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furnace
(Encyclopedia)furnace, enclosed space for the burning of fuel. There are many kinds of furnaces, the type depending upon the fuel and the use to which the heat produced within it is put. Most familiar are the furna...Mitscherlich, Eilhard
(Encyclopedia)Mitscherlich, Eilhard īlˈhärt mĭchˈərlĭkh [key], 1794–1863, German chemist. He was professor at Berlin from 1822. Noted for his discovery of the principle of isomorphism, he did important wor...Marggraf, Andreas Sigismund
(Encyclopedia)Marggraf, Andreas Sigismund ändrāˈäs zēˈgĭsmo͝ont märkˈgräfˌ [key], 1709–82, German chemist, a pioneer in analytical chemistry. He proved that alumina, magnesia, and lime are distinct ea...P
(Encyclopedia)P, 16th letter of the alphabet, representing the voiceless bilabial stop. It corresponds to Greek pi, but in form it looks like Greek rho (see R). For the technical use of P in higher criticism, see O...oxide
(Encyclopedia)oxide, chemical compound containing oxygen and one other chemical element. Oxides are widely and abundantly distributed in nature. Water is the oxide of hydrogen. Silicon dioxide is the major componen...liming
(Encyclopedia)liming līmˈĭng [key], application to the soil of calcium in various forms, generally as ground limestone, but also as marl, chalk, shells, or hydrated lime. Lime benefits soil by neutralizing acidi...drainage, in agriculture
(Encyclopedia)drainage, in agriculture, the removal of excess water from the soil, either by a system of surface ditches, or by underground conduits if required by soil conditions and land contour. Diesel or centri...convulsion
(Encyclopedia)convulsion, sudden, violent, involuntary contraction of the muscles of the body, often accompanied by loss of consciousness. It is not known what causes the abnormal impulses from the brain that resul...casein
(Encyclopedia)casein kāˈsēn [key], well-defined group of proteins found in milk, constituting about 80% of the proteins in cow's milk, but only 40% in human milk. Casein is a remarkably efficient nutrient, suppl...Bessemer process
(Encyclopedia)CE5 Bessemer converter Bessemer process bĕsˈəmər [key] [for Sir Henry Bessemer], industrial process for the manufacture of steel from molten pig iron. The principle involved is that of oxidati...Browse by Subject
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