Unit 2 · Wave–Particle Duality
Chapter06
Matter Waves: de Broglie's Audacious Symmetry
If light can be a particle, can a particle be a wave?
Quantum Academy · presented by Dr. Quincy Quantenstein
CH 06X–Y
0:00 / 40:12OpeningTitle
Watch the lesson · Unit 2: Wave–Particle Duality
Matter Waves: de Broglie's Audacious Symmetry
If light can be a particle, can a particle be a wave?
- ≈ 40 min
- 57 scenes
- Narrated by Dr. Q
- Captions
Generated from the same script as the written lesson, so every word matches the text. Uses your device's voice when it has one; without one, the lesson plays silently with captions. Keys: Space play · ← → scenes · C captions · F full screen.
By the end you'll be able to
- Derive a photon's momentum, p = h/λ = E/c, and explain how Compton scattering confirmed it in 1923
- State de Broglie's 1924 hypothesis λ = h/p and use it to calculate wavelengths for electrons, neutrons, molecules and everyday objects
- Explain why a baseball shows no wave behaviour while an electron does, by comparing each wavelength with the structures it meets
- Describe how the Davisson–Germer and G. P. Thomson experiments of 1927 confirmed electron waves, and check the famous 54-volt result
- Show that Bohr's quantization rule is a standing-wave condition, nλ = 2πr, and state where that picture breaks down
- Explain why electron microscopes resolve far finer detail than light microscopes, and describe matter-wave interference with neutrons, atoms and giant molecules