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Chang Tso-lin

(Encyclopedia)Chang Tso-lin jäng tsōˈ-lĭnˈ [key], 1873–1928, Chinese general. Chang was of humble birth. As the leader of a unit of Manchurian militia he assisted (1904–5) the Japanese in the Russo-Japanes...

Sequoia National Park

(Encyclopedia)Sequoia National Park, 402,510 acres (162,960 hectares), E central Calif.; est. 1890. In the park are 35 groves of giant sequoias, spectacular granite mountains, and deep canyons. The General Sherman ...

Philipse Manor

(Encyclopedia)Philipse Manor, colonial estate of Frederick Philipse, confirmed by a royal charter (1693), extending from the present North Tarrytown, N.Y., to the present Bronx, with the Hudson River on the west an...

Paris, University of

(Encyclopedia)Paris, University of, at Paris, France; founded 12th cent., confirmed 1215 by papal bull. The most famous of its colleges was the Sorbonne, which opened in 1253 and gained academic and theological dis...

quaternion

(Encyclopedia)quaternion kwətûrˈnēən [key], in mathematics, a type of higher complex number first suggested by Sir William R. Hamilton in 1843. A complex number is a number of the form a+bi when a and b are re...

packaging

(Encyclopedia)packaging, containment and packing prior to sale with the primary purpose of facilitating the purchase and use of a product. Before 1800 packaging was restricted almost entirely to containment for shi...

Soleimani, Qasem

(Encyclopedia)Soleimani, Qasem, or Qassem Suleimani käˈsəm Sōləmänˈē [key], 1957–2020, Iranian general. He joined the Revolutionary Guards following the 1979 revolution and was considered a hero of the Ir...

Yellowstone

(Encyclopedia)Yellowstone, river, 671 mi (1,080 km) long, rising in NW Wyo., and flowing NE through Mont. to enter the Missouri River near the N.Dak. line; it drains c.70,400 sq mi (182,340 sq km). The Yellowstone ...

Mount Wilson Observatory

(Encyclopedia)Mount Wilson Observatory, astronomical observatory located in California on Mt. Wilson, near Pasadena. Mt. Wilson Observatory was founded in 1904 by George E. Hale. Its equipment includes 100-in. (2.5...

Draper, John William

(Encyclopedia)Draper, John William, 1811–82, American scientist, philosopher, and historian, b. near Liverpool, England, M.D. Univ. of Pennsylvania, 1836. In 1839 he became professor of chemistry at the Univ. of ...