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oxalic acid

(Encyclopedia) oxalic acidoxalic acidŏksălˈĭk [key] or ethanedioic acidethanedioic acidĕthˌāndīōĭk [key], HO2CCO2H, a colorless, crystalline organic carboxylic acid that melts at 189℃ with…

DK History: Agricultural Revolution

WHY DID CHANGES TAKE PLACE IN FARMING? WHO WORKED ON THE LAND? BIOGRAPHY: THOMAS WILLIAM COKE 1752–1842 MECHANIZATIONFIND OUT MOREThe 18th and 19th centuries saw great changes across Europe and…

Geopolitical Issues a Big Concern in PyeongChang

Nuclear tensions intensify around the Olympics Source: AP Photo/Jae C. HongSouth Korean Protestor Tears Image of North Korean Flag Related Links North Korea The Korean War 2018 Winter Olympics…

Conway Cabal

(Encyclopedia) Conway Cabal, 1777, intrigue in the American Revolution to remove George Washington as commander in chief of the Continental Army. Washington had been defeated at Brandywine and…

Montferrat

(Encyclopedia) MontferratMontferratmŏntfərătˈ, –rätˈ [key], Ital. Monferrato, historic region of Piedmont, NW Italy, south of the Po River, now mostly in Alessandria prov. It is largely hilly, and…

Yung-lo

(Encyclopedia) Yung-loYung-loy&oomacr;ng-lô [key], 1359–1424, reign title of the 3d emperor (1403–24) of the Chinese Ming dynasty, whose personal name was Chu Ti. He rose to power in N China…

tartaric acid

(Encyclopedia) tartaric acid, HO2CCHOHCHOHCO2H, white crystalline dicarboxylic acid. It occurs as three distinct isomers, the dextro-, levo-, and meso- forms. The dextro- and levo- forms are…

Montserrat, mountain, Spain

(Encyclopedia) Montserrat or MonserratMonserratboth: mŏnˌsərătˈ, mŏntˌ–, Catalan mŏnsər-rätˈ, Span. mōnsārätˈ [key], mountain, 4,054 ft (1,236 m) high, NE Spain, rising abruptly from a plain in…

Needham, Joseph

(Encyclopedia) Needham, JosephNeedham, Josephnēdˈəm [key], 1900–1995, British biochemist, historian of science, and sinologist, b. London. He had a lifelong association with Cambridge, where he was…

Kingsley, Charles

(Encyclopedia) Kingsley, Charles, 1819–75, English author and clergyman. Ordained in 1842, he became vicar of Eversley in Hampshire in 1844. From 1848 to 1852 he published tracts advocating Christian…