Tools

Python with NumPy, SciPy, Matplotlib, pandas, SymPy and scikit-learn, running entirely in the browser, with no server and nothing to install.

Python · Pyodide

A Jupyter-style workspace: a file explorer, importable modules, notebooks and matplotlib, with your projects saved in the browser.

Python · Notebooks · Pyodide

Write and run Web VPython simulations in the browser, with a local draft, downloadable files, example labs, and a sandboxed 3D output frame.

Web VPython · 3D

Program a Raspberry Pi Pico from the browser over USB or Bluetooth, with a file browser, examples, and a built-in terminal.

MicroPython · USB / Bluetooth

Write Arduino C, compile in the cloud, and flash an Uno over USB right from the browser, with examples, a language reference, and a live serial monitor.

C / C++ · USB · Chrome / Edge

Drag logic gates onto a schematic, wire them up, toggle the inputs, and watch the outputs light up, with a live truth table, save and load, and zip export.

Logic gates · Schematic · Simulation

Set a rocket's thrust and see the free-body diagram, the net force, the acceleration and the velocity change with it, as Newton's second law predicts. It has a guided run, free play on Earth, the Moon and Mars, and a landing challenge.

Forces · Newton's second law

Steer a rocket's thrust in any direction, near a planet or in deep space, and see one time step at a time how the forces make the net force, the net force makes the acceleration, and the acceleration changes the velocity, as the path builds up from the velocities.

Forces · Vectors · EOM #1

Fire a charged particle across regions of magnetic field, in 2D or 3D, and see what sets the force on it.

Magnetism · Right-hand rule

Fire particles through a velocity selector into a magnetic field and see where different masses, charges and speeds land.

Magnetism · Velocity selector

Fire a particle into a cyclotron and watch the magnetic field turn it while the electric field across the gap speeds it up, half a turn at a time, until an exit channel takes it out.

Magnetism · Particle accelerator