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Stahl, Georg Ernst

(Encyclopedia)Stahl, Georg Ernst gāˈôrkh ĕrnst shtäl [key], 1660–1734, German physician and chemist. He taught (1694–1716) at the Univ. of Halle, then went to Berlin as court physician. He is known for his...

Streptomyces

(Encyclopedia)Streptomyces strĕpˌtəmīˈsēz [key], bacterial genus of the order Actinomycetales, members of which resemble fungi in their branching filamentous structure. Various species produce such antibiotic...

value-added tax

(Encyclopedia)value-added tax (VAT), levy imposed on business at all levels of the manufacture and production of a good or service and based on the increase in price, or value, provided by each level. Because the c...

Barry, Sir Charles

(Encyclopedia)Barry, Sir Charles, 1795–1860, English architect. A leader in the revival of the Renaissance style of architecture in England (also called Anglo-Italian), he designed the Travellers Club and the Ref...

Sarpsborg

(Encyclopedia)Sarpsborg särpsˈbôr [key], city (1995 pop. 46,474), Ostfold co., SE Norway, a port on the Glåma River near its mouth in the Oslofjord. Manufactures include forest products, chemicals, textiles, an...

chlorophyll

(Encyclopedia)CE5 chlorophyll klôrˈəfĭlˌ [key], green pigment that gives most plants their color and enables them to carry on the process of photosynthesis. Chemically, chlorophyll has several similar forms...

Braque, Georges

(Encyclopedia)Braque, Georges zhôrzh bräk [key], 1882–1963, French painter. He joined the artists involved in developing fauvism in 1905, and at l'Estaque c.1909 he was profoundly influenced by Cézanne. He met...

Eiffel Tower

(Encyclopedia)Eiffel Tower, structure designed by A. G. Eiffel and erected in the Champ-de-Mars for the Paris exposition of 1889. The tower is 984 ft (300 m) high and consists of an iron framework supported on four...

cytology

(Encyclopedia)cytology sītŏlˈəjē [key], in biology, the study of the structure of all normal and abnormal components of cells and the changes, movements, and transformations of such components. The discipline ...

Franck, James

(Encyclopedia)Franck, James frängk [key], 1882–1964, German physicist. He was professor of physics at Göttingen and at Johns Hopkins (1935–38) and professor of physical chemistry at the Univ. of Chicago from ...