Famed Scientist ...A second atomic leader, Dr. J. Robert Oppenheimer, left, met Actor Hume Cronyn, who depicts in the film, and watched Cronyn enact a dramatic scene following the Hew Mexico bomb test,. Dr. Oppenheimer , the brilliant University of California physicist, supervised vast atomic research at Los Alamos, New Mexico, and directed the test. Atomic Experts Visit Hollywood....During the filming of Metro-Goldwyn-Mayer＞s "The Beginning or the End" dramatic story of the atom bomb, atomic experts from all parts of the country evinced an interest in the film. June 4, 1953.