SciDev.Net has produced a special Spotlight on "Nuclear Power After Fukushima" on 29 September 2011. SciDev.Net Spotlights are collections of feature, news and opinion...
Nuclear powerLast Updated on 2015-08-28 08:36:17Nuclear power is the generation of electricity from controlled reactions within the nucleii of atoms that release energy used to boil water, the steam from which drives a turbine to generate electricity . All commercial nuclear plants presently rely upon nuclear fission reactions.
As of 2010, approximately 14 percent of the world's electricity was derived from nuclear power, chiefly centered in the United States (with 31% of the world's total nuclear power capacity), France (16%), and Japan (10%).
The International Atomic Energy Agency (IAEA) reports that, as of November 21, 2012, there are 437 nuclear power reactors in operation in 30 countries, plus Taiwan. Another 64 reactors under construction in 14 countries which if operational today would increase the worldwide electrical generation capacity of nuclear power by 17%. One hundred and forty reactors have been permanently... More »
Trinity Site, New MexicoLast Updated on 2014-06-28 18:11:15
Trinity Site, Alamogordo Bombing Range, New Mexico ( 33°40'30.00"N, 106°28'30.00"W) was the site of the first atmospheric atomic bomb test which took place on July 16, 1945. The test was part of the federal government’s top-secret program, the Manhattan Project—the United States’ war-time effort to create the first atomic bomb—and was conducted and overseen by the Manhattan Engineer District (MED). The test took place less than three years after the first demonstration of a controlled fission chain reaction by Enrico Fermi at the University of Chicago, Illinois on December 2, 1942.
The Los Alamos Scientific Laboratory (LASL), under contract to the MED, was in charge of much of the planning and testing that led up to the test at the Trinity Site. The Scientific Director of the Manhattan Project, Julius Robert Oppenheimer, along with... More »
Los Alamos National LaboratoryLast Updated on 2014-06-18 18:15:17Los Alamos National Laboratory (LANL), located in Los Alamos, New Mexico, is one of several U.S. Department of Energy (DOE) national laboratories.
It is noteworthy as the site where the world's first nuclear weapon was developed under a heavy cloak of secrecy during World War II, and has been known variously as Site Y, Los Alamos Laboratory, and Los Alamos Scientific Laboratory. Today, it is recognized as one of the world's leading science and technology institutes.
Since June 2006, LANL has been managed and operated by Los Alamos National Security, LLC (LANS). LANL's self-stated mission is to ensure the safety, security, and reliability of the nation's nuclear deterrent. Its research work serves to advance bioscience, chemistry, computer science, Earth and environmental sciences, materials science, and physics disciplines.
The Manhattan Project was the... More »
UraniumLast Updated on 2013-12-15 23:42:25Uranium is a radioactive element that occurs naturally in low concentrations (a few parts per million) in soil, rock, and surface and groundwater. It is the heaviest naturally occurring element, with an atomic number of 92. Uranium in its pure form is a silver-colored heavy metal that is nearly twice as dense as lead and is pyrophoric when finely divided.
Uranium exhibits three crystallographic modifications as follows: alpha --(688°C)→ beta --(776°C)→ gamma. It is a little softer than steel, and is attacked by cold water in a finely divided state. It is malleable, ductile, and slightly paramagnetic. In air, the metal becomes coated with a layer of oxide. Acids dissolve the metal, but it is unaffected by alkalis.
Previous Element: Protactinium
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Public Health Statement for Ionizing RadiationLast Updated on 2013-09-28 16:17:13This article is a verbatim version of the original and is not available for edits or additions by EoE editors or authors. Companion articles on the same topic that are editable may exist within the EoE.
This Public Health Statement is the summary chapter from the Toxicological Profile for ionizing radiation. It is one in a series of Public Health Statements about hazardous substances and their health effects. A shorter version, the ToxFAQs™, is also available. This information is important because this substance may harm you. The effects of exposure to any hazardous substance depend on the dose, the duration, how you are exposed, personal traits and habits, and whether other chemicals are present. For more information, call the ATSDR Information Center at 1-888-422-8737.
This public health statement tells you about ionizing radiation and... More »
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