particles canvas
A free particle demo — play it in your browser, no install. A real-time 3D atomic particle simulation rendered with the HTML Canvas API and powered by a modular CPU-based physics engine.
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Controls: Top controls: pause/resume, single-step, reset simulation, reset forces
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Open the live demo Source on GitHubFrom the README
CPU Canvas 3D particle sandbox for teaching force laws by direct manipulation. It keeps the scene visual and interactive: enable one force, change constants, step time, and watch particles respond.
Not a real atomic, molecular, orbital, or SI-unit simulator. Units are toy units. Accuracy goal: stable, honest, teachable behavior.
Large frame gaps are capped so a paused tab does not explode the simulation.
e means softening. It prevents infinite forces at zero distance.
Potential is an estimate for classroom comparison.
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