nuclear fission

Jordan Carson Mark and the Development of Thermonuclear Weapons

Jordan Carson Mark and the Development of Thermonuclear Weapons

On July 6, 1913, Canadian mathematician Jordan Carson Mark was born. Mark is best known for his work on developing nuclear weapons for the United States at the Los Alamos National Laboratory. He oversaw the development of new weapons, including the hydrogen bomb in the 1950s. On the hydrogen bomb project he was able to bring together experts like Edward Teller, Stanislaw Ulam and Marshall Holloway despite their personal differences. Jordan Carson…
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Alfred Nier – a Pioneer in Mass Spectroscopy

Alfred Nier – a Pioneer in Mass Spectroscopy

On May 28, 1911, American physicist Alfred Otto Carl Nier was born. Nier pioneered the development of mass spectrometry. He was the first to use mass spectrometry to isolate uranium-235 which was used to demonstrate that 235U could undergo fission and developed the sector mass spectrometer configuration now known as Nier-Johnson geometry. “…You try to untangle all of these processes to get at the primordial ratio of the heliums in the cosmic…
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Edward Condon – Pioneer in Quantum Mechanics – SciHi Blog

Edward Condon – Pioneer in Quantum Mechanics – SciHi Blog

On March 2, 1902, American nuclear physicist Edward Uhler Condon was born. Condon was a pioneer in quantum mechanics and a participant in the development of radar and nuclear weapons during World War II as part of the Manhattan Project. The Franck–Condon principle and the Slater–Condon rules are co-named after him. “I have lost a good deal of sleep trying to figure out how you could have talked this way about a…
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Otto Frisch and the Nuclear Fission

Otto Frisch and the Nuclear Fission

On October 1, 1904, Austrian-British physicist Otto Robert Frisch was born. With his aunt Lise Meitner, Frisch described the division of neutron-bombarded uranium into lighter elements. With his collaborator Rudolf Peierls he designed the first theoretical mechanism for the detonation of an atomic bomb in 1940. Otto Frisch was the son of the painter Justinian Frisch and the concert pianist Auguste Meitner Frisch. Even though Otto was talented in the arts, he…
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