Photographer unknown2018-09-212018-09-21http://172.16.52.76:80/cdm/ref/collection/coll8/id/98https://hdl.handle.net/20.500.12111/1155Albert Einstein in the Amsterdam laboratory of Pieter Zeeman, who is standing on Einstein's right. The person on Einstein's left is Paul Ehrenfest. The photograph dates to about 1920. Description on photograph's back: "f.l.t.r. P. Zeeman, 1865-1943, Einstein, P. Ehrenfest (1880-1933) [?in] Zeeman’s laboratory at Amsterdam, 1920?“B&WThis item is protected by copyright and/or related rights. However, for this item, either (a) no rights-holder(s) have been identified or (b) one or more rights-holder(s) have been identified but none have been located. Researchers are free to use this item in any way that is permitted by the copyright and related rights legislation that applies to their use. For more information, see https://rightsstatements.org/page/InC-RUU/1.0/?language=enEhrenfest, Paul, 1880-1933Einstein, Albert, 1879-1955Zeeman, Pieter, 1865-1943Image