Gen. Leslie R. Groves
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Nov 7, 2023 · Little Boy was a gun-type nuclear bomb deployed over Hiroshima, while Fat Man was an implosion-type bomb deployed over Nagasaki. We are eagerly awaiting the 2023 release of Christopher Nolan’s “Oppenheimer”—a film exploring the Manhattan Project.
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"Fat Man" (also known as Mark III) was the codename for the type of nuclear weapon the United States detonated over the Japanese city of Nagasaki on 9 August 1945. It was the second of the only two nuclear weapons ever used in warfare, the first being Little Boy, and its detonation
Fat Man and Little Boy is commonly used to refer to the bombs collectively used in the atomic bombings of Hiroshima and Nagasaki. It may also refer to: Fat Man and Little Boy, 1989 film; Fat Man and Little Boy (The Simpsons), 2004 episode of The Simpsons TV series
Technical description, photographs, and video of atomic bombs Little Boy and Fat Man dropped on Hiroshima and Nagasaki in August 1945.
Oct 20, 1989 · Fat Man and Little Boy: Directed by Roland Joffé. With Paul Newman, Dwight Schultz, Bonnie Bedelia, John Cusack. This film reenacts the Manhattan Project, the secret WWII project, and the first atomic bombs designed, built, and tested in Los Alamos.
On 6 August, a Little Boy was dropped on Hiroshima. Three days later, a Fat Man was dropped on Nagasaki. Over the next two to four months, the effects of the atomic bombings killed 90,000 to 146,000 people in Hiroshima and 60,000 to 80,000 people in Nagasaki; roughly half occurred on the first day.
Fat Man detonated at an altitude of 1,650 feet over Nagasaki with a yield of 21 kilotons, about 40 percent more powerful than Little Boy had been. It did so almost directly above the Mitsubishi factories that were the city’s primary targets, rather than over the residential and business districts further south.
While most people are familiar with the names of “Little Boy” and “Fat Man” as the atomic weapons used over Japan, they may not know how different the respective technologies of each bomb were and why this difference mattered.
Jun 21, 2024 · The original plan had been to use a gun-type design (Thin Man) like that used in Little Boy, the U.S.’s uranium bomb. That design fired one piece of uranium -235 at another, combining the two amounts to create a critical mass.
Jul 15, 2021 · For instance, records in the NSRC refer to “the gun gadget” (Little Boy) and “the implosion gadget” (Fat Man). In most cases, though, the term applies to the imploding bomb. Little Boy is the gun-type uranium weapon that was released above Hiroshima, Japan on Aug. 6, 1945.
