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turquoise

(Encyclopedia)turquoise, hydrous phosphate of aluminum and copper, Al2(OH)3PO4·H2O+Cu, used as a gem. It occurs rarely in crystal form, but is usually cryptocrystalline. Turquoise is opaque and has a waxy luster; ...

Union League Clubs

(Encyclopedia)Union League Clubs, in U.S. history, organizations formed throughout the North in the Civil War after the military defeats and Republican election losses of 1862. A convention at Cleveland (May, 1863)...

Fornés, María Irene

(Encyclopedia)Fornés, María Irene, 1930–2018, Cuban-American playwright and director; she emigrated from Cuba with her family after her father's death in 1945. An early experimental work, Promenade (1965), a mu...

Karun

(Encyclopedia)Karun käro͞onˈ [key], river, c.450 mi (720 km) long, rising in the Zagros Mts., W Iran, and flowing S to the Shatt al Arab on the Iraqi border. The Karun is navigable to Ahvaz for shallow draft ves...

Khorramshahr

(Encyclopedia)Khorramshahr khōrämˌshäˈhər [key], city (1991 pop. 34,750), Khuzestan prov., SW Iran, at the confluence of the Karun River and the Shatt al Arab, near the Persian Gulf. It is a busy port. Its de...

Suttner, Bertha (Gräfin Kinsky), Freifrau von

(Encyclopedia)Suttner, Bertha (Gräfin Kinsky), Freifrau von bĕrˈtä, grāfˈĭn kĭnsˈkē, frīˈfrou fən zo͝otˈnər [key], 1843–1914, Austrian novelist, known chiefly as an ardent pacifist. Her pacifist n...

Wright, Jim

(Encyclopedia)Wright, Jim (James Claud Wright, Jr.), 1922–2015, U.S. congressman, speaker of the U.S. House of Representatives (1987–89), b. Fort Worth, Tex. Following service in the U.S. army during World War ...

Yakub I

(Encyclopedia)Yakub I yäko͝obˈ [key], 1160?–1199, ruler of Morocco (1184–99) and Moorish Spain. He was known as Yakub al-Mansur [the victorious] after his victory over Alfonso VIII of Castile at Alarcos (119...

Zimbalist, Efrem

(Encyclopedia)Zimbalist, Efrem ĕˈfrəm zĭmˈbəlĭst [key], 1889–1985, Russian-American violinist. Zimbalist was a pupil of Leopold Auer at the St. Petersburg Conservatory. He made his debut in Berlin in 1907,...

voltaic cell

(Encyclopedia)voltaic cell, a simple device with which chemical energy is converted into electrical energy. Two dissimilar metals (e.g., copper and zinc) are immersed in an electrolyte (e.g., a dissolved sulfate). ...