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  2. Dayton Project - Wikipedia

    en.wikipedia.org/wiki/Dayton_Project

    The initiator used in the implosion design of the Fat Man bomb that was dropped on Nagasaki was code-named "urchin". In order to increase the efficiency of the explosion, the initiator had to emit a large number of neutrons in a few microseconds while the plutonium core was fully compressed. [ 44 ]

  3. History of nuclear weapons - Wikipedia

    en.wikipedia.org/wiki/History_of_nuclear_weapons

    It tested its first atomic bomb at Lop Nur on October 16, 1964 (Project 596); and tested a nuclear missile on October 25, 1966; and tested a thermonuclear (hydrogen) bomb on June 14, 1967. China ultimately conducted a total of 45 nuclear tests ; although the country has never become a signatory to the Limited Test Ban Treaty , it conducted its ...

  4. Stanisław Ulam - Wikipedia

    en.wikipedia.org/wiki/Stanisław_Ulam

    Stanisław Marcin Ulam (Polish: [sta'ɲiswaf 'mart͡ɕin 'ulam]; 13 April 1909 – 13 May 1984) was a Polish mathematician, nuclear physicist and computer scientist. He participated in the Manhattan Project, originated the Teller–Ulam design of thermonuclear weapons, discovered the concept of the cellular automaton, invented the Monte Carlo method of computation, and suggested nuclear pulse ...

  5. List of nuclear weapons - Wikipedia

    en.wikipedia.org/wiki/List_of_nuclear_weapons

    The components of a B83 nuclear bomb used by the United States. This is a list of nuclear weapons listed according to country of origin, and then by type within the states. . The United States, Russia, China and India are known to possess a nuclear triad, being capable to deliver nuclear weapons by land, sea and

  6. Timeline of nuclear weapons development - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_nuclear...

    1966 – The United States' nuclear stockpile peaks at 31,149 warheads. [54] 1966 - China begins moving its nuclear facilities into the interior during its Third Five-Year Plan. [27] 1966 - October 27 - China tests a nuclear-armed Dongfeng-2 missile, which launches from Shuangchengzi Space and Missile Center and strikes Lop Nur. It is the only ...

  7. Sundial (weapon) - Wikipedia

    en.wikipedia.org/wiki/Sundial_(weapon)

    At a meeting with the Atomic Energy Commission in 1954, following Operation Castle, Teller proposed the 10-gigaton Sundial device and the 1-gigaton Gnomon device. Others at the meeting were shocked by the proposal, and Isidor Isaac Rabi dismissed the idea as an "advertising stunt" rather than a serious proposal for a weapon. [4]

  8. J. Robert Oppenheimer - Wikipedia

    en.wikipedia.org/wiki/J._Robert_Oppenheimer

    The first atomic bomb test by the Soviet Union in August 1949 came earlier than Americans expected, and over the next several months, there was an intense debate within the U.S. government, military, and scientific communities over whether to proceed with the development of the far more powerful, nuclear fusion–based hydrogen bomb, then known ...

  9. William Higinbotham - Wikipedia

    en.wikipedia.org/wiki/William_Higinbotham

    William Alfred Higinbotham [1] [2] [3] (October 22, 1910 – November 10, 1994) was an American physicist.A member of the team that developed the first nuclear bomb, he later became a leader in the nonproliferation movement.

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