caption doctoral_advisor thesis_year death_date death_place birth_place nationality field birth_date known_for prizes image article_title name thesis_title
john , connecticut dunning grave north cemetery sherman , fairfield county george b. pegram 1934 august 25 , 1975 key biscayne , florida shelby , nebraska american physics september 24 , 1907 atomic bomb medal for merit -lrb- 1946 -rrb- john . jpg dunning grave north cem sherman fairfield co conn john r. dunning
 john r. dunning the emission and scattering of neutrons
john r. dunning

john ray dunning -lrb- september 24 , 1907 -- august 25 , 1975 -rrb- 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 .
he was dean of the school of engineering and applied science at columbia university from 1950 to 1969 .
