Siegbahn, Karl Manne Georg, pronounced SEEG bahn, pronounced MAHN nuh YAY awr yuh (1886-1978), a Swedish physicist, received the 1924 Nobel Prize in physics for his work with X rays and a method of analysis called X-ray spectroscopy. He turned from an interest in electricity and magnetism to the study of X rays in 1914. He developed new types of X-ray spectrographs and improved X-ray tubes. With this more accurate equipment, he was able to make more precise measurements than had previously been possible. He also investigated the internal structure of atoms through the study of their X-ray spectra.
Siegbahn was born on Dec. 3, 1886, in Orebro, Sweden, and received his doctor's degree in 1911 from Lund University, in Sweden. In 1937, he became director of the Nobel Institute for Physics at the Stockholm Academy of Sciences. He died on Sept. 26, 1978. Siegbahn's son Kai won the 1981 Nobel Prize in physics for his contribution to the development of high-resolution electron spectroscopy.
Contributor: Gregory Benford, Ph.D., Professor of Physics, University of California, Irvine.
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