| Description | Group photograph of the attendees of the fourth Solvay Conference on Physics, taken outside the Institute of Physiology in Leopold Park, Brussels, Belgium. Back row (left to right): L. Brillouin, E. Henriot, Th. Dedonder, H. E. G. Bauer, E. Herzen, Aug. Piccard, E. Schrödinger, P. W. Bridgman, J. Verschaffelt. Middle row (left to right): P. Debye, A. Joffé, O. W. Richardson, W. Broniewski, W. Rosenhain, P. Langevin, G. de Hevesy. Front row (left to right): E. Rutherford, M. Skłodowska-Curie, E. H. Hall, H. A. Lorentz, W. H. Bragg, M. Brillouin, W. H. Keesom, E. van Aubel. |