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Henry Gwyn Jeffreys Moseley

Henry Gwyn Jeffreys MoseleyBorn: 23-Nov-1887
Birthplace: Weymouth, Dorset, England
Died: 10-Aug-1915
Location of death: Gallipoli, Turkey
Cause of death: War

Gender: Male
Race or Ethnicity: White
Occupation: Physicist

Nationality: England
Executive summary: Confirmed importance of atomic number

In 1913 he discovered Moseley's Law, which correlated wavelength and atomic number, thus demonstrating the importance of atomic number over atomic weight, as was the common belief. He predicted the existence of elements Technetium and Promethium by noticing their gaps in the periodic table. After professorship at the University of Manchester (working with Ernest Rutherford), Moseley joined the Royal Engineers at the beginning of World War I, and was killed in action at the Battle of Suvla Bay, Gallipoli. Wrote Isaac Asimov, "In view of what he might have accomplished... his death might well have been the most costly single death of the war to mankind generally."

    University: Trinity College, Oxford University (1906-)
    Professor: University of Manchester (until WWI)

    Matteucci Medal 1919

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