Leonhard Weber (crystallographer)

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Leonhard Weber (born January 23, 1883 in Wohlen ; † June 20, 1968 in Solothurn ) was a Swiss crystallographer , mineralogist and university professor .

Weber received his doctorate in 1917 at the University of Freiburg (Switzerland) (Friborg) with his thesis on the prism method for determining the refractive indices of optically biaxial crystals without the ability to absorb or rotate . He was professor of mineralogy at the University of Zurich and from 1925 to 1955 at the University of Friborg.

In 1929 he derived the 80 two-sided surface ornaments found by Carl Hermann , based on the work of Paul Niggli (1919). At about the same time they were also derived from Heinrich Heesch , who was in Zurich at the time. In 1925 he gave a new presentation of the derivation of the 230 room groups .

literature

  • Eidgenössische Technische Hochschule (Ed.): Eidgenössische Technische Hochschule, 1855-1955: École Polytechnique Fédérale. Book publisher of the Neue Zürcher Zeitung, Zurich, 1955, p. 253.
  • Johann Jakob Burckhardt : Symmetry of the Crystals. Birkhäuser, Basel 1988, p. 148f (with photo)

Individual evidence

  1. ↑ Directory of dissertations in geosciences at the University of Friborg, pdf ( Memento from August 28, 2009 in the Internet Archive )
  2. ^ Hermann: On the systematic structure theory III , Journal for Crystallography, Volume 69, 1929, pp. 250-270
  3. ^ Weber: The symmetry of homogeneous plane point systems , Zeitschrift für Kristallographie, Volume 70, 1929, pp. 309–327
  4. ↑ Heesch: On the structure theory of the planar symmetry groups , Zeitschrift für Kristallographie, Volume 71, 1929, pp. 95-102
  5. ↑ Weber: The importance of crystal polyhedra in the teaching of regular point systems , Swiss Mineralogical and Petrographic Communications, V, 1925, pp. 1-66
personal data
SURNAME Weber, Leonhard
BRIEF DESCRIPTION Swiss crystallographer and mineralogist
DATE OF BIRTH January 23, 1883
PLACE OF BIRTH Well
DATE OF DEATH June 20, 1968
Place of death Solothurn