Ludwig
Boltzmann

Vienna University (Physics Tree)


Paul
Ehrenfest

Leiden (Physics Tree)


Christian
Christiansen

Copenhagen University (Physics Tree)


Joseph John
Thomson

Cambridge (Physics Tree)




Niels
Bohr

Copenhagen University (Physics Tree)


Hendrik Antonie
Kramers

Leiden (Physics Tree)



John Henry
Lupinski

General Electric Research Laboratory
(Options)

John LupinskiX