Falstad's Interactive Physics and Math Applets: Visualize Waves, Quantum Mechanics, and More
Falstad Math and Physics Simulations
Paul Falstad's collection of educational applets brings math, physics, and engineering concepts to life through interactive simulations. Originally written in Java, most have been converted to JavaScript, making them accessible in any browser. Explore wave motion, acoustics, signal processing, electromagnetism, quantum mechanics, linear algebra, vector calculus, thermodynamics, mechanics, and more. Each applet offers a hands-on way to visualize complex phenomena, from ripple tanks and Fourier series to hydrogen atom orbitals and Lagrange points. The site also links to other valuable educational resources and simulations.
These are some educational applets I wrote to help visualize various concepts in math, physics, and engineering.
- amelius
This is a nice one to play with:
- sprinkly-dust
I have fond memories of fiddling with the wave simulations on this website during high school!
- peterus
He also made circuitjs, a very useful circuit simulator which I regularly use for prototyping. It lets you modify and probe elements in real time unlike spice simulators, so it is faster to modify a design in it.
I use spice simulators to check the final design since sometimes circuitjs can have instability issues in complex circuits involving stuff like the nonideal op amp.