Image: John R Dunning with Cyclotron in Pupin Hall at Columbia University
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Description: The cyclotron built by John R. Dunning in 1939, in Pupin Hall physics building basement at Columbia University with two other physicists: Enrico Fermi, center, and Dana P. Mitchell, left, approx 1940.
Title: John R Dunning with Cyclotron in Pupin Hall at Columbia University
Credit: Original publication: Unknown Immediate source: https://www.nytimes.com/2007/12/20/nyregion/20atom.html?_r=2&oref=slogin&
Author: AIP Emilio Segrè Visual Archives
Usage Terms: Fair use of copyrighted material in the context of John R. Dunning
License: Fair use
License Link: //en.wikipedia.org/wiki/File:John_R_Dunning_with_Cyclotron_in_Pupin_Hall_at_Columbia_University.jpg
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