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Amalekites

(Encyclopedia)Amalekites ămˈələkīts [key], in the Bible, aboriginal people of Canaan and the Sinai peninsula. They waged constant warfare against the Hebrews until dispersed by Saul. Their ancestor, Amalek, fo...

dielectric

(Encyclopedia)dielectric dīˌĭlĕkˈtrĭk [key], material that does not conduct electricity readily, i.e., an insulator (see insulation). A good dielectric should also have other properties: It must resist breakd...

Quin, James

(Encyclopedia)Quin, James, 1693–1766, English actor. He made his London debut in 1714. The successor of Barton Booth, he was the last of the declamatory school. At his best in declaiming the great tragic roles, Q...

aberration of starlight

(Encyclopedia)aberration of starlight, displacement of the apparent path of light from a star, resulting in a displacement of the apparent position of the star from its true position; discovered by the English astr...

Clarke, Samuel

(Encyclopedia)Clarke, Samuel, 1675–1729, English philosopher and divine. His chief interest was rational theology, and, although a critic of the deists, he was in sympathy with some of their ideas. He supported t...

Aram

(Encyclopedia)Aram āˈrăm [key], ancient country and people centered in Damascus in S Syria between the 11th and 8th cent. b.c. The Bible records constant contacts between the Hebrews and Aram. The Aramaeans spok...

Albemarle, Arnold Joost van Keppel, 1st earl of

(Encyclopedia)Albemarle, Arnold Joost van Keppel, 1st earl of ălˈbəmärl [key], 1669–1718, Dutch adherent and constant companion of William III of England. He accompanied the future king to England (1688) and ...

Poynting, John Henry

(Encyclopedia)Poynting, John Henry, 1852–1914, British physicist. He was educated at Liverpool and Cambridge and was professor of physics at the Univ. of Birmingham for most of his life. He is best known for the ...

Langley, Samuel Pierpont

(Encyclopedia)Langley, Samuel Pierpont, 1834–1906, American scientist, b. Roxbury, Mass., received only a high school education but continued his studies in science in Boston libraries. He became, in 1866, profes...

dissociation

(Encyclopedia)dissociation, in chemistry, separation of a substance into atoms or ions. Thermal dissociation occurs at high temperatures. For example, hydrogen molecules (H2) dissociate into atoms (H) at very high ...