![](http://www.alamy.com/thumbs/6/95C89B47-640E-40DF-B5AD-94B33FB02992/2WE0JMT.jpg)
Albert Einstein and Hendrik Antoon Lorentz visiting Paul Ehrenfest, Leiden, about 1922.
Size: 1585px × 1262px
Photo credit: © Zoom Historical / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, historic, historical, reference, vintage