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Buchanan, James

(Encyclopedia)Buchanan, James, 1791–1868, 15th President of the United States (1857–61), b. near Mercersburg, Pa., grad. Dickinson College, 1809. Buchanan was nominated as a Democratic candidate for the pres...

Blake, William

(Encyclopedia)Blake, William, 1757–1827, English poet and artist, b. London. Although he exerted a great influence on English romanticism, Blake defies characterization by school, movement, or even period. At the...

Leonardo da Vinci

(Encyclopedia)Leonardo da Vinci də vĭnˈchē, Ital. lāōnärˈdō dä vēnˈchē [key], 1452–1519, Italian painter, sculptor, architect, musician, engineer, and scientist, b. near Vinci, a hill village in Tusc...

Holbein, Hans

(Encyclopedia)Holbein, Hans häns hôlˈbīn [key] the elder, c.1465–1524, German painter and draftsman. Holbein worked principally in Augsburg and Ulm, painting altarpieces for churches and probably creating por...

iconography

(Encyclopedia)iconography īˌkŏnŏgˈrəfē [key] [Gr.,=image-drawing] or iconology [Gr.,=image-study], in art history, the study and interpretation of figural representations, either individual or symbolic, reli...

jet propulsion

(Encyclopedia)CE5 Types of jet engines: In the propeller-driven turbine a stream of high-velocity gases provides the power to drive the turbine and turn the propeller. In the jet-driven turbine the stream of gas...

map projection

(Encyclopedia)map projection, transfer of the features of the surface of the earth or another spherical body onto a flat sheet of paper. Only a globe can represent accurately the shape, orientation, and relative ar...

international monetary system

(Encyclopedia)international monetary system, rules and procedures by which different national currencies are exchanged for each other in world trade. Such a system is necessary to define a common standard of value ...

Alfred

(Encyclopedia)Alfred, 849–99, king of Wessex (871–99), sometimes called Alfred the Great, b. Wantage, Berkshire. All these pursuits were interrupted, but not ended, by new Danish invasions between 892 and 896...

chromatography

(Encyclopedia)chromatography krōˌmətŏgˈrəfē [key], resolution of a chemical mixture into its component compounds by passing it through a system that retards each compound to a varying degree; a system capabl...