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matrix

(Encyclopedia)matrix, in mathematics, a rectangular array of elements (e.g., numbers) considered as a single entity. A matrix is distinguished by the number of rows and columns it contains. The matrix CE5 is a 2...

Applegarth, Robert

(Encyclopedia)Applegarth, Robert, 1834–1924, English trade union leader, a carpenter by trade. A charter member of the Amalgamated Society of Carpenters and Joiners, he became in 1862 its general secretary. Under...

Randolph, Thomas, English poet and dramatist

(Encyclopedia)Randolph, Thomas, 1605–35, English poet and dramatist. After graduating from Cambridge in 1632, he went to London where he became a disciple of Ben Jonson. His best-known poems are “A Gratulatory ...

Olmsted, Frederick Law

(Encyclopedia)Olmsted, Frederick Law, 1822–1903, American landscape architect and writer, b. Hartford, Conn. Although his Walks and Talks of an American Farmer in England had appeared in 1852, Olmsted first attai...

Harvard College Observatory

(Encyclopedia)Harvard College Observatory, astronomical observatory located in Cambridge, Mass., operated by Harvard (Harvard College at the time of the observatory's founding in 1839). Its equipment includes a 61-...

Carnarvon, Henry Howard Molyneux Herbert, 4th earl of

(Encyclopedia)Carnarvon, Henry Howard Molyneux Herbert, 4th earl of, 1831–90, British statesman. As colonial secretary (1866–67) under the earl of Derby he introduced the British North America Act, which made C...

Wilder, Laura Elizabeth Ingalls

(Encyclopedia)Wilder, Laura Elizabeth Ingalls, 1867–1957, American author of the classic Little House series of children's books, b. Pepin, Wis. She and her pioneer family traveled (1869–79) throughout the Midw...

electrodynamics

(Encyclopedia)electrodynamics, study of phenomena associated with charged bodies in motion and varying electric and magnetic fields (see charge; electricity); since a moving charge produces a magnetic field, electr...

Barnard, Frederick Augustus Porter

(Encyclopedia)Barnard, Frederick Augustus Porter, 1809–89, American educator and mathematician, b. Sheffield, Mass., grad. Yale, 1828. After tutoring at Yale and teaching in institutions for the deaf and mute, he...

Bland, Richard Parks

(Encyclopedia)Bland, Richard Parks, 1835–99, American statesman, b. near Hartford, Ky. He taught in rural schools in Kentucky and Missouri before he went to the gold fields of California in 1855. He was a prospec...