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Dow Jones Average

(Encyclopedia)Dow Jones Average, indicators used to measure and report value changes in representative stock groupings on the New York stock exchange. There are four different averages—industrial stocks, transpor...

Foucault, Jean Bernard Léon

(Encyclopedia)Foucault, Jean Bernard Léon zhäN bĕrnärˈ lāôNˈ fo͞okōˈ [key], 1819–68, French physicist. Known especially for his research on the speed of light, he determined its velocity in air and fou...

manor house

(Encyclopedia)manor house, dwelling house of the feudal lord of a manor, occupied by him only on occasional visits if he held many manors. Although not built specifically for fortification as castles were, many man...

bourse

(Encyclopedia)bourse bo͝ors [key], term applied to a European stock exchange. The first international bourse was established in Antwerp in the 16th cent. The Paris bourse, dating from 1720 but completely reorganiz...

Black Monday

(Encyclopedia)Black Monday, Oct. 19, 1987, in U.S. history, day of financial panic. The Dow Jones Average fell 508.32 points, a drop of 22.6%, the largest since 1914. The point decline as well as the volume, 604.33...

beryl

(Encyclopedia)beryl bĕrˈĭl [key], mineral, a silicate of beryllium and aluminum, Be3Al2Si6O18, extremely hard, occurring in hexagonal crystals that may be of enormous size and are usually white, yellow, green, b...

Canada balsam

(Encyclopedia)Canada balsam, yellow, oily, resinous exudation obtained from the balsam fir. It is an oleoresin (see resin) with a pleasant odor but a biting taste. It is a turpentine rather than a true balsam. On s...

Quesnel, Pasquier

(Encyclopedia)Quesnel, Pasquier päskyāˈ kĕnĕlˈ [key], 1634–1719, French Jansenist writer. He entered the Congregation of the Oratory in 1657 and was made director of the seminary at Paris in 1662. His editi...

Francis, Sam

(Encyclopedia)Francis, Sam, 1923–94, American painter, b. San Mateo, Calif. Educated in medicine, Francis began painting while recovering from an injury received in World War II. His mural-sized paintings are sta...

value, in colorimetry

(Encyclopedia)value, in colorimetry: see color.