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Concepts don't belong in textbooks. They belong on your screen, under your fingertips, reacting to your curiosity in real time.

I built Concepts Lab because I was tired of staring at static diagrams and pretending I understood what a double pendulum does at the edge of chaos. So I made one. Then I made it support five segments. Then I added projectiles, orbits, fractals, and I'm not done.

The idea is simple: every concept has a shape, a motion, a pattern. You shouldn't have to imagine it. You should be able to drag it, break it, crank the gravity up to 25 and watch everything fall apart. That's when you actually learn.

Why have it in books when you can have it in a playground?

Every simulation here is built from first principles - real equations, real numerical integration, real math. No shortcuts, no hand-waving. Just the concepts, rendered at 60fps so you can see what the universe is actually doing.

More experiments are coming. Waves, fields, atoms, quantum mechanics, relativity and beyond. The goal is to build every fundamental concept into something you can touch and play with.