Arnold Johannes Wilhelm
Sommerfeld

Universität München (Physics Tree)


Niels
Bohr

Copenhagen University (Physics Tree)


Erwin
Schrödinger

Universität Wien (Physics Tree)






Karl Taylor
Compton

MIT (Physics Tree)




James
Franck

Chicago


Henry DeWolf
Smyth

Princeton (Physics Tree)


Hugh Longbourne
Callendar

McGill (Physics Tree)


William Francis Gray
Swann

Bartol Research Foundation of the Franklin Institute (Physics Tree)


Joseph John
Thomson

Cambridge (Physics Tree)


Alexander William
Bickerton

Canterbury College in Christchurch (Physics Tree)


Arthur
Schuster

University of Manchester (Physics Tree)




Kenneth T.
Bainbridge

Harvard (Physics Tree)


Donald F.
Hornig

Princeton

Thomas Henry
Walnut

Syracuse
(Options)

Sidney Oscar
Kastner

NASA Goddard Space Flight Center (Astronomy Tree)

Thomas WalnutX