George Eugene Uhlenbeck was a Dutch-American theoretical physicist, known for his significant contributions to quantum mechanics and statistical mechanics. He co-developed the concept of electron spin
Visualization of electron spin on a wall in Leiden
G.E. Uhlenbeck, H.A. Kramers, and S.A. Goudsmit circa 1928 at the University of Michigan in Ann Arbor
Hendrik Anthony "Hans" Kramers was a Dutch physicist who worked with Niels Bohr to understand how electromagnetic waves interact with matter and made important contributions to quantum mechanics and s
Hans Kramers in July-August 1928, Ann Arbor
Kramers (second row, fourth left) at Fifth Solvay Conference
Presentation of Part 10 of the Eerste Nederlandse Systematisch Ingerichte Encyclopaedie (1952). Left to right: Frederic von Eugen, Arnold Jan d'Ailly, Hendrik Jan Reinink, Hans Kramers