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A nuclear weapon[ a ] is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions (thermonuclear bomb), producing a nuclear explosion. Both bomb types release large quantities of energy from relatively small amounts of matter.
v. t. e. Nuclear warfare, also known as atomic warfare, is a military conflictor prepared political strategythat deploys nuclear weaponry. Nuclear weapons are weapons of mass destruction; in contrast to conventional warfare, nuclear warfare can produce destruction in a much shorter time and can have a long-lasting radiological result. A major ...
The National Nuclear Security Administration (NNSA) is a United States federal agency responsible for safeguarding national security through the military application of nuclear science. NNSA maintains and enhances the safety, security, and effectiveness of the U.S. nuclear weapons stockpile; works to reduce the global danger from weapons of ...
In the 1952 United States civil defense film, Duck and Cover, "Bert the Turtle" teaches schoolchildren how to protect themselves during a nuclear attack. " Duck and cover " is a method of personal protection against the effects of a nuclear explosion. Ducking and covering is useful in offering a degree of protection to personnel located outside ...
Nuclear program start date: 21 October 1939: First nuclear weapon test: 16 July 1945: First thermonuclear weapon test: 1 November 1952: Last nuclear test: 23 September 1992 [1] Largest yield test: 15 Mt (63 PJ) (1 March 1954) Total tests: 1,054 detonations: Peak stockpile: 31,255 warheads (1967) [2] Current stockpile: 3,708 (2024) [3] Maximum ...
According to an audit by the Brookings Institution, between 1940 and 1996, the US spent $11.3 trillion in present-day terms [6] on nuclear weapons programs. 57 percent of which was spent on building delivery mechanisms for nuclear weapons. 6.3 percent of the total, $709 billion in present-day terms, was spent on weapon nuclear waste management ...
The Office of the Assistant Secretary of Defense for Nuclear, Chemical, and Biological Defense Programs/Nuclear Matters (OASD (NCB/NM)) is the focal point of the Department of Defense for the U.S. nuclear deterrent. In this capacity, Nuclear Matters is the primary DoD point of contact for Congress, the interagency, and the public and for allies ...
History of nuclear weapons. Trinity- Gadget, an implosion-type plutonium device tested on July 16, 1945, by the United States was the first successful nuclear weapon ever created. It yielded approximately 25 kilotons of TNT. Building on major scientific breakthroughs made during the 1930s, the United Kingdom began the world's first nuclear ...