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( R e d i r e c t e d f r o m C h a r l e s M a u g u i n )
Charles-Victor Mauguin (French: [ʃaʁl.vik.tɔʁ mo.gɛ̃] ; 19 September 1878 – 25 April 1958), more often Charles Mauguin , was a French mineralogist and crystallographer. He and Carl Hermann invented an international standard notation for crystallographic groups called Hermann–Mauguin notation (also sometimes called international notation).[2] [3]
Education and career [ edit ]
Mauguin originally intended to become a school teacher and enrolled at École normale supérieure de Saint-Cloud in 1902. Later he moved to École Normale Supérieure, Paris , where he obtained his Doctor of Science in 1910 in the field of organic chemistry . During his chemistry studies, he also attended lectures on mathematics offered at Sorbonne University , including those by Émile Picard , Henri Poincaré , Paul Painlevé , and Édouard Goursat . Before World War I , Mauguin was briefly a faculty member at University of Bordeaux in 1912 and at University of Nancy from 1913 to 1919.[1] He moved back to University of Paris in 1919 and worked under Frédéric Wallerant as an associate professor of mineralogy. He took over the position in 1933 and became a professor of mineralogy at University of Paris and worked until 1948, when Mauguin retired.[4] [5]
Mauguin was the first to notice that when he sandwiched the semi-solid liquid crystals between two aligned polarizers , he could twist them in relation to each other, but the light continued to be transmitted. This phenomenon is called Mauguin regime (waveguide regime) in twisted nematic effect
[6] [7]
.
References [ edit ]
^ Mauguin, Ch. (1931-08-01). "Sur le symbolisme des groupes de repetition on de symetrie des assemblages cristallins" . Zeitschrift für Kristallographie - Crystalline Materials . 76 (1–6): 542–558. doi :10.1524/zkri.1931.76.1.542 . ISSN 2196-7105 .
^ Wyart, J. (1958-08-10). "Charles Mauguin, 1878-1958" . Acta Crystallographica . 11 (8 ): 513–514. Bibcode :1958AcCry..11..513W . doi :10.1107/S0365110X58001444 .
^ Charle, Christophe; Telkes, Eva (1989). "79. Mauguin (Charles)" . Publications de l'Institut national de recherche pédagogique . 25 (1 ): 194–196.
^ Mauguin, C.: Sur les cristaux liquides de Lehmann. Bull. Soc. Fr. Miner. 34, 71–117 (1911)
^ Blinov L.M. Structure and Properties of Liquid Crystals (Springer, 2011), pp. 439. ISBN 978-90-481-8828-4 Chapter 11.
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