| Description | Group photograph of the attendees of the third Solvay Conference on Physics, taken outside the Institute of Physiology in Leopold Park, Brussels, Belgium. Back row (left to right): W. L. Bragg, E. van Aubel, W. J, de Haas, E. Herzen, C. G. Barkla, P. Ehrenfest, M. Siegbahn, J. E. Verschaffelt, L. Brillouin. Middle row (left to right): M. Knudsen, J. Perrin, P. Langevin, O. W. Richardson, J. Larmor, H. Kamerlingh Onnes, P. Zeeman, M. de Broglie. Front row (left to right): A. A. Michelson, P. Weiss, M. Brillouin, E. Solvay, H. A. Lorentz, E. Rutherford, R. A. Millikan, M. Skłodowska-Curie. |