![](http://www.alamy.com/thumbs/6/A9702E44-7265-4DC4-BB3C-039E35F71DF1/KYMR9G.jpg)
Portrait of Paul Ehrenfest (1880-1933), Physicist 2575986048 o
Size: 1334px × 1873px
Photo credit: © Len Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ancient, book, bygone, copy, cover, dedicated, editorial, ehrenfest, fabric, glasses, historic, history, illustration, institution, libraries, life, man, news, nostalgia, nostalgic, paul, photo, photograph, photography, physicist, physics, portrait, science, scientist, sepia, smithsonian, space, stock, textbook, understanding, vintage