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Clyde William Tombaugh / ˈ t ɒ m b aʊ / (February 4, 1906 – January 17, 1997) was an American astronomer.He discovered the ninth planet Pluto in 1930, the first object to be discovered in what would later be identified as the Kuiper belt.
An identical design was used in "Fat Man", dropped on Nagasaki, Japan, on August 9, 1945, killing 35,000–40,000 people and destroying 68%–80% of war production at Nagasaki. [98] Only after the announcement of the first atomic bombs was the existence and name of plutonium made known to the public by the Manhattan Project's Smyth Report. [99]
The ions are "picked up" by the solar wind and carried in its flow past the dwarf planet to form an ion or plasma tail. The Solar Wind around Pluto (SWAP) instrument on the New Horizons spacecraft made the first measurements of this region of low-energy atmospheric ions shortly after its closest approach on 14 July 2015. Such measurements will ...
Plutonium is made from uranium-238. 239 Pu is normally created in nuclear reactors by transmutation of individual atoms of one of the isotopes of uranium present in the fuel rods. Occasionally, when an atom of 238 U is exposed to neutron radiation, its nucleus will capture a neutron, changing it to 239 U.
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 ...
These were the first results to probe the interactions that hold a nucleus together. Second, he showed that α-particles colliding with nitrogen nuclei would react rather than simply bounce off. One product of the reaction was the proton; the other product was shown by Patrick Blackett, Rutherford's colleague and former student to be oxygen:
Pluto: Urasawa x Tezuka (stylized in all caps) is a Japanese manga series written and illustrated by Naoki Urasawa. It was serialized in Shogakukan 's seinen manga magazine Big Comic Original from September 2003 to April 2009, with its chapters collected into eight tankōbon volumes.
J. Robert Oppenheimer (born Julius Robert Oppenheimer; / ˈ ɒ p ən h aɪ m ər / OP-ən-hy-mər; April 22, 1904 – February 18, 1967) was an American theoretical physicist who served as the director of the Manhattan Project's Los Alamos Laboratory during World War II.