Manhattan Project summary
Uncover the purpose of the Manhattan Project
Below is the article summary. For the full article, see Manhattan Project.
atomic bomb Summary
Atomic bomb, weapon with great explosive power that results from the sudden release of energy upon the splitting, or fission, of the nuclei of a heavy element such as plutonium or uranium. When a neutron strikes the nucleus of an atom of the isotopes uranium-235 or plutonium-239, it causes that
research and development Summary
Research and development, in industry, two intimately related processes by which new products and new forms of old products are brought into being through technological innovation. Research and development, a phrase unheard of in the early part of the 20th century, has since become a universal
World War II Summary
World War II, conflict that involved virtually every part of the world during the years 1939–45. The war was in many respects a continuation, after an uneasy 20-year hiatus, of the disputes left unsettled by World War I. The principal belligerents were the Axis powers—Germany, Italy, and Japan—and
Willard Frank Libby Summary
Willard Frank Libby was an American chemist whose technique of carbon-14 (or radiocarbon) dating provided an extremely valuable tool for archaeologists, anthropologists, and earth scientists. For this development he was honoured with the Nobel Prize for Chemistry in 1960. Libby, the son of farmer