Sandbox Physics

An open physics lab

Physics,in motion.

Change a parameter. Watch what happens.

Explore the labs

Nonspinning black hole. 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.

Francis Halzen, IceCube, and the worldwide effort to understand neutrinos. Eight stories. Three experiments. Follow the evidence.

Explore the Nobel feature

Just added

Laser Dynamics & Relaxation Oscillation

Oct 9, 2026

Where to begin?

All experiments 264

Mechanics

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

Waves & light

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

130 experiments

Fields & matter

\mathbf F=-\nabla U

Quantum

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