Columbia Encyclopedia

Search results

500 results found

Brahmagupta

(Encyclopedia)Brahmagupta bräˌməgo͝opˈtə [key], c.598–c.660, Indian mathematician and astronomer. He was among the first to meaningfully discuss the concepts of zero and of negative numbers. He wrote in ver...

Callisthenes

(Encyclopedia)Callisthenes kəlĭsˈthənēz [key], c.360–c.327 b.c., Greek historian of Olynthus; nephew of Aristotle. He accompanied Alexander the Great into Asia as the historian of the expedition. At first he...

Herschel

(Encyclopedia)Herschel hûrˈshəl [key], family of distinguished English astronomers. Sir William Herschel,Sir William Herschel, 1738–1822, born Friedrich Wilhelm Herschel, was a great pioneer in astronomy. Bor...

meter, unit of measure

(Encyclopedia)meter, abbr. m, fundamental unit of length in the metric system. The meter was originally defined as 1/10,000,000 of the distance between the equator and either pole; however, the original survey was ...

Lawrence, William Beach

(Encyclopedia)Lawrence, William Beach, 1800–1881, American political leader and jurist, b. New York City. He was appointed secretary of the legation in Great Britain in 1826 and was made (1827) chargé d'affaires...

Leacock, Stephen Butler

(Encyclopedia)Leacock, Stephen Butler, 1869–1944, Canadian economist and humorist, b. England, grad. Univ. of Toronto (B.A., 1891), Univ. of Chicago (Ph.D., 1903). Head of the department of political science and ...

Mahan, Dennis Hart

(Encyclopedia)Mahan, Dennis Hart, 1802–71, American soldier and educator, b. New York City; father of Alfred Thayer Mahan. He graduated (1824) from West Point, and from that year until 1871, except for four years...

De la Beche, Sir Henry Thomas

(Encyclopedia)De la Beche, Sir Henry Thomas də lä bāsh, dĕləbĕshˈ [key], 1796–1855, English geologist. As a result of his private undertaking to prepare a geological map of England, the British government ...

Greenleaf, Simon

(Encyclopedia)Greenleaf, Simon, 1783–1853, American legal writer, b. Newburyport, Mass. A member of the Maine bar, he won a high reputation for legal scholarship early in his career. With the admission (1820) of ...

Angell, James Rowland

(Encyclopedia)Angell, James Rowland, 1869–1949, American educator and psychologist, b. Burlington, Vt., grad. Univ. of Michigan (B.A. 1890; M.A. 1891), M.A. Harvard, 1892; son of James B. Angell. After study abro...