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ray, in zoology

(Encyclopedia)ray, extremely flat-bodied cartilaginous marine fish, related to the shark. The pectoral fins of most rays are developed into broad, flat, winglike appendages, attached all along the sides of the head...

ray, in physics

(Encyclopedia)ray, in physics, term denoting the straight line along which light or other form of radiation is propagated from its source. It generally refers to the line of propagation of waves but is also applied...

realism, in art

(Encyclopedia)realism, in art, the movement of the mid-19th cent. formed in reaction against the severely academic production of the French school. Realist painters sought to portray what they saw without idealizin...

realism, in literature

(Encyclopedia)realism, in literature, an approach that attempts to describe life without idealization or romantic subjectivity. Although realism is not limited to any one century or group of writers, it is most oft...

realism, in philosophy

(Encyclopedia)realism, in philosophy. 1 In medieval philosophy realism represented a position taken on the problem of universals. There were two schools of realism. Extreme realism, represented by William of Champe...

Regulus, in astronomy

(Encyclopedia)Regulus rĕgˈyələs [key], brightest star in the constellation Leo; Bayer designation Alpha Leonis; 1992 position R.A. 10h08m, Dec. +12°00′. A bluish-white main-sequence star of spectral class B7...

suspension, in vehicles

(Encyclopedia)suspension, in automobiles, system of springs used to suspend the frame, body, engine, and power train above the wheels. Its principal purpose is to lessen the jarring of the automobile that is caused...

suspension, in chemistry

(Encyclopedia)suspension, in chemistry, mixture of two substances, one of which is finely divided and dispersed in the other. Common suspensions include sand in water, fine soot or dust in air, and droplets of oil ...

Sutton-in-Ashfield

(Encyclopedia)Sutton-in-Ashfield, town (1991 pop. 39,536), Nottinghamshire, central England. There are lace and hosiery factories, coal mines, and other industries. The Church of St. Mary Magdalene dates partly fro...

stock, in botany

(Encyclopedia)stock, in botany, common name for any species of the genus Matthiola, for Malcomia maritima (Virginia stock), and for the wallflower, all belonging to the family Cruciferae (or Brassicaceae; mustard f...