Energy & Green Tech
July 15, 2020 marks 75 years since the detonation of the first nuclear bomb. The Trinity Test, in New Mexico's Jornada del Muerto desert, proved that the design for the Nagasaki Bomb worked and started the nuclear era.
Jul 15, 2020
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Energy & Green Tech
Small amounts of plutonium (Pu) were released from the damaged Fukushima Daiichi Nuclear Power Plant (FDNPP) reactors into the environment during the site's 2011 nuclear disaster. However, the physical, chemical, and isotopic ...
Jul 14, 2020
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Energy & Green Tech
The U.N. nuclear agency said Friday that slightly elevated levels of radioactivity detected in northern Europe likely were related to a nuclear reactor that was either operating or undergoing maintenance, but it's still unclear ...
Jul 3, 2020
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Energy & Green Tech
France's oldest nuclear power plant will shut down on Tuesday after four decades in operation, to the delight of environmental activists who have long warned of contamination risks, but stoking worry for the local economy.
Jun 28, 2020
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Energy & Green Tech
Molten salt reactors could become a cornerstone of the future nuclear energy industry, allowing companies to generate carbon-free power in a safe and efficient way. But first, researchers have to better understand how salt ...
Jun 16, 2020
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Robotics
S tudies show that the coronavirus that causes COVID-19 is readily destroyed when exposed to ultraviolet light and heat while on surfaces, such as countertops, chairs, walls and floors. This vulnerability sparked an idea ...
Jun 8, 2020
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Energy & Green Tech
Researchers at the Department of Energy's Oak Ridge National Laboratory are refining their design of a 3-D-printed nuclear reactor core, scaling up the additive manufacturing process necessary to build it, and developing ...
May 11, 2020
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Energy & Green Tech
The U.S. renewable energy industry is reeling from the new coronavirus pandemic, which has delayed construction, put thousands of skilled laborers out of work and sowed doubts about solar and wind projects on the drawing ...
May 2, 2020
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Energy & Green Tech
Around the world, there are pools of water filled with nuclear waste waiting for their final resting place. This is waste that was created from decades of nuclear power generation, and the waste must be handled carefully.
Apr 29, 2020
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Engineering
Like doctors across the country, Benjamin Nicholson, M.D., knows the surge is coming.
Apr 15, 2020
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A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission or a combination of fission and fusion. Both reactions release vast quantities of energy from relatively small amounts of matter; a modern thermonuclear weapon weighing little more than a thousand kilograms can produce an explosion comparable to the detonation of more than a billion kilograms of conventional high explosive. Even small nuclear devices can devastate a city. Nuclear weapons are considered weapons of mass destruction, and their use and control has been a major aspect of international policy since their debut.
In the history of warfare, only two nuclear weapons have been detonated offensively, both near the end of World War II. The first was detonated on the morning of 6 August 1945, when the United States dropped a uranium gun-type device code-named "Little Boy" on the Japanese city of Hiroshima. The second was detonated three days later when the United States dropped a plutonium implosion-type device code-named "Fat Man" on the city of Nagasaki, Japan. These bombings resulted in the immediate deaths of around 120,000 people (mostly civilians) from injuries sustained from the explosion and acute radiation sickness, and even more deaths from long-term effects of ionizing radiation. The use of these weapons was and remains controversial. (See atomic bombings of Hiroshima and Nagasaki for a full discussion.)
Since the Hiroshima and Nagasaki bombings, nuclear weapons have been detonated on over two thousand occasions for testing purposes and demonstration purposes. The only countries known to have detonated nuclear weapons—and that acknowledge possessing such weapons—are (chronologically) the United States, the Soviet Union (succeeded as a nuclear power by Russia), the United Kingdom, France, the People's Republic of China, India, Pakistan, and North Korea. Israel is also widely believed to possess nuclear weapons, though it does not acknowledge having them. (For more information on these states' nuclear programs, as well as other states that formerly possessed nuclear weapons or are suspected of seeking nuclear weapons, see list of states with nuclear weapons.)
This text uses material from Wikipedia, licensed under CC BY-SA
