Interactive physics
Each lab is a working model of a real experiment. Change the setup, watch what happens and see why, all in your browser. No sign-up and nothing to install.
Quantum optics · guided tour
Entangled photon pairs, one at a time. Mark which slit each photon took, then "erase" that information after the photon has already landed. Sort the hits and watch interference fringes appear in the sorted subsets, even though the screen itself never changes.
Open the labIn the workshop
New experiments are being built and checked. Each one is tested against the physics before it goes up.
Danny Labs X makes interactive, browser-based physics labs for curious learners. The rule is simple: the physics comes first. Every lab starts from a written model of the experiment and its equations, and is checked by automated tests and a physics review before anything is drawn on screen.
The goal is labs you can trust and enjoy: honest about their simplifications, clear to explore, and nice to look at.
