From a single vibrating string to the eleven-dimensional M-theory web through 43 interactive demonstrations. Watch vibration modes become particles, curl six dimensions into Calabi–Yau shapes, end open strings on D-branes, and project a universe onto its boundary — all in your browser.
See also: Relativity for the gravity that strings quantize, Particle Physics for the Standard Model that compactifications must reproduce, and Quantum Mechanics for the harmonic oscillators inside every string mode.
From point particles to strings — and why quantum gravity demands them
One string, many particles — vibration modes as the periodic table of physics
A string sweeps out a surface in spacetime — and interactions become topology
Kaluza–Klein towers, winding modes, and why the math demands ten dimensions
The six hidden dimensions, curled into shapes that decide the laws of physics
Supersymmetry tames the tachyon — and five consistent theories emerge
T-duality, S-duality, and the eleven-dimensional web connecting everything
The surfaces where open strings end — and where gauge theories live
A universe on the boundary — gravity in the bulk equals gauge theory on the edge
Counting black hole microstates string by string — and the landscape of vacua