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Encyclopedia > James Franck

James Franck (August 26, 1882 - May 21, 1964) was a German-born physicist and Nobel laureate. August 26 is the 238th day of the year in the Gregorian Calendar (239th in leap years). ... 1882 (MDCCCLXXXII) was a common year starting on Sunday (see link for calendar). ... May 21 is the 141st day of the year in the Gregorian calendar (142nd in leap years). ... For the Nintendo 64 emulator, see 1964 (Emulator). ... A physicist is a scientist trained in physics. ... Sir Edward Appletons medal Photographs of Nobel Prize Medals. ...

He was born in Hamburg, and did research in Germany and in the United States regarding quantum physics. In 1925, he received the Nobel Prize in Physics, mostly for his work in 1912-1914 which included the Franck-Hertz experiment, an important confirmation of the Bohr model of the atom. In 1933, after the Nazis came to power, he left his post in Germany and continued his research in the United States, first in Baltimore and then, after a year in Denmark, in Chicago. This is where he became involved in the Manhattan Project during World War II. He was the chairman of the Committee on Political and Social Problems regarding the atomic bomb; the committee consisted of himself and other scientists at the Manhattan Project's Metallurgical Laboratory at the University of Chicago, including Donald J. Hughes, J. J. Nickson, Eugene Rabinowitch, Glenn T. Seaborg, J. C. Stearns and Leo Szilard. The committee is most known for the compilation of the Franck Report, finished on June 11, 1945, which was a summary of the problems regarding the military application of the Atomic Bomb. Alster Lake at dusk Hamburg is the second largest city in Germany and with the Hamburg Harbour, its principal port. ... Fig. ... 1925 (MCMXXV) was a common year starting on Thursday (link will take you to calendar). ... Hannes Alfvén, 1970 winner for work on astrophysical plasmas List of Nobel Prize laureates in Physics from 1901 to the present day. ... In 1914, physicists James Franck and Gustav Ludwig Hertz sought to experimentally probe the energy levels of the atom. ... The Bohr model of the atom In atomic physics, the Bohr model depicts the atom as a small, positively charged nucleus surrounded by electrons in orbit - similar in structure to the solar system, but with electrostatic forces providing attraction, rather than gravity. ... Properties An atom (Greek άτομον from ά: non and τομον: divisible) is a submicroscopic structure found in all ordinary matter. ... 1933 (MCMXXXIII) was a common year starting on Sunday (link will take you to calendar). ... It has been suggested that this article or section be merged into Nazism. ... This article is about the city in the US state of Maryland. ... Chicago (officially named the City of Chicago) is the third largest city in the United States (after New York City and Los Angeles), with an official population of 2,896,016, as of the 2000 census. ... Control panels and operators for calutrons at the Y-12 Plant in Oak Ridge, Tennessee. ... World War II, also known as the Second World War, was a large scale military conflict that took place between 1939 and 1945. ... The Metallurgical Laboratory or Met Lab at the University of Chicago was part of the World War II–era Manhattan Project, created by the United States to develop an atomic bomb. ... The University of Chicago is a private university primarily located in the Hyde Park community of Chicago, Illinois, founded in 1890 and opened in 1892. ... James Joseph Nickson, MD (1915 - 1985). ... Eugene Rabinowitch (1901-1973) was a Russian-American biophysicist who is best known for his work in relation to nuclear weapons, especially as a co-author of the Franck Report and a co-founder in 1945 of the Bulletin of the Atomic Scientists, a global security and public policy magazine... Glenn T. Seaborg Glenn Theodore Seaborg (April 19, 1912 – February 25, 1999) was an American chemist, who was prominent in the discovery and isolation of many transuranic elements (including plutonium, during the Manhattan Project), for which he won the Nobel Prize in Chemistry in 1951. ... Leó Szilárd (right) working with Albert Einstein. ... The Franck Report of June 1945, named for James Franck, recommended that the US either a) keep its atomic discoveries secret for an indefinite time, or b) develop nucleonic armaments at such a pace that no other nation would think of attacking first from fear of overwhelming retaliation. ... June 11 is the 162nd day of the year in the Gregorian Calendar (163rd in leap years), with 203 days remaining. ... 1945 (MCMXLV) was a common year starting on Monday (link will take you to calendar). ...

When Germany invaded Denmark in World War II, the Hungarian chemist George de Hevesy dissolved the gold Nobel Prizes of Max von Laue and James Franck into aqua regia to prevent the Nazis from stealing them. He placed the resulting solution on a shelf in his laboratory at the Niels Bohr Institute. After the war, he returned to find the solution undisturbed and precipitated the gold out of the acid. The Nobel Society then recast the Nobel Prizes using the original gold. World War II, also known as the Second World War, was a large scale military conflict that took place between 1939 and 1945. ... George Charles de Hevesy (also known as Georg Karl von Hevesy) (August 1, 1885 in Budapest – July 5, 1966) was a Hungarian chemist who was important in the development of the tracer method where radioactive tracers are used to study chemical processes, e. ... Sir Edward Appletons medal Photographs of Nobel Prize Medals. ... Max von Laue (October 9, 1879 - April 24, 1960) was a German physicist, who studied under Max Planck. ... The Niels Bohr Institute is part of the Niels Bohr Institute for Astronomy, Physics and Geophysics of the University of Copenhagen. ...

Further information

  • http://nobelprize.org/physics/laureates/1925/franck-bio.html biography, on the Nobel website

  Results from FactBites:
James Franck (340 words)
Franck studied at the universities of Heidelberg and Berlin, received his doctorate from the latter in 1906, and served in the German army during World War I. He and Hertz performed their prizewinning work at the University of Berlin in 1912-14.
Franck was appointed professor of physics at the University of Gottingen in 1920.
Arriving in the United States in 1935, Franck was appointed professor at Johns Hopkins University, Baltimore, and in 1938 became professor of physical chemistry at the University of Chicago.
James Franck - Biography (937 words)
It was in Göttingen that Franck revealed himself as a highly gifted tutor, gathering around him and inspiring a circle of students and collaborators (among them: Blackett, Condon, Kopfermann, Kroebel, Maier-Leibnitz, Oppenheimer, and Rabinovich, to mention some of them), who in later years were to be renowned in their own fields.
Franck's other investigations, many of which were carried out with collaborators and students, were also dedicated to problems of atomic physics - those on the exchange of energy of excited atoms (impacts of the second type, photochemical researches), and optical problems connected with elementary processes during chemical reactions.
In 1964, Professor Franck was elected as a Foreign Member of the Royal Society, London, for his contribution to the understanding of exchanges of energy in electron collisions, to the interpretation of molecular spectra, and to problems of photosynthesis.
  More results at FactBites »



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