave field on the landing page
The Chladni Plate Explorer: simulated sand settling onto the nodal lines of a square plate, with mode and frequency controls.
Chladni plates — sand settles onto the nodal lines
3D Standing-Wave Fields view: nodal surfaces filling a resonant cavity, with cavity-mode controls.
Nodal surfaces filling a resonant 3D cavity
Close-up of the volumetric cavity field: intersecting planes of colored points.
The cavity field up close

Under the hood

  • /explore/2d — Chladni plates, sand simulation, tone generator, and mic input
  • /explore/3d — cavity nodal surfaces and Gor'kov levitation fields
  • /lab — mode-ladder sweeps and a persisted observation log
  • /learn — physics concepts linked to the live demos
  • /history — Chladni, Sophie Germain, Hans Jenny, and modern levitation research
  • /device — WebSerial panel for the TinyLev hardware build
$ cd ..