Fat Man was an implosion-type nuclear weapon with a solid plutonium core, and later with improved cores. The first Fat Man to be detonated was "The Gadget" in the Trinity nuclear test less than a …

Oct 10, 2023 · The second of two atomic bombs to be used in combat, the plutonium implosion-type weapon was released above Nagasaki on August 9, 1945. The bomb was a weaponized version of …

Nov 29, 2024 · Thus, the only way to use plutonium in a bomb was implosion. After a meeting at Los Alamos on July 17, 1944, it was agreed the gun-type weapon was no longer practical. The laboratory …

Nov 28, 2025 · Fat Man was a plutonium implosion-type bomb. It had a spherical core of plutonium-239 surrounded by high explosives, the force of which pushed inward rather than outward on detonation.

The spherical nature of the implosion design, with its plutonium pit surrounded by precisely engineered explosive lenses, meant that the bomb had to be put together from the inside out and preferably as …

The bombing of the Japanese city of Nagasaki with the Fat Man plutonium bomb device on August 9, 1945, caused terrible human devastation and helped end World War II.

The plutonium contained amounts of plutonium 240, an isotope with a rapid spontaneous fission rate. This necessitated that a different type of bomb be designed. A gun-type bomb would not be fast …