Portal:Nuclear technology
The Nuclear Technology Portal
Introduction
- Nuclear technology is technology that involves the nuclear reactions of atomic nuclei. Among the notable nuclear technologies are nuclear reactors, nuclear medicine and nuclear weapons. It is also used, among other things, in smoke detectors and gun sights. (Full article...)
- Nuclear power is the use of nuclear reactions to produce electricity. Nuclear power can be obtained from nuclear fission, nuclear decay and nuclear fusion reactions. Presently, the vast majority of electricity from nuclear power is produced by nuclear fission of uranium and plutonium in nuclear power plants. Nuclear decay processes are used in niche applications such as radioisotope thermoelectric generators in some space probes such as Voyager 2. Generating electricity from fusion power remains the focus of international research. (Full article...)
- A nuclear weapon 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. (Full article...)
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Selected article -
The United States and Denmark launched an intensive clean-up and recovery operation, but the secondary stage of one of the nuclear weapons could not be accounted for after the operation was completed. USAF Strategic Air Command "Chrome Dome" operations were discontinued immediately after the accident, which highlighted the safety and political risks of the missions. Safety procedures were reviewed, and more stable explosives were developed for use in nuclear weapons.
In 1995, a political scandal arose in Denmark after a report revealed the government had given tacit permission for nuclear weapons to be located in Greenland, in contravention of Denmark's 1957 nuclear-free zone policy. Workers involved in the clean-up program campaigned for compensation for radiation-related illnesses they experienced in the years after the accident. (Full article...)Selected picture -
Did you know?
- ... that according to witnesses, the plutonium charge in the bomb used in the nuclear weapons test Gerboise Verte was transported in an economy car?
- ... that during World War II, pilot G. E. Clements was removed from training for secret missions associated with the Manhattan Project when senior officers realized she was a woman?
- ... that T. K. Jones thought that a nuclear war was survivable if "there are enough shovels to go around"?
- ... that the British Tychon missile was developed from a Barnes Wallis concept to keep strike aircraft safe while dropping nuclear bombs?
- ... that campaigning by climate activist Kimiko Hirata halted plans to build 17 new coal-fired power plants following the Fukushima nuclear disaster in Japan?
- ... that the sodium fast reactor Fermi 1 suffered a nuclear meltdown that led one operator to suggest "we almost lost Detroit"?
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Selected biography -
At 21, Wheeler earned his doctorate at Johns Hopkins University under the supervision of Karl Herzfeld. He studied under Breit and Bohr on a National Research Council fellowship. In 1939 he collaborated with Bohr on a series of papers using the liquid drop model to explain the mechanism of fission. During World War II, he worked with the Manhattan Project's Metallurgical Laboratory in Chicago, where he helped design nuclear reactors, and then at the Hanford Site in Richland, Washington, where he helped DuPont build them. He returned to Princeton after the war but returned to government service to help design and build the hydrogen bomb in the early 1950s. He and Edward Teller were the main civilian proponents of thermonuclear weapons.
For most of his career, Wheeler was a professor of physics at Princeton University, which he joined in 1938, remaining until 1976. At Princeton he supervised 46 PhD students, more than any other physics professor.
Wheeler left Princeton at the age of 65. He was appointed director of the Center for Theoretical Physics at the University of Texas at Austin in 1976 and remained in the position until 1986, when he retired and became a professor emeritus. (Full article...)
Nuclear technology news
- 14 May 2024 –
- Russia places its nuclear capable submarine-launched Bulava intercontinental ballistic missile into service. (Reuters)
- 9 May 2024 – Joint Comprehensive Plan of Action, Iran–Israel relations
- Iran warns that it will build a nuclear weapon if Israel continues to target its nuclear facilities. (Al Jazeera)
- 25 April 2024 – Russia–NATO relations
- Russian Deputy Foreign Minister Sergei Ryabkov warns that Russia will make NATO nuclear weapons in Poland one of its primary targets if they are deployed there. (The Jerusalem Post)
- 23 April 2024 – North Korea and weapons of mass destruction
- North Korea claims that it tested a new command-and-control system in a simulated nuclear counterstrike. (CNN)
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