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Hollein, Hans

(Encyclopedia)Hollein, Hans, 1934–2014, Austrian architect and designer. He studied with Mies van der Rohe, Frank Lloyd Wright, and Richard Neutra. Opening his own practice in 1964, he established an internationa...

sodium carbonate

(Encyclopedia)sodium carbonate, chemical compound, Na2CO3, soluble in water and very slightly soluble in alcohol. Pure sodium carbonate is a white, odorless powder that absorbs moisture from the air, has an alkalin...

Volta

(Encyclopedia)Volta vólˈtə [key], river, c.290 mi (470 km) long, formed in central Ghana, W Africa, by the confluence of the Black Volta (or Mouhon, c.840 mi/1,350 km long) and the White Volta (or Nakambe, c.450...

water skiing

(Encyclopedia)water skiing, sport of riding on skis along the water's surface while being towed by a motorboat. It probably originated on the French Riviera in the early 1920s, and was known in the United States by...

welding

(Encyclopedia)welding, process for joining separate pieces of metal in a continuous metallic bond. Cold-pressure welding is accomplished by the application of high pressure at room temperature; forge welding (forgi...

manganese

(Encyclopedia)manganese măngˈgənēs, mănˈ– [key] [Lat.,=magnet], metallic chemical element; symbol Mn; at. no. 25; at. wt. 54.93805; m.p. about 1,244℃; b.p. about 1,962℃; sp. gr. 7.2 to 7.45, depending o...

metal

(Encyclopedia)metal, chemical element displaying certain properties by which it is normally distinguished from a nonmetal, notably its metallic luster, the capacity to lose electrons and form a positive ion, and th...

Maputo

(Encyclopedia)Maputo məpo͞oˈtō [key], city (1997 pop. 966,837), capital of Mozambique, a port on the Indian Ocean. It is Mozambique's largest city and its administrative, communications, and commercial center. ...

Saumur

(Encyclopedia)Saumur sōmürˈ [key], town (1990 pop. 30,150), Maine-et-Loire dept., W France, on the Loire River. Saumur is noted for its religious-medal industry (dating from the 17th cent.) and for its sparkling...

tellurium

(Encyclopedia)tellurium tĕlo͝orˈēəm [key] [Lat.,=earth], semimetallic chemical element; symbol Te; at. no. 52; at. wt. 127.60; m.p. 450℃; b.p. 990℃; sp. gr. 6.24 at 20℃; valence −2, +4, or +6. Telluriu...