fixed impurities
Смотреть что такое "fixed impurities" в других словарях:
crystal — crystallike, adj. /kris tl/, n., adj., v., crystaled, crystaling or (esp. Brit.) crystalled, crystalling. n. 1. a clear, transparent mineral or glass resembling ice. 2. the transparent form of crystallized quartz. 3. Chem., Mineral. a solid body… … Universalium
Crystal — /kris tl/, n. 1. a city in SE Minnesota, near Minneapolis. 25,543. 2. a female given name. * * * I Any solid material whose atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Each of a crystal s… … Universalium
coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… … Universalium
PRIESTS AND PRIESTHOOD — Definition of Priesthood The priests are the principal functionaries in divine services, their special task being to engage in cultic ceremonies which they conducted mainly in the Temple. In general the priests post is authorized by hereditary… … Encyclopedia of Judaism
rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 … Universalium
environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations … Universalium
coal utilization — Introduction combustion of coal or its conversion into useful solid, gaseous, and liquid products. By far the most important use of coal is in combustion, mainly to provide heat to the boilers of electric power plants. Metallurgical coke… … Universalium
chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… … Universalium
Hinduism — /hin dooh iz euhm/, n. the common religion of India, based upon the religion of the original Aryan settlers as expounded and evolved in the Vedas, the Upanishads, the Bhagavad Gita, etc., having an extremely diversified character with many… … Universalium
separation and purification — ▪ chemistry Introduction in chemistry, separation of a substance into its components and the removal of impurities. There are a large number of important applications in fields such as medicine and manufacturing. General principles… … Universalium
LEVITICUS, BOOK OF — (Heb. וַיִּקְרָא; LXX Λευιτικόν leuitikon), more aptly described by its tannaitic name, Torat Kohanim, the Priests Manual, the third book of the Pentateuch. Leviticus is thematically an independent entity. exodus contains the story of the… … Encyclopedia of Judaism
