![](http://www.alamy.com/thumbs/6/437DB412-F760-4073-9E90-DCDBABFB60CB/KE618X.jpg)
Niels Bohr Albert Einstein by Ehrenfest
Size: 1314px × 1902px
Photo credit: © Historic Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ancient, book, bygone, copy, cover, editorial, historic, history, illustration, news, nostalgia, nostalgic, photo, photograph, photography, space, stock, textbook, vintage