- prismatic mirror
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призматическое зеркало
Англо-русский словарь технических терминов. 2005.
Англо-русский словарь технических терминов. 2005.
Compass — This article is about the direction finding instrument used in navigation. For other uses, see Compass (disambiguation). A simple dry magnetic pocket compass … Wikipedia
telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… … Universalium
Point group — The Bauhinia blakeana flower on the Hong Kong flag has C5 symmetry; the star on each petal has D5 symmetry. In geometry, a point group is a group of geometric symmetries (isometries) that keep at least one point fixed. Point groups can exist in a … Wikipedia
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Optical overheating protection — With all solar thermal collector systems there is a potential risk that the solar collector may reach an equilibrium or stagnation temperature higher than the maximum safe operating temperature. Various measures are taken for optical overheating… … Wikipedia
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List of character tables for chemically important 3D point groups — This lists the character tables for the more common molecular point groups used in the study of molecular symmetry. These tables are based on the group theoretical treatment of the symmetry operations present in common molecules, and are useful… … Wikipedia
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Malayaite — General Category Silicate mineral Chemical formula CaSnO[SiO4] Crystal symmetry Monoclinic prismatic (2/m) Unit cell a = 7.15 Å, b = 8.90 Å, c … Wikipedia