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paleomagnetism

(Encyclopedia)paleomagnetism, study of the intensity and orientation of the earth's magnetic field as preserved in the magnetic orientation of certain minerals found in rocks formed throughout geologic time. Paleom...

triceps

(Encyclopedia)triceps, any muscle having three heads, or points of attachment, but especially the triceps brachii at the back of the upper arm. One head originates on the shoulder blade and two on the upper-arm bon...

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...

lobbying

(Encyclopedia)lobbying, practice and profession of influencing governmental decisions, carried out by agents who present the concerns of special interests to legislators and administrators. The term originated in t...

lightship

(Encyclopedia)lightship, moored vessel bearing lights and other signal devices to guide ships and warn of hazards to navigation. Lightships are generally stationed at points where a lighthouse cannot be erected; th...

Kidd, Benjamin

(Encyclopedia)Kidd, Benjamin, 1858–1916, English social philosopher. His most noted work, Social Evolution (1894), sets forth his doctrine of the constant strife between individual and public interest. ...

Marsh, Charles Wesley

(Encyclopedia)Marsh, Charles Wesley, 1834–1918, American inventor and editor, b. Ontario. In 1849 his family moved to De Kalb co., Ill. Assisted by his brother William, he designed a hand-binding harvester and ob...

corns and calluses

(Encyclopedia)corns and calluses, thickenings of the outer layer of skin where there is irritation or constant pressure. Corns are cone-shaped with their points protruding into the dermis, or inner layer of skin. T...

Cormack, Allan MacLeod

(Encyclopedia)Cormack, Allan MacLeod məkloudˈ, côrˈmək [key], 1924–98, American physicist, b. Johannesburg, South Africa. After studying at the Univ. of Cape Town (B.S. physics, 1944, M.S. crystallography, 1...

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...
 

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