Robert F. Christy
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Robert Frederick Christy was a Canadian-American theoretical physicist and later astrophysicist who was one of the last surviving people to have worked on the Manhattan Project during World War II. He
Robert F. Christy c. 1959
Robert Christy's wartime Los Alamos security badge
A model of a Christy pit
An artist's conception of the Project Orion spacecraft
Chicago Pile-1
Videos
Chicago Pile-1 was the first artificial nuclear reactor. On 2 December 1942, the first human-made self-sustaining nuclear chain reaction was initiated in CP-1 during an experiment led by Enrico Fermi.
Pupin Hall at Columbia University
One of at least 29 experimental piles that were constructed in 1942 under the West Stands of Stagg Field. Each tested elements incorporated into the final design.
Carpenter Augustus Knuth, in the process of jointing a wooden block for the timber frame