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1 day ago · During the war, the Manhattan Project ultimately produced the three bombs used (the Trinity gadget, Little Boy, and Fat Man), as well as an additional unused Fat Man bomb, making the average wartime cost per bomb around $500 million in 1945 dollars.
6 days ago · J. Robert Oppenheimer was the director of the laboratory at Los Alamos, New Mexico, where the atomic bomb was designed. The theoretical work of how the atomic bomb would function had to be converted into a practical weapon that could be dropped from an airplane and explode above its target.
- Michel Rouzé
1 day ago · On October 9, 1941, two months before the United States entered World War II, President Franklin D. Roosevelt approved a crash program to develop an atomic bomb. Ernest Lawrence brought Oppenheimer into what would become the Manhattan Project on October 21.
Sep 24, 2024 · The United States then used atomic bombs on Hiroshima and Nagasaki in Japan on August 6 and 9, respectively, killing about 210,000 people. This infographic describes these early bombs, how they worked, and how they were used.
- The Editors of Encyclopaedia Britannica
- In 1939, American scientists, many of whom had fled from fascist regimes in Europe, were aware of advances in nuclear fission and were concerned th...
- American physicist J. Robert Oppenheimer headed the Manhattan Project, with the goal of developing the atomic bomb, and Edward Teller was among the...
- The Manhattan Project produced the first atomic bomb. Several lines of research were pursued simultaneously. Both electromagnetic and fusion method...
- Although many physicists were opposed to the actual use of the atomic bomb created by the Manhattan Project, U.S. President Harry S. Truman believe...
Oct 3, 2024 · Shortly after the first use of the bomb, Oppenheimer wrote to Secretary of War Stimson to express his growing concern, shared by many of the scientists who worked on the Manhattan Project, about the military and political consequences of atomic weapons (Document E).
Sep 24, 2024 · One of the most controversial aspects of Oppenheimer's legacy is the decision to use atomic bombs on Hiroshima and Nagasaki in August 1945. Oppenheimer later expressed deep remorse over the bombings, famously quoting the Bhagavad Gita: "Now I am become Death, the destroyer of worlds."
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2 days ago · 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.
