Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For Educators · Electrostatics

Electrostatics for a water rocket

Built for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs. Simulate a water rocket live below — adjust the inputs and watch it respond, right in your browser.

Electromagnetics — Electrostatics StudioLive

superposition · potential + field lines

Controls

Click to place a charge, or drag one to move it. Red = potential from +, blue = −. White lines are the electric field.

▶ Run in Python

Data Inspector

Charges2

Net charge0

MethodSuperposition

Governing equation

V (r) = k i \sum \frac{q _{i}}{r _{i}}, k = 5000, \sum q_{i} = 0

Reading this result: The potential at any point is the superposition of every charge's k·q/r term, so overlapping fields simply add. Field lines run from high potential to low — out of + charges and into − charges — always crossing the equipotentials at right angles.

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Frequently asked questions

Is this good for educators?: Yes — this version of "Electrostatics for a water rocket" is framed for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.