FeynLab: learn to read Feynman diagrams
Start here: Read your first Feynman diagram · Spot electrons, photons and antiparticles in nine quick questions. · About 3 minutes
Read your first Feynman diagram in about three minutes, then decode, assemble and audit 14 levels of real particle physics — from electron scattering to the Higgs boson. Free, with no ads and no account needed. Diffy measures product use to improve the service.
What kids learn
- The visual grammar of Feynman diagrams: fermion, photon, gluon, weak, and Higgs lines
- How forces act by exchanging virtual carrier particles
- Quark content and charge of hadrons like the proton, pion, and omega
- Testing reactions against conservation of charge, lepton number, and baryon number
- Spin and statistics: fermions and the Pauli exclusion principle versus bosons
- The Higgs field and discovery — with hypotheses like supersymmetry clearly flagged as unconfirmed
How it works
FeynLab is a multiple-choice quiz built around a real Feynman-diagram renderer. Some questions ask you to read a diagram; a build mode has you fill each labeled slot with the correct particle or line; and conservation levels have you audit charge, lepton, and baryon ledgers to rule a reaction allowed or forbidden. Difficulty ramps within each run, and stars reflect accuracy.
Kids can play without signing in; guest stars stay until you reload or close the page. A grown-up signs in once and adds a player for each kid, so FeynLab's stars and progress save to your account and follow you to any device.
Also try
- QuarkQuestAges 12–16
Zoom into the atom: quarks, forces, antimatter and the Higgs.
Play QuarkQuest → - AtomForgeAges 11–16
Explore atoms, ions and molecules in 14 quick chemistry levels.
Play AtomForge →
Ready to play FeynLab?
It's free and has no ads. Diffy measures product use to improve the service. Ages 13–18.