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The Chicago Police Department 's Homan Square facility is a former Sears, Roebuck and Company warehouse on the city's West Side. The facility houses the department's Evidence and Recovered Property Section. In 2015, the facility gained worldwide notoriety when the American journalist Spencer Ackerman wrote a series of articles in The Guardian ...
Joseph W. Kennedy. Joseph William Kennedy (May 30, 1916 – May 5, 1957) was an American chemist who co-discovered plutonium, along with Glenn T. Seaborg, Edwin McMillan, and Arthur Wahl. During World War II, he led the CM (Chemistry and Metallurgy) Division at the Manhattan Project 's Los Alamos Laboratory, where he oversaw research onto the ...
Manhattan District The Trinity test of the Manhattan Project on 16 July 1945 was the first detonation of a nuclear weapon. Active 1942–1946 Disbanded 15 August 1947 Country United States United Kingdom Canada Branch U.S. Army Corps of Engineers Garrison/HQ Oak Ridge, Tennessee, U.S. Anniversaries 13 August 1942 Engagements Allied invasion of Italy Allied invasion of France Allied invasion of ...
Apr. 14—It's been almost 80 years since the first atomic bomb was detonated, and scientists say there's still much to learn about how nuclear devices function as they reach the point of exploding.
t. e. Weapons-grade nuclear material is any fissionable nuclear material that is pure enough to make a nuclear weapon and has properties that make it particularly suitable for nuclear weapons use. Plutonium and uranium in grades normally used in nuclear weapons are the most common examples. (These nuclear materials have other categorizations ...
Iowa can enforce a book ban this school year following a Friday ruling by a federal appeals court. The U.S. Eighth Circuit Court of Appeals overturned a district judge's earlier decision that ...
Plutonium is a chemical element; it has symbol Pu and atomic number 94. It is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. The element normally exhibits six allotropes and four oxidation states.
Plutonium-238 (238 Pu or Pu-238) is a radioactive isotope of plutonium that has a half-life of 87.7 years. Plutonium-238 is a very powerful alpha emitter ; as alpha particles are easily blocked, this makes the plutonium-238 isotope suitable for usage in radioisotope thermoelectric generators (RTGs) and radioisotope heater units .