Norman
Feather

Edinburgh


James
Chadwick

Cambridge




Karl
Przibram

Vienna University


Carl
Müller

Physikalisch-Technische Reichsanstalt


Peter
Pringsheim

Universität Berlin


Otto
Stern

Carnegie Institute of Technology


Patrick M.S.
Blackett

Imperial College


Niels
Bohr

Copenhagen University


Mark LE
Oliphant

University of Birmingham






Cary N.
Davids

Argonne National Laboratory








Gilbert N.
Lewis

UC Berkeley (Chemistry Tree)


Niels
Bohr

Copenhagen University













Bradley W.
Filippone

Caltech
(Options)

Bradley FilipponeX