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gallic acid

(Encyclopedia)gallic acid or 3,4,5-trihydroxybenzoic acid trīˌhīdrŏkˈsēbĕnzōˈĭk [key], C6H2(OH)3CO2H, colorless crystalline organic acid found in gallnuts, sumach, tea leaves, oak bark, and many other pla...

Hertzsprung, Ejnar

(Encyclopedia)Hertzsprung, Ejnar īˈnär hĕrtsˈspro͞ong [key], 1873–1967, Danish astronomer. Although trained as a chemical engineer, Hertzsprung made his career in astronomy, specializing in exacting photogr...

Huggins, Sir William

(Encyclopedia)Huggins, Sir William, 1824–1910, English astronomer. Using a spectroscope, he began to study the chemical constitution of stars from the observatory attached to his home in Tulse Hill, London. He pr...

Eastman, George

(Encyclopedia)Eastman, George, 1854–1932, American inventor, industrialist, and philanthropist, b. Waterville, N.Y. By mass production of his photographic inventions, Eastman enormously stimulated the development...

Angers

(Encyclopedia)Angers äNzhāˈ [key], city, capital of Maine-et-Loire dept., W France, in Anjou, on the Maine River. A business and trade center, it is known for its wine and the famous...

Cannon, Annie Jump

(Encyclopedia)Cannon, Annie Jump, 1863–1941, American astronomer, b. Dover, Del. In 1897 she became an assistant in the Harvard College Observatory, where (1911–38) she was astronomer and curator of astronomica...

Cleburne

(Encyclopedia)Cleburne, city (2020 pop. 31,352), seat of Johnson co., N Tex.; inc. 1907. It is a rail, processing, and medical center in a farming area. The city has ...

Jasper, city, United States

(Encyclopedia)Jasper, city (1990 pop. 13,553), seat of Walker co., NW central Ala.; inc. 1889. Jasper is a trade and processing center in a coal and timber area. There is agriculture and the manufacture of sporting...

Nanjing

(Encyclopedia)Nanjing nănˈkĭngˈ [key] [southern capital], city (1994 est. pop. 2,224,200), capital of Jiangsu prov., E central China, in a bend of the Chang (Yangtze) River. It has served at times in the past a...

Rochester, cities, United States

(Encyclopedia)Rochester rŏchˈĕstər, –ĭstər [key]. 1 City (1990 pop. 70,745), seat of Olmsted co., SE Minn.; inc. 1858. It is a farm trade center, and its industries include printing and publishing, food pro...