Plik:Solvay conference 1930.jpgDescriptionSolvay conference 1930.jpg Sixth Solvay Conference on Physics, Brussels, 1930 standing, from left to right E. Herzen, É. Henriot, J. Verschaffelt
Plik:P. Langevin 1930 Solvay-Conf.jpgDescriptionP. Langevin 1930 Solvay-Conf.jpg Paul Langevin bei Sixth Solvay Conference on Physics, Brussels, 1930 Date 1930 Source Ausschnitt von http://chem