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The Bilbao Crystallographic Server came to life in 1997 as a scientific project by the Departments of Condensed Matter Physics and Applied Physics II of the University of the Basque Country (EHU) under the supervision of J. Manuel Perez-Mato (EHU) and Mois I. Aroyo (EHU), in coordination with Gotzon Madariaga (EHU) and Hans Wondratschek ...
Bilbao Crystallographic Server, under "Subperiodic Groups: Layer, Rod and Frieze Groups" Nomenclature, Symbols and Classification of the Subperiodic Groups, V. Kopsky and D. B. Litvin; CVM 1.1: Vibrating Wallpaper by Frank Farris. He constructs layer groups from wallpaper groups using negating isometries.
The Wyckoff positions are named after Ralph Wyckoff, an American X-ray crystallographer who authored several books in the field.His 1922 book, The Analytical Expression of the Results of the Theory of Space Groups, [3] contained tables with the positional coordinates, both general and special, permitted by the symmetry elements.
The modern definition of the law of symmetry is based on symmetry elements, and is more in the German dynamistic [1] crystallographic tradition of Christian Samuel Weiss, Moritz Ludwig Frankenheim and Johann F. C. Hessel. Weiss and his followers studied the external symmetry of crystals rather than their internal structure.
A crystallographic database is a database specifically designed to store information about the structure of molecules and crystals. Crystals are solids having, in all three dimensions of space, a regularly repeating arrangement of atoms , ions , or molecules .
During a conversation with Martha Stewart, Pamela Anderson revealed how she felt about not receiving any Oscars nominations for "The Last Showgirl."
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The Crystallography Open Database (COD) is a database of crystal structures. [1] Unlike similar crystallographic databases, the database is entirely open-access, with registered users able to contribute published and unpublished structures of small molecules and small to medium-sized unit cell crystals to the database.