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Hewitt, Abram Stevens
(Encyclopedia) Hewitt, Abram StevensHewitt, Abram Stevenshy&oomacr;ˈĭt [key], 1822–1903, American industrialist and political leader, b. Haverstraw, N.Y. He became a lawyer, and friendship with a…mica
(Encyclopedia) micamicamīˈkə [key], general term for a large group of minerals, hydrous silicates of aluminum and potassium, often containing magnesium, ferrous iron, ferric iron, sodium, and lithium…Michoacán
(Encyclopedia) MichoacánMichoacánmēchōäkänˈ [key], state (1990 pop. 3,548,199), 23,202 sq mi (60,093 sq km), S Mexico. Morelia is the capital. Dominated by the mountains of the Sierra Madre…cement
(Encyclopedia) cement, binding material used in construction and engineering, often called hydraulic cement, typically made by heating a mixture of limestone and clay until it almost fuses and then…plumbing
(Encyclopedia) plumbing, piping systems inside buildings for water supply and sewage. The Romans had a highly developed plumbing system; water was brought to Rome by aqueducts and distributed to…sword
(Encyclopedia) sword, weapon of offense and defense in personal combat, consisting of a blade with a sharp point and one or two cutting edges, set in a hilt with a handle protected by a metal case or…magnesium
(Encyclopedia) magnesiummagnesiummăgnēˈzēəm, –zhəm [key], metallic chemical element; symbol Mg; at. no. 12; at. wt. 24.3050; m.p. about 648.8℃; b.p. about 1,090℃; sp. gr. 1.738 at 20℃; valence +2. In…magnetism
(Encyclopedia) CE5 Lines of induction around a single bar magnet and between opposite poles of different magnets magnetism, force of attraction or repulsion between various substances, especially…Crystal Palace
(Encyclopedia) Crystal Palace, building designed by Sir Joseph Paxton and erected in Hyde Park, London, for the Great Exhibition in 1851. In 1854 it was removed to Sydenham, where, until its damage…Gyeonggi
(Encyclopedia) Gyeonggi or Kyonggi Gyeonggi gyŭngˈgēˈ [key], province, NW South Korea. Suwon is the capital. The…