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phosphate

(Encyclopedia)phosphate, salt or ester of phosphoric acid, H3PO4. Because phosphoric acid is tribasic (having three replaceable hydrogen atoms), it forms monophosphate, diphosphate, and triphosphate salts in which ...

Min

(Encyclopedia)Min mĭn [key]. 1 Chief river of Fujian prov., SE China, c.350 mi (560 km) long, rising in Wuyi shan and flowing SE to the South China Sea near Fuzhou; it receives several tributaries near Nanping. Fu...

Shimonoseki, Treaty of

(Encyclopedia)Shimonoseki, Treaty of, Apr. 17, 1895, ending the First Sino-Japanese War. It was negotiated and signed by Ito Hirobumi for Japan and Li Hung-chang for China. Harsh terms were imposed on a badly defea...

Periodic Table of the Elements: Polonium

(Encyclopedia)Periodic Table of the Elements: Polonium ...

Eratosthenes

(Encyclopedia)Eratosthenes ĕrətŏsˈthənēz [key], c.275–c.195 b.c., Greek scholar, b. Cyrene. A pupil of Callimachus in Athens, he became (c.240 b.c.) head of the library at Alexandria. Known for his versatil...

Carew, Thomas

(Encyclopedia)Carew, Thomas, 1595?–1639?, English author, one of the Cavalier poets. Educated at Merton College, Oxford, he had a short diplomatic career on the Continent, then returned to England and became a fa...

floodplain

(Encyclopedia)floodplain, level land along the course of a river formed by the deposition of sediment during periodic floods. Floodplains contain such features as levees, backswamps, delta plains, and oxbow lakes. ...

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; ...

Lovelace, Richard

(Encyclopedia)Lovelace, Richard, 1618–1657?, one of the English Cavalier poets. He was the son of a Kentish knight and was educated at Oxford. In 1642 he was briefly imprisoned for having presented to Parliament ...

Poyang

(Encyclopedia)Poyang or P'o-yang both: pô-yäng [key], shallow lake, c.1,000 sq mi (2,590 sq km), N Jiangxi prov., SE China; one of China's largest lakes. It serves as a natural overflow reservoir for the Chang (Y...