Nobel Prize in Physics in 1925 2026-10-18
Awarded jointly to James Franck and Gustav Ludwig Hertz for electron-impact laws in chemical atoms. They received the prize in 1926; the Franck-Hertz experiment explains the evidence.[ref]
The Nobel Prize in Physics 1925 by Nobel Prize Outreach. Official award record: Franck and Hertz, electron impact and deferred receipt in 1926