Sandbox Physics

An open physics lab

Physics,in motion.

Change a parameter. Watch what happens.

Explore the labs

A nonspinning black hole model with bent light, gravitational redshift and Doppler beaming.

Open black-hole Lab

2026 Nobel Prize in Physics

An invisible particle. A new view of the universe.

Meet Francis Halzen, IceCube and the worldwide effort to understand neutrinos. Read the stories, then try the experiments.

Explore the Nobel feature

Just added

Tusi Couple & Inner Rolling Tracer

Oct 22, 2026

Where to begin?

All experiments 479

Mechanics

\frac{d\mathbf p}{dt}=\mathbf F

108 experiments

Waves & light

\frac{\partial^2\psi}{\partial t^2}=c^2\nabla^2\psi

149 experiments

Fields & matter

\mathbf F=-\nabla U

102 experiments

Quantum

i\hbar\frac{\partial\psi}{\partial t}=\hat H\psi

120 experiments