James Franck was a German physicist who won the 1925 Nobel Prize for Physics with Gustav Hertz "for their discovery of the laws governing the impact of an electron upon an atom". He completed his doctorate in 1906 and his habilitation in 1911 at the Frederick William University in Berlin, where he lectured and taught until 1918, having reached the position of professor extraordinarius. He served as a volunteer in the German Army during World War I. He was seriously injured in 1917 in a gas attack and was awarded the Iron Cross 1st Class.
Franck in 1925
Die Bonzen, left to right: Max Reich [de], Max Born, James Franck and Robert Pohl in 1923
Four Nobel Prize laureates. Franck between Niels Bohr and Albert Einstein, with Isidor Isaac Rabi in 1954
Gustav Ludwig Hertz was a German experimental physicist and Nobel Prize winner for his work on inelastic electron collisions in gases, and a nephew of Heinrich Hertz.
Hertz in 1925