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Archimedes

(Encyclopedia) ArchimedesArchimedesärkĭmēˈdēz [key], 287–212 b.c., Greek mathematician, physicist, and inventor. He is famous for his work in geometry (on the circle, sphere, cylinder, and parabola…

Mansa Musa

(Encyclopedia) Mansa Musa (Musa I)Mansa Musamänˈsä m&oomacr;ˈsä [key], c.1280–1337, ruler of the Mali empire (1312–37). A devout Muslim, he brought the Mali empire to its greatest height,…

Telluride

(Encyclopedia) TellurideTelluridetĕlˈyərīd [key], town (1990 pop. 1,309), seat of San Miguel co., SW Colo., on the San Miguel River in the San Juan Mts., inc. 1887. A trade center in a sheep,…

Boa Vista

(Encyclopedia) Boa Vista Boa Vista bōˈə vēshˈtə [key], city, capital of Roraima state, NW Brazil, on the Rio Branco.…

Zeya

(Encyclopedia) ZeyaZeyazāˈä, Rus. zyāˈə [key], river, c.800 mi (1,290 km) long, rising in the Stanovoy Range, Russian Far East, and flowing south to join the Amur River at Blagoveshchensk. It carries…

amalgamation process

(Encyclopedia) amalgamation processamalgamation processəmălˌgəmāˈshən [key], in particular, a method to extract gold and silver from ores. The ore is crushed and treated with mercury, in which the…

Cariboo Mountains

(Encyclopedia) Cariboo MountainsCariboo Mountainskărˈĭb&oomacr; [key], range, c.200 mi (320 km) long, E British Columbia, Canada, rising to 11,750 ft (3,582 m) at Mt. Sir Wilfrid Laurier. It runs…