![](http://www.alamy.com/thumbs/6/050C317A-6FD0-416E-9250-26B1A0F93945/J47WP7.jpg)
Niels Bohr Albert Einstein2 by Ehrenfest
Size: 1309px × 1909px
Photo credit: © The History Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ancient, art, book, bygone, copy, cover, drawing, editorial, historic, history, illustration, line, map, news, painting, photo, photograph, photography, space, stock, textbook, vintage