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Edwin Mattison McMillan (September 18, 1907 – September 7, 1991) was an American physicist credited with being the first to produce a transuranium element, neptunium. For this, he shared the 1951 Nobel Prize in Chemistry with Glenn Seaborg .
Philip Hauge Abelson (April 27, 1913 – August 1, 2004) was an American physicist, scientific editor and science writer. Trained as a nuclear physicist , he co-discovered the element neptunium , worked on isotope separation in the Manhattan Project , and wrote the first study of nuclear marine propulsion for submarines.
Although many false claims of its discovery were made over the years, the element was first synthesized by Edwin McMillan and Philip H. Abelson at the Berkeley Radiation Laboratory in 1940. [6] Since then, most neptunium has been and still is produced by neutron irradiation of uranium in nuclear reactors.
A letter by Edwin McMillan and Philip Abelson published in the Physical Review on 15 June 1940 stated that this decayed to an element with an atomic number of 93, and then to one with an atomic number of 94 and mass of 239, which, while still radioactive, was fairly long-lived. [60]
Philip L. Cantelon: 1984 academic, historian, co-founder and CEO of History Associates Incorporated [62] Thomas Lincoln Casey Jr. 1894 major with the Army Corps of Engineers and entomologist [1] [5] James McKeen Cattell: 1902 first professor of psychology in the U.S., editor of Science and Popular Science Monthly [1] Bruce Catton
Arthur Charles Wahl (September 8, 1917 – March 6, 2006) [2] was an American chemist who, as a doctoral student of Glenn T. Seaborg at the University of California, Berkeley, first isolated plutonium (94) in February 1941 [3] [4] shortly after the element neptunium (93) was discovered by McMillan and Abelson in 1940.
Prince Philip, husband of Queen Elizabeth and a leading figure in the British royal family for almost seven decades, has died aged 99, Buckingham Palace said on Friday. "Like the expert carriage ...
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 ...