Wilhelm
Röntgen

Universität München (Physics Tree)


Rudolf
Ladenburg

Princeton (Physics Tree)


Rudolf
Minkowski

UC Berkeley


Max
Born

Edinburgh (Physics Tree)


Niels
Bohr

Copenhagen University (Physics Tree)


Ralph H.
Fowler

Cambridge (Physics Tree)


Edward Arthur
Milne

Oxford (MathTree)




Elis
Strömgren

Copenhagen University (Physics Tree)




Donald E.
Osterbrock

UC Santa Cruz



Hector Osvaldo
Castañeda

Instituto Politecnico Nacional
(Options)

Hernando Efrain
Caicedo Ortiz

Uniautónoma del Cauca

Hector CastañedaX