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Cameroon, country

(Encyclopedia)CE5 Cameroon kămˌəro͞onˈ [key], Fr. Cameroun, officially Republic of Cameroon, republ...

apartheid

(Encyclopedia)apartheid əpärtˈhīt [key] [Afrik.,=apartness], system of racial segregation peculiar to the Republic of South Africa, the legal basis of which was largely repealed in 1991–92. Despite public de...

Massachusetts

(Encyclopedia)CE5 Massachusetts măsəcho͞oˈsĭts [key], most populous of the New England states of the NE United States. It is bordered by New York (W), Vermont and New Hampshire (N), the Atlantic Ocean (E, S...

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...

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...