Scholars · Ages 18+ · university· λ = 410 nm

The Quantum World

Knock electrons out of metal with light, fire them one at a time through two slits and watch stripes appear from randomness, then climb hydrogen's energy ladder and explore its orbitals in 3D.

3 lessons 44 min 220 XP

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Lessons

1☀️Light comes in packets: photonsEach photon carries energy $h f$ , and one photon frees at most one electron.14 min70 XP
2⚛️The double slit: waves of matterSingle electrons land as dots, yet build up an interference pattern. Watching changes the result.15 min75 XP
3🌈Atoms, energy levels and spectraElectrons in atoms can only have certain energies, so atoms emit only certain colours.15 min75 XP