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Vor 3 Tagen · X-ray crystallography is the experimental science of determining the atomic and molecular structure of a crystal, in which the crystalline structure causes a beam of incident X-rays to diffract in specific directions.
Vor 2 Tagen · In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form. [1] [2] The geological definition of mineral normally excludes compounds that occur only in living organisms.
Vor 2 Tagen · Timeline of crystallography - Wikipedia. Contents. hide. (Top) 17th Century. 18th Century. 19th Century. 20th Century. 21st Century. References. Further reading. Crystallography before 20th century. Crystallography in the 20th century. History of X-ray crystallography. History of electron crystallography. History of neutron crystallography.
2. Mai 2024 · Ein Kristall ist ein Festkörper, dessen Bausteine – z. B. Atome, Ionen oder Moleküle – regelmäßig in einer Kristallstruktur angeordnet sind. Bekannte kristalline Materialien sind Kochsalz, Zucker, Minerale und Schnee – aber auch die Metalle.
10. Mai 2024 · rock crystal, transparent variety of the silica mineral quartz that is valued for its clarity and total lack of colour or flaws. Vessels and spheres have been carved from large crystals since ancient times, and the application of the word crystal to fine glassware derives from this practice.
- The Editors of Encyclopaedia Britannica
Vor 3 Tagen · Crystals are solid materials whose atoms are arranged in a highly ordered, repeating pattern. These natural formations are not only visually stunning but also possess fascinating properties that have captivated human interest for centuries.
23. Apr. 2024 · zeolite, any member of a family of hydrated aluminosilicate minerals that contain alkali and alkaline-earth metals. The zeolites are noted for their lability toward ion-exchange and reversible dehydration.
