---
title: "Sandbox Physics — Physics, in motion"
description: "Physics experiments in your browser. Explore orbits, light, matter and quantum states. Change a parameter and watch what happens."
canonical_url: "https://sandboxphysics.com/"
language: "en"
page_type: "homepage"
alternate_languages:
  zh-CN: "https://sandboxphysics.com/zh/"
last_modified: "2026-10-18"
---

An open physics lab

# Physics,*in motion.*

Change a parameter. Watch what happens.

[Explore the labs](https://sandboxphysics.com/labs/)

Nonspinning black hole. Bent light, gravitational redshift and Doppler beaming.

[Open black-hole Lab](https://sandboxphysics.com/labs/black-hole-light/)

2026 NOBEL PRIZE IN PHYSICS

## An invisible particle. A new view of the universe.

Francis Halzen, IceCube, and the worldwide effort to understand neutrinos. Explore the stories and try the experiments.

[Explore the Nobel feature](https://sandboxphysics.com/nobel/2026/physics/)

Nobel · Read the evidence

## [From thermal radiation to quantum information](https://sandboxphysics.com/stories/quantum-evidence/)

Historical observations, original arguments and the limits of teaching models.

Just added

## [Rolling Wheel & Geometric Phase](https://sandboxphysics.com/labs/rolling-holonomy/)

Oct 18, 2026 [Open the latest Lab](https://sandboxphysics.com/labs/rolling-holonomy/)

## Where to begin?

[All experiments 451](https://sandboxphysics.com/labs/)

### [Mechanics](https://sandboxphysics.com/topics/mechanics/)

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

- [Free Fall & Measuring Gravity](https://sandboxphysics.com/labs/free-fall/)
- [Projectile Flight Designer](https://sandboxphysics.com/labs/projectile-flight/)
- [Inclined Plane & Friction](https://sandboxphysics.com/labs/inclined-plane/)
- [One-Dimensional Collision Bench](https://sandboxphysics.com/labs/collision-bench/)
- [Mass–Spring Oscillator](https://sandboxphysics.com/labs/mass-spring/)
- [How Orbits Take Shape](https://sandboxphysics.com/labs/orbit/)

[94 experiments](https://sandboxphysics.com/topics/mechanics/)

### [Waves & light](https://sandboxphysics.com/topics/waves-and-optics/)

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

- [Optical Boundary Explorer](https://sandboxphysics.com/labs/optical-boundary-explorer/)
- [Rainbow Caustic Observatory](https://sandboxphysics.com/labs/rainbow-laboratory/)
- [Camera Obscura](https://sandboxphysics.com/labs/camera-obscura/)
- [Coherent Wave Composer](https://sandboxphysics.com/labs/coherent-wave-composer/)
- [Young Double-Slit Bench](https://sandboxphysics.com/labs/young-double-slit-bench/)
- [Michelson Precision Lab](https://sandboxphysics.com/labs/michelson-precision-lab/)

[149 experiments](https://sandboxphysics.com/topics/waves-and-optics/)

### [Fields & matter](https://sandboxphysics.com/topics/fields-and-matter/)

$\mathbf F=-\nabla U$

- [Make an Electric Field Visible](https://sandboxphysics.com/labs/electric-field/)
- [A Charge Bending through Fields](https://sandboxphysics.com/labs/charged-particle/)
- [Electron Wavelength & Voltage](https://sandboxphysics.com/labs/electron-wavelength/)
- [Electron Diffraction & Reciprocal Space](https://sandboxphysics.com/labs/electron-diffraction/)
- [TEM Bright Field, Dark Field & SAED](https://sandboxphysics.com/labs/tem-mode-selector/)
- [SEM Secondary-Electron Topography](https://sandboxphysics.com/labs/sem-topography/)

[102 experiments](https://sandboxphysics.com/topics/fields-and-matter/)

### [Quantum](https://sandboxphysics.com/topics/quantum/)

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

- [Quantum State & Born Measurement](https://sandboxphysics.com/labs/qubit-state/)
- [Stern–Gerlach Sequence](https://sandboxphysics.com/labs/stern-gerlach-sequence/)
- [Wave Packet & Uncertainty](https://sandboxphysics.com/labs/wave-packet-uncertainty/)
- [Quantum Harmonic Oscillator](https://sandboxphysics.com/labs/quantum-harmonic-oscillator/)
- [Which Path & Quantum Eraser](https://sandboxphysics.com/labs/quantum-eraser/)
- [Hong–Ou–Mandel Two-Photon Interference](https://sandboxphysics.com/labs/hong-ou-mandel/)

[106 experiments](https://sandboxphysics.com/topics/quantum/)

Field notes

## [One box, three worlds](https://sandboxphysics.com/stories/yu-deng-fields-medal)

From colliding particles to the equations of a fluid.

[Read the story](https://sandboxphysics.com/stories/yu-deng-fields-medal)