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  2. Metallurgical Laboratory - Wikipedia

    en.wikipedia.org/wiki/Metallurgical_Laboratory

    On 20 December, soon after the Japanese attack on Pearl Harbor that brought the United States into the war, Compton was placed in charge of the plutonium project. [9] [10] Its objectives were to produce reactors to convert uranium to plutonium, to find ways to chemically separate the plutonium from the uranium, and to design and build an atomic ...

  3. List of free and open-source Android applications - Wikipedia

    en.wikipedia.org/wiki/List_of_free_and_open...

    Android phones, like this Nexus S running Replicant, allow installation of apps from the Play Store, F-Droid store or directly via APK files.. This is a list of notable applications (apps) that run on the Android platform which meet guidelines for free software and open-source software.

  4. Pit (nuclear weapon) - Wikipedia

    en.wikipedia.org/wiki/Pit_(nuclear_weapon)

    The pits of the first nuclear weapons were solid, with an urchin neutron initiator in their center. The Gadget and Fat Man used pits made of 6.2 kg of solid hot pressed plutonium-gallium alloy (at 400 °C and 200 MPa in steel dies – 750 °F and 29,000 psi) half-spheres of 9.2 cm (3.6 in) diameter, with a 2.5 cm (1 in) internal cavity for the initiator.

  5. Fat Man - Wikipedia

    en.wikipedia.org/wiki/Fat_Man

    Fat Man Replica of the original Fat Man bomb Type Nuclear fission gravity bomb Place of origin United States Production history Designer Los Alamos Laboratory Produced 1945–1949 No. built 120 Specifications Mass 10,300 pounds (4,670 kg) Length 128 inches (3.3 m) Diameter 60 inches (1.5 m) Filling Plutonium Filling weight 6.2 kg Blast yield 21 kt (88 TJ) "Fat Man" (also known as Mark III) was ...

  6. B Reactor - Wikipedia

    en.wikipedia.org/wiki/B_Reactor

    The project was a key part of the Manhattan Project, the United States nuclear weapons development program during World War II. Its purpose was to convert part of its natural uranium fuel into plutonium-239 by neutron activation , for use in nuclear weapons.

  7. An unsettling photo of a US physicist cheerfully holding the ...

    www.aol.com/2016-05-16-an-unsettling-photo-of-a...

    The 1945 photo shows Manhattan Project physicist Harold Agnew holding the heart of one of the most devastating weapons in the world.

  8. Demon core - Wikipedia

    en.wikipedia.org/wiki/Demon_core

    The demon core (like the core used in the bombing of Nagasaki) was, when assembled, a solid 6.2-kilogram (14 lb) sphere measuring 8.9 centimeters (3.5 in) in diameter.. It consisted of three parts made of plutonium-gallium: two hemispheres and an anti-jet ring, designed to keep neutron flux from "jetting" out of the joined surface between the hemispheres during implosi

  9. Chemistry and Metallurgy Research Replacement Facility

    en.wikipedia.org/wiki/Chemistry_and_Metallurgy...

    The two buildings will be linked by tunnels and will connect to LANL's existing 30-year-old plutonium facility PF-4. [1] The facility is controversial both because of spiraling costs and because critics argue it will allow for expanded production of plutonium 'pits' and therefore could be used to manufacture new nuclear weapons.