EMILIO SEGRE VISUAL ARCHIVES,AMERICAN INSTITUTE OF PHYSICS,COLOURED BY SCIENCE PHOTO LIBRARY EMILIO SEGRE VISUAL ARCHIVES,AMERICAN INSTITUTE OF PHYSICS,COLOURED BY SCIENCE PHOTO LIBRARY
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US physicists Clinton Davisson (1881-1958, left) and Lester Germer (1896-1971, right) with a vacuum tube used in their electron diffraction work. In 1927 Davisson and Germer bombarded a crystal of nickel (housed in the vacuum tube) with electrons and observed the distribution of the electrons that scattered from it. The pattern showed, for the first time, that particles had wave-like properties. Davisson shared the 1937 Nobel Prize in Physics for this discovery. Photographed in New York City, USA, on 14th December 1927.
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