Lead: The road to Hiroshima began in earnest not on Tinian or in Los Alamos or Chicago or Princeton, but in pre-war Nazi Berlin.

Intro: A Moment in Time with Dan Roberts.

Content: By the mid-1930s scientists had determined that the nucleus of the atom was not a single unit of matter but was made up of protons and neutrons. Neutrons, because they have no electrical charge were being used to explore the nature of the atomic nucleus. The Italian physicist Enrico Fermi began bombarding various elements with neutrons in 1934 and had concluded that relatively moderate changes could be made in the nucleus of one substance if hit with streams of neutrons from another.


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