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صورة:Niels Bohr Albert Einstein by Ehrenfest.jpg


Description

Niels Bohr and Albert Einstein.
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).

Source

http://www.dfi.dk/dfi/pressroom/kbhfortolkningen/

Date

2006-05-23 (original upload date)

Author

Paul Ehrenfest
Original uploader was Graf at de.wikipedia

Permission
(Reusing this image)

PD-OLD.


Public domain This image (or other media file) is in the public domain because its copyright has expired.

This applies to the United States, Canada, the European Union and those countries with a copyright term of life of the author plus 70 years.


Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Côte d'Ivoire has a general copyright term of 99 years and Honduras has 75 years, but they do implement that rule of the shorter term.


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