Explore the experiments.
GhostSandbox is a free collection of interactive experiments in waves, particles, and generative art, created by Adam Gurley at AdamsLocal LLC. Change a rule, watch what happens, and ask why.
No account is needed. This guide works without JavaScript. The moving experiments need JavaScript, and some use WebGL. Sound starts only when you choose it.
The plate: sound makes shapes
The homepage's Chladni-inspired plate moves virtual sand toward the quiet lines in a blend of wave patterns. Change the pitch or choose one of the five mode pairs. Open “Explore the math” to read the equations and pitches.
Try: compare the (1,2) and (3,5) modes, then move the pitch between them. Notice where an organized pattern gives way to loose sand.
Limit: this is a mathematical visualization, not a calibrated metal plate. The Fibonacci mode pairs and 6.18 Hz scale factor are choices in this model.
The Pulse: hear the difference
With headphones, each ear receives a nearby tone and you hear a pulse. The speaker setting instead switches one tone on and off. Choose the listening mode and pulse rate, then press “Hear the pulse.” The same button stops the sound.
Try: compare the two pulse rates at a comfortable, low volume.
Limit: this is a listening experiment, not a therapy. The picture moves slowly rather than flashing at the pulse rate.
The Cube: watch particles find a shape
The Cube draws 34,000 particles. Lattice mode gathers them on a gyroid that morphs into related mathematical surfaces. Layers separates the particles into groups; settle moves them toward quiet spots; swirl pulls them around the center.
Try: compare lattice and settle. Drag or use the arrow keys to turn the cube and see the shape from another angle. The Colors menu changes its palette.
Limit: this is a particle model, not a fluid simulation or a measurement of a physical material.
The Vortex: steer a pattern
A funnel of 2,584 particles uses the golden angle to distribute points. Move to steer its center, tap to speed it up, reverse its direction, or choose a new pattern and palette.
Try: reverse the same pattern before generating a new one, so you can compare one change at a time.
Limit: the funnel is generative artwork. It does not model the fluid dynamics of a real whirlpool.
The Groove: grow a Turing pattern
The Gray-Scott reaction-diffusion model lets two virtual chemicals react and spread at different rates. Bands, spots, and rings emerge. Draw to carve paths; open tune to adjust look, feed, and kill. Colors, glow, drift, and fine change the presentation. Save exports a PNG.
Try: compare two named looks with sound off. Then, if you want sound, play the piano: each key changes the look and shifts the soundtrack's pitch. “Cinematic Rise” is by Adam Gurley, made with Suno.
Limit: this is a simulation of reaction rules, not real chemicals. The color bands and drift are artistic additions. It requires WebGL 2.
The Skull: play with an original artwork
Adam Gurley's original AdamsLocal skull becomes an animated artwork. Choose colors, tap the image to disturb its motion, freeze it, or save a PNG.
Try: keep a palette, interact with the picture, then freeze and save a frame you like.
Limit: the skull is a creative experiment, not a biological model.
GhostSandbox LIVE: tune a wave
LIVE is a playable poster. Choose “Enter without sound” to start quietly. Wave Lab draws the same sine equation used to produce its sound. Add a second wave, change frequency, amplitude, and phase, or choose a preset.
Try: choose the same note for the second wave and move phase to 180°. The two equal waves cancel in this model. Then try the “3 Hz higher” setting to see beats.
Interference places two speakers and a movable listener in a room six meters across. Light Show uses the settings for an artistic interpretation. Freeze, Calm, Save PNG, and Share link let you pause, soften, keep, or revisit the result.
Limit: the room model leaves out echoes and distance falloff and uses a sound speed of 343 m/s. Nothing measures your room: there is no microphone. Share links carry settings, not an exact recording of every animation frame.
Using what you find
The experiments offer ways to explore and explain patterns. Their pictures are not evidence that a physical claim is true. Keep the model's assumptions with any explanation and link to the experiment you used.
AI assistants can read this guide to help a visitor choose an experiment and understand its controls. Operating the canvas requires a capable browser; reading this page alone does not run the simulation. GhostSandbox does not currently provide an agent API or a benchmark for evaluating AI models.
The gallery's downloads are free for personal use. For business, product, or website use, ask first. The terms of use prohibit using the site, images, or output to train or test an AI model.
Created by Adam Gurley · AdamsLocal LLC.
Questions: adam@adamslocal.net.
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