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Magnetism 3D Lab
Interactive Electromagnetic Field Lab for Physics Classrooms
Build electromagnetic scenes in your browser — wires, solenoids, magnets, charged particles — and watch the field come alive in 2D and 3D: heatmaps, iron filings, field lines, Lorentz-force trajectories. Free, no install, runs on Chromebooks. Made for AP Physics, IB, and university E&M. It's the field lab that's been in physics classrooms since 2003 — now rebuilt browser-native.
In 2003 I wrote Magnetism 3D, a Delphi desktop app for visualizing magnetic fields. It's been used in US physics classrooms ever since — but it needs a Windows install, which is a dealbreaker in a Chromebook world.
So I rebuilt it from scratch in TypeScript + WebGL. It now runs in any browser — no install, no login, free.
You build scenes from primitives (wires, loops, solenoids, toroids, bar magnets, charged particles) and watch the field update live: heatmap, iron filings, Linear Integral Convolution, field vectors, 3D field lines. There's an Ampère's-law widget for closed-path integrals and 2D/3D Lorentz-force trajectories for cyclotron and mass-spec setups. Every scene is deep-linkable and embeds in Canvas/Notion/any LMS with a one-line iframe.
Would love feedback from teachers and physics folks especially — what would make this genuinely useful in your class?
About Magnetism 3D Lab on Product Hunt
“Interactive Electromagnetic Field Lab for Physics Classrooms”
Magnetism 3D Lab was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #78 on the daily leaderboard. Build electromagnetic scenes in your browser — wires, solenoids, magnets, charged particles — and watch the field come alive in 2D and 3D: heatmaps, iron filings, field lines, Lorentz-force trajectories. Free, no install, runs on Chromebooks. Made for AP Physics, IB, and university E&M. It's the field lab that's been in physics classrooms since 2003 — now rebuilt browser-native.
On the analytics side, Magnetism 3D Lab competes within Education, Data Visualization and Physics — topics that collectively have 82.9k followers on Product Hunt. The dashboard above tracks how Magnetism 3D Lab performed against the three products that launched closest to it on the same day.
Who hunted Magnetism 3D Lab?
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For a complete overview of Magnetism 3D Lab including community comment highlights and product details, visit the product overview.
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