搜尋結果
Testing and deployment Nuclear weapons have only twice been used in warfare, both times by the United States against Japan at the end of World War II.On August 6, 1945, the United States Army Air Forces (USAAF) detonated a uranium gun-type fission bomb nicknamed "Little Boy" over the Japanese city of Hiroshima; three days later, on August 9, the USAAF detonated a plutonium implosion-type ...
The Russian Federation is known to possess or have possessed three types of weapons of mass destruction: nuclear weapons, biological weapons, and chemical weapons. It is one of the five nuclear-weapon states recognized under the Treaty on the Non-Proliferation of Nuclear Weapons. Russia possesses a total of 5,580 nuclear warheads as of 2024, [5 ...
On 6 and 9 August 1945, the United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki. The bombings killed between 129,000 and 226,000 people, most of whom were civilians, and remain the only use of nuclear weapons in an armed conflict. Japan surrendered to the Allies on 15 August, six days after the bombing of ...
Five are considered to be nuclear-weapon states ( NWS) under the terms of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT). In order of acquisition of nuclear weapons, these are the United States, Russia (the successor of the former Soviet Union ), the United Kingdom, France, and China. Of these, the three NATO members, the United ...
Early weapons models, such as the "Fat Man" bomb, were extremely large and difficult to use.From left are the Peacekeeper, the Minuteman III and the Minuteman I The original Little Boy and Fat Man weapons, developed by the United States during the Manhattan Project, were relatively large (Fat Man had a diameter of 5 feet (1.5 m)) and heavy (around 5 tons each) and required specially modified ...
The Manhattan Project was a research and development program undertaken during World War II to produce the first nuclear weapons. It was led by the United States in collaboration with the United Kingdom and Canada. From 1942 to 1946, the project was directed by Major General Leslie Groves of the U.S. Army Corps of Engineers.
The Tsar Bomba (Russian: Царь-бомба, romanized: Tsar'-bomba, IPA: [t͡sarʲ ˈbombə], lit. ' Tsar bomb'; code name: Ivan [5] or Vanya ), also known by the alphanumerical designation " AN602 ", was a thermonuclear aerial bomb, and the most powerful nuclear weapon ever created and tested. [6] [7] The Soviet physicist Andrei Sakharov ...
