Group photograph from the Solvay Physics Conference, Brusels, 1933.

Group photograph from the Solvay Physics Conference, Brusels, October 1933. As the signatures around the edge show, the attendees were the great men and women of physics in the 1930s. Attending were such luminaries as James Chadwick (1891-1974), Ernest Rutherford (1871- 1937), Marie Curie (1867-1934) and her daughter Irene Joliot-Curie (1897-1956), P Langevin (1872-1946), PMS Blackett (1897-1974), Lise Meitner (1878-1968) and E Bauer.