Uploaded January 2013 | Updated September 2026, 3 weeks ago

---

Niels Bohr develops an atomic model which incorporates quantum conditions. It successfully explains the radiation spectrum of the hydrogen atom, but is still too classical to give a complete description of the atomic realm. Louis de Broglie forges a path forward by proposing wave-particle duality for the electron.

The playlist: youtube.com/playlist?list=PL193BC0532FE7B02C