The prize was reserved and awarded in 1926 "for their discovery of the laws governing the impact of an electron upon an atom"

James Franck

1/2 of prize
Germany
born 1882, died 1964
CA - University of Chicago, Chicago, Illinois, USA
AA - University of Berlin (Humboldt-Universitat zu Berlin), Berlin, Germany & University of Gottingen, Gottingen, Germany
WA - University of Berlin (Humboldt-Universitat zu Berlin)

 

Gustav Ludwig Hertz

1/2 of prize
Germany
born 1887, died 1975
CA - Karl Marx University in Leipzig (University of Leipzig), Leipzig, Germany
AA - University of Berlin (Humboldt-Universitat zu Berlin), Berlin, Germany
WA - University of Berlin (Humboldt-Universitat zu Berlin)

• Nobel e-Museum Prize in Physics 1925
• Electron-Impact Ionization Cross Sections

James Franck:

• History and Nobel Prize Winners: Humboldt-Universitat Zu Berlin
• Das Gottinger Nobelpreiswunder (in German)
• University of Chicago Nobel Laureates
• "Light Absorption and Fate of Excitation Energy: Franck-Condon Principle" 
• Report of the Committee on Political and Social Problems Manhattan Project "Metallurgical Laboratory" University of Chicago, (The Franck Report) June 11, 1945