Falstad Simulations
Paul Falstad's collection of browser applets simulating circuits, waves, quantum mechanics, and acoustics, beloved by physics students for decades.
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Real-Time Wave Tracing
An interactive wave simulation that traces how waves spread and bounce in real time, a hands-on way to watch wave physic…
Ocean Wave Simulation
A browser-based ocean wave simulation that renders rolling swells in 3D with WebGL, easy to sit and watch or to poke at…
Circuit Simulator
A browser-based electronic circuit simulator where you wire up resistors, capacitors, and logic gates and watch current…
Traffic Flow Simulator
A microsimulation of traffic flow where you adjust parameters on a ring road and watch stop-and-go waves form from indiv…
Relativistic Spaceship
An interactive special relativity simulator where you accelerate a spaceship toward light speed and watch time dilation,…
Solar Sandbox
A free space sandbox with real gravity: build a solar system, throw a moon at the Earth, or let two galaxies collide and…
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