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Field, Erastus Salisbury

(Encyclopedia)Field, Erastus Salisbury, 1805–1900, American painter, b. Leverett, Mass. Field's paintings, executed in a primitive manner, included biblical and classical themes and portraits. His famous Historic...

field, in algebra

(Encyclopedia)field, in algebra, set of elements (usually numbers) that may be combined under the operations of addition and multiplication so that it constitutes an additive group, the nonzero elements form a mult...

field, in physics

(Encyclopedia)field, in physics, region throughout which a force may be exerted; examples are the gravitational, electric, and magnetic fields that surround, respectively, masses, electric charges, and magnets. The...

field-effect transistor

(Encyclopedia)field-effect transistor: see transistor. ...

field-emission microscope

(Encyclopedia)field-emission microscope: see microscope. ...

field-ion microscope

(Encyclopedia)field-ion microscope: see microscope. ...

Stockton, Robert Field

(Encyclopedia)Stockton, Robert Field, 1795–1866, American naval officer, b. Princeton, N.J. He left the College of New Jersey (now Princeton) to enter the U.S. Navy at 16 and served in the War of 1812 and in the ...

quantum field theory

(Encyclopedia)quantum field theory, study of the quantum mechanical interaction of elementary particles and fields. Quantum field theory applied to the understanding of electromagnetism is called quantum electrodyn...

Cory, William Johnson

(Encyclopedia)Cory, William Johnson, 1823–92, English poet and classicist. He was assistant master at Eton from 1845 to 1872. His verse, of which Ionica (1858) is the best known, consists primarily of imitations ...

Heade, Martin Johnson

(Encyclopedia)Heade, Martin Johnson hĕd [key], 1819–1904, American painter, b. Lumberville, Pa. He studied briefly with Edward Hicks and in Europe, and later traveled in Central and South America. Heade is assoc...