| Description | Group photograph of the attendees of the second Solvay Conference on Physics, taken outside the Institute of Physiology in Leopold Park, Brussels, Belgium. Back row (left to right): J. É. Verschaffelt, M. von Laue, H. Rubens, R. Goldschmidt, E. Herzen, F. Lindemann, M. de Broglie, Pope, E. Grüneisen, G. Hostelet. Middle row (left to right): F. Hasenöhrl, J. H. Jeans, W. H. Bragg, M. Skłodowska-Curie, A. Sommerfeld, A. Einstein, M. Knudsen, P. Langevin. Front row (left to right): W. Nernst, E. Rutherford, W. Wien, J. J. Thomson, E. Warburg, H. Lorentz, M. Brillouin, W. Barlow, H. Kamerlingh Onnes, R. W. Wood, L. G. Gouy, P. Weiss. |