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Algardi, Alessandro

(Encyclopedia)Algardi, Alessandro älās-sänˈdrō älgärˈdē [key], 1595–1654, Italian sculptor and designer, b. Bologna. He studied under Lodovico Carracci. In Rome his friend Domenichino obtained his first ...

alkali

(Encyclopedia)alkali ălˈkəlī [key] [Arab., al-gili=ashes of saltwort], hydroxide of an alkali metal. Alkalies are readily soluble in water and form strongly basic solutions with a characteristic acrid taste. Th...

Ctesiphon

(Encyclopedia)Ctesiphon tĕsˈĭfŏnˌ, tēˈsĭ– [key], ruined ancient city, 20 mi (32 km) SE of Baghdad, Iraq, on the left bank of the Tigris opposite Seleucia and at the mouth of the Diyala River. After 129 b....

Daddi, Bernardo

(Encyclopedia)Daddi, Bernardo bārnärˈdō dädˈdē [key], fl. 1312–48, Italian painter of the Florentine school. First influenced by his contemporary Giotto, he soon adopted the delicate line and lyrical expre...

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; ...

Trudeau, Edward Livingston

(Encyclopedia)Trudeau, Edward Livingston tro͞oˈdō [key], 1848–1915, American physician, b. New York City, M.D. Columbia, 1871. As a result of taking care of his brother, who had tuberculosis, he developed the ...

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)...

Austin, John Langshaw

(Encyclopedia)Austin, John Langshaw, 1911–60, British philosopher. A graduate of Oxford, he was a fellow of All Souls (1933–35) and Magdalen (1935–52) colleges before he became White's professor of moral phil...

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). ...

Casal, Julián del

(Encyclopedia)Casal, Julián del ho͞olyänˈ dĕl käsälˈ [key], 1863–93, Cuban poet, b. Havana. A friend of Rubén Darío, Casal became a leader in modernismo. He was greatly influenced by the French Parnassi...