Antiproton discovery team. Group portrait of the team that discovered the antiproton in 1955. Seen here from left to right are; Emilio Segre, Clyde Wiegand, Edward Lofgren (leader of another team searching for antiprotons), Owen Chamberlain and Tom Ypsilantis. All were conducting research at the Lawrence Berkeley Laboratory in California, USA. Antiprotons, a type of antimatter, were made by firing protons at a copper target. A few antiprotons were found amongst the various particles created by nuclear collisions. Segre and Chamberlain won the 1959 Nobel prize for physics for the discovery. Photographed in October 1955.
Science Photo Library was founded in 1981 by Michael Marten, one of the authors of "Worlds Within Worlds", a book exploring different ways to observe the universe - from electron micrographs, to images of earthrise taken from the Apollo spacecraft. When Marten started receiving requests for the beautiful images in the book, he had an idea of setting up Science Photo Library.
Since then, Science Photo Library has continued to work alongside world acclaimed photographers and the leading science and medical experts to provide a central source of the best science and specialist imagery available. Although the collection started with scientific images, it has grown to encompass all aspects of science and their impact on everyday life.
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