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Falstad

falstad.com

A collection of educational applets for visualizing concepts in math, physics and engineering, covering topics such as oscillations, acoustics, signal processing, electricity and magnetism and quantum mechanics. The applets were originally written in Java but have mostly been converted to JavaScript.

Falstad

falstad.com

An electronic circuit simulator that displays an animated schematic of a simple LRC circuit, with colors indicating voltage and ground and moving yellow dots indicating current. Components can be clicked or edited, and the Circuits menu contains sample circuits.