Paul Ehrenfest, Hendrik Antoon Lorentz, Niels Bohr and Heike Kamerlingh Onnes at his liquefactor, Leiden, 1925.

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Size: 1783px × 1122px
Photo credit: © Magite Historic / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archive, historic, reference, reportage, vintage