Joseph John
Thomson

Cambridge (Physics Tree)


Arthur Joachim
von Oettingen

Kaiserliche Universität Dorpat (Meteorology Tree)


Ludwig
Boltzmann

Vienna University (Physics Tree)


Władysław
Natanson

Uniwersytet Jagielloński (Physics Tree)


Heinrich Friedrich
Weber

ETH Zürich (Physics Tree)


Alfred
Kleiner

Universität Zürich (Physics Tree)


Albert
Einstein

Princeton (Physics Tree)


Leopold
Infeld

University of Toronto


Wlodzimierz
Kolos

University of Warsaw

Bogumił
Jeziorski

University of Warsaw
(Options)

Robert
Moszyński

University of Warsaw

Michał
Tomza

University of Warsaw

Piotr S.
Zuchowski

Nicholas Copernicus University, Torun, Poland (Chemistry Tree)

Bogumił JeziorskiX