Keywords: EinsteinEhrenfestKamerlingh-OnnesWeiss.jpg Albert Einstein Paul Ehrenfest Paul Langevin Heike Kamerlingh Onnes and Pierre Weiss at Onnes's home in Leiden the Netherlands 1920 http //www-phase c-strasbourg fr/~morel/hpa/weiss htm Photo by Paul Ehrenfest's 1880-1933 designee PD-old Albert Einstein 1920 Paul Ehrenfest 1920 Paul Langevin 1920 Heike Kamerlingh Onnes 1920 Pierre Weiss 1920 Black and white photographs of people 1920 in the Netherlands ImageNote 6 55 426 20 20 1228 1512 2 Albert Einstein ImageNoteEnd 6 ImageNote 7 245 454 23 20 1228 1512 2 Paul Ehrenfest ImageNoteEnd 7 ImageNote 8 789 703 23 20 1228 1512 2 Paul Langevin ImageNoteEnd 8 ImageNote 9 983 411 20 28 1228 1512 2 Heike Kamerlingh Onnes ImageNoteEnd 9 ImageNote 10 1165 285 20 25 1228 1512 2 Pierre-Ernest Weiss ImageNoteEnd 10 |