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John Ray Dunning (September 24, 1907 – August 25, 1975) was an American physicist who played key roles in the Manhattan Project that developed the first atomic bombs. He specialized in neutron physics, and did pioneering work in gaseous diffusion for isotope separation.
John R. Dunning was an American nuclear physicist whose experiments in nuclear fission helped lay the groundwork for the development of the atomic bomb. Dunning graduated from Nebraska Wesleyan University in 1929 and earned a Ph.D. in physics from Columbia University, New York City, in 1934.
- The Editors of Encyclopaedia Britannica
John Dunning è stato uno scrittore statunitense di saggistica e letteratura gialla. È noto per i suoi testi sull'età d'oro della radio e per la serie di gialli ambientati a Denver e incentrati sulla figura di un ex poliziotto, diventato libraio e bibliofilo, Cliff Janeway.
A few years after its invention in the early 1930s, John R. Dunning directed the development of a Columbia University cyclotron in the basement of Pupin Hall. Cyclotrons, also known as “atom smashers,” accelerate atoms through a vacuum to induce collisions at very high speeds—25,000 miles per second—via electromagnets.
24 set 2022 · On September 24, 1907, US-American physicist John Ray Dunning was born. Dunning played key roles in the Manhattan Project that developed the first atomic bombs. He specialized in neutron physics, and did pioneering work in gaseous diffusion for isotope separation.
John R. Dunning (1907-1975) was an American physicist. Dunning gained the reputation in his small community of Shelby, Nebraska as the town’s smartest kid. At the age of 10 he blew his home town’s electrical system while testing out his invention called the “electric arc.”
24 lug 2023 · Upon arriving in the U.S., Bohr reported his news, and word of the discovery quickly spread among Columbia’s physics faculty, which included II Rabi, Enrico Fermi, Willis Lamb, and John R. Dunning.
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