#physics

Eigendrum

Draw a shape and hear it as a real drum. Uses finite element analysis to simulate actual vibration modes—every frequency comes from your outline, not a sample.

Eigendrum - draw a shape and hear it as a drum

Interactive tool combining finite element simulation, physics, and audio synthesis. Draw any shape and hear it as a real drum with physically accurate vibration modes and overtones.

So You Want to Learn Physics

Hand-curated self-study physics curriculum by Susan Rigetti. A comprehensive learning guide used by 600,000+ readers to learn physics from first principles, with an updated second edition (2021).

The Physics Classroom

Physics tutorials and interactives. Clear explanations of physics concepts.

Falstad

Math and physics applets. Interactive simulations for learning.

MIT Physics OCW

Free MIT physics courses. From mechanics to quantum field theory.

Feynman Lectures

Richard Feynman's legendary physics lectures. Free online edition.

HyperPhysics

Encyclopedic physics reference. Concept maps connecting physics topics.

arXiv

Preprint server for physics, math, and CS. Where new research appears first.