Ofbyld:Niels Bohr Albert Einstein3 by Ehrenfest.jpg

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Beskriuwing

en:Niels Bohr and en:Albert Einstein Foto by Paul Ehrenfest (1880-1933).

The picture was taken at Ehrenfest's home in Leiden, the occasion was most likely the 50th anniversary of Hendrik Lorentz' doctorate (December 11, 1925)
Boarne http://www.dfi.dk/dfi/pressroom/kbhfortolkningen/ (and other sites as well)
Auteur en:Paul Ehrenfest

Lisinsje

Public domain

The author died in 1933, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 80 years or fewer.

You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that a few countries have copyright terms longer than 80 years: Mexico has 100 years and Jamaica has 95 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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