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interference

(Encyclopedia)CE5 Constructive interference: Two crests or two troughs meet and combine (A, B, C). Destructive interference: A crest and a trough meet and cancel each other (D, E, F). interference, in physics, ...

North American Native art

(Encyclopedia)North American Native art, diverse traditional arts of Native North Americans. In recent years Native American arts have become commodities collected and marketed by nonindigenous Americans and Europe...

Shanghai

(Encyclopedia)Shanghai shăngˈhīˈ, shängˈhīˈ [key], city and municipality (2010 pop. 23,019,148), in, but independent of, Jiangsu prov., E China, on the Huangpu (Whangpoo) River where it flows into the Chang...

Hong Kong

(Encyclopedia)CE5 Hong Kong hŏng kŏng [key], Mandarin Xianggang, special administrative region of China, formerly a British crown colony (2015 est. pop. 7,246,000), land area 422 sq mi (1,092 sq km), adjacent ...

Damascus

(Encyclopedia)Damascus dəmăsˈkəs [key], Arabic Dimashq or ash-Sham, city (1995 est. pop. 1,500,000), capital of Syria and of its Damascus governorate, SW Syria, on the eastern edge of the Anti-Lebanon Mts. It i...

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...

Pan-Americanism

(Encyclopedia)Pan-Americanism, movement toward commercial, social, economic, military, and political cooperation among the nations of North, Central, and South America. In the early 20th cent., U.S. manipulation ...

Roosevelt, Franklin Delano

(Encyclopedia)Roosevelt, Franklin Delano rōˈzəvĕlt [key], 1882–1945, 32d President of the United States (1933–45), b. Hyde Park, N.Y. Apart from extending diplomatic recognition to the USSR (1933), th...

Newfoundland and Labrador, province, Canada

(Encyclopedia)CE5 Newfoundland and Labrador nyo͞oˈfənlənd, nyo͞ofənlăndˈ; lăbˈrədôrˌ [key], province (2001 pop. 512,930), 156,185 sq mi (404,519 sq km), E Canada. The province consists of the island...

Papua New Guinea

(Encyclopedia)Papua New Guinea păpˈo͞oə, –yo͞oə, gĭnˈē [key], officially Independent State of Papua New Guinea, independent Commonwealth nation (2015 est. pop. 6,672,000), 183,540 sq mi (475,369 sq km), ...