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patina

(Encyclopedia)patina pătˈənə [key], coating of carbonate of copper on articles of copper or bronze, formed after long exposure to a moist atmosphere or burial in the earth. Although commonly green, patina varie...

flageolet

(Encyclopedia)flageolet flăjəlĕtˈ [key], small straight flute of conical bore, with a whistle mouthpiece. The number of finger holes varies, as does the length, which may be from 4 to 12 in (10.2–30.5 cm). Th...

Hermite, Charles

(Encyclopedia)Hermite, Charles shärl ĕrmētˈ [key], 1822–1901, French mathematician. A professor at the École polytechnique, Paris (1869–76), and at the Faculty of Sciences (1869–97), he exerted a strong ...

Herriman, George

(Encyclopedia)Herriman, George, 1880–1944, American cartoonist, b. New Orleans into a prominent mixed-race Creole family. He created the fanciful, abstractly drawn comic strip Krazy Kat (1913–44), which feature...

Hilbert, David

(Encyclopedia)Hilbert, David, 1862–1943, German mathematician, professor at Königsberg (1886–95) and Göttingen (1895–1930), b. Königsberg, Germany. His proof of the theorum of invariants (1890) supplanted ...

Edwards Air Force Base

(Encyclopedia)Edwards Air Force Base, U.S. military installation, 301,000 acres (121,805 hectares), S Calif., NE of Lancaster; est. 1933. It is one of the largest air force bases in the United States and has the wo...

Hartford Foundation

(Encyclopedia)Hartford Foundation, fund established (1929) by retail food merchants John A. Hartford (1872–1951) and George L. Hartford (1864–1957) of the Great Atlantic and Pacific Tea Company (A&P) as a p...

Ann Arbor

(Encyclopedia)Ann Arbor, city (2020 pop. 123,851), seat of Washtenaw co., S Mich., on the Huron River; inc. 1851. It is a research and educational center, with a large number of government and industria...

Heifetz, Jascha

(Encyclopedia)Heifetz, Jascha yäˈshə hīˈfĭts [key], 1901–87, Russian-American violinist, b. Vilna. He studied first with his father and in 1910 became a pupil of Leopold Auer at the St. Petersburg Conservat...

Kallio, Kyösti

(Encyclopedia)Kallio, Kyösti küˈöstē kälˈlyô [key], 1873–1940, Finnish political leader. Of peasant background, he entered politics and was a vocal advocate of Finnish independence from Russia. Minister o...