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Ireland, Northern

(Encyclopedia)CE5 Ireland, Northern, division of the United Kingdom of Great Britain and Northern Ireland, 5,462 sq mi (14,147 sq km), NE Ireland. Made up of six o...

atmosphere

(Encyclopedia)CE5 Atmosphere atmosphere [Gr.,=sphere of air], the mixture of gases surrounding a celestial body with sufficient gravity to maintain it. Although some details about the atmospheres of other plane...

laser

(Encyclopedia)CE5 Ordinary light sources produce incoherent light, while a laser produces a beam of coherent light. laser [acronym for light amplification by stimulated emission of radiation], device for the cr...

plate tectonics

(Encyclopedia)CE5 Plate tectonics: Map of the world showing major plates and plate boundaries CE5 Plate tectonics: Schematic model of the oceanic crust, showing the three types of plate boundaries plate tect...

air forces

(Encyclopedia)air forces, those portions of a nation's military organization employing heavier-than-air aircraft for reconnaissance, support of ground troops, aerial combat, and bombing of enemy lines of communicat...

woman suffrage

(Encyclopedia)woman suffrage, the right of women to vote. Throughout the latter part of the 19th cent. the issue of women's voting rights was an important phase of feminism. On the European mainland, Finland (1...

Colorado, state, United States

(Encyclopedia)CE5 Colorado kŏlərădˈə, –rădˈō, –räˈdō [key], state, W central United States, one of the Rocky Mt. states. It is bordered by Wyoming (N), Nebraska (N, E), Kansas (E), Oklahoma and Ne...

Russian Revolution

(Encyclopedia)Russian Revolution, violent upheaval in Russia in 1917 that overthrew the czarist government. The civil war between the Bolsheviks (Reds) and the anti-Bolsheviks (Whites) ravaged Russia until 1920. ...

Charles II, king of England, Scotland, and Ireland

(Encyclopedia)Charles II, 1630–85, king of England, Scotland, and Ireland (1660–85), eldest surviving son of Charles I and Henrietta Maria. Charles was a ruler of considerable political skill. His reign was m...

Communist party, in the United States

(Encyclopedia)Communist party, in the United States, political party that espoused the Marxist-Leninist principles of communism. In 1945, Browder's policy was attacked as being one of the “right deviationism,�...