Arnold Johannes Wilhelm
Sommerfeld

Universität München (Physics Tree)


Niels
Bohr

Copenhagen University (Physics Tree)


Erwin
Schrödinger

Universität Wien (Physics Tree)










Johannes N.
Bronsted

Copenhagen University








William Draper
Harkins

University of Montana, University of Chicago




Hugh Christopher
Longuet-Higgins

University of Sussex




Gilbert N.
Lewis

UC Berkeley


James
Franck

Chicago






Frederic Poole
Gorham

Brown (ID Tree)










Percy Williams
Bridgman

Harvard (Physics Tree)


Niels
Bohr

Copenhagen University (Physics Tree)


John Clarke
Slater

University of Florida


Arnold Johannes Wilhelm
Sommerfeld

Universität München (Physics Tree)







Stephen Kevin
Gray

Argonne National Laboratory
(Options)

Jonathan J.
Foley

William Paterson University

Stephen GrayX