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Dessau

(Encyclopedia)Dessau, city, Saxony-Anhalt, E Germany, at the confluence of the Elbe and Mulde rivers. It is an industrial city, river port, and rail and road transpor...

air traffic control

(Encyclopedia)air traffic control, the system by which airplanes are safely routed into and out of major airports. Air traffic control in the United States is centered in a number of regional control centers that r...

Hiller, Stanley, Jr.

(Encyclopedia)Hiller, Stanley, Jr., 1924–2006, American aeronautical engineer and business executive, b. San Francisco. At 12 years old, he designed and produced gas-propelled toy cars, a business that led to the...

Healey, Denis Winston Healey, Baron

(Encyclopedia)Healey, Denis Winston Healey, Baron, 1917–2015, British political leader, grad. Oxford (1940). He served in the British army (1940–45), then joined the Labour party and began a long career in parl...

Hagerstown

(Encyclopedia)Hagerstown hāˈgərztounˌ [key], city (2020 pop. 43,527), seat of Washington co., NW Md., on ...

loran

(Encyclopedia)loran lôrˈănˌ [key], long-range, accurate radio navigational system used by a ship or aircraft to confirm or to determine its geographical position. The term loran is derived from the words long-r...

Khabarovsk

(Encyclopedia)Khabarovsk khəbäˈrəfsk, khəbərôfskˈ [key], city (1989 pop. 601,000), capital of Khabarovsk Territory and the administrative center of the Far Eastern federal district, Russian Far East, on the...

Sunderland

(Encyclopedia)Sunderland, city and metropolitan borough (1991 pop. 195,064), NE England, at the mouth of the Wear River. The city was established as a shipbuilding center and a coal-shipping port in the 14th cent; ...

Syracuse, city, United States

(Encyclopedia)Syracuse sĭrˈəkyo͞os, sĕrˈ– [key], city (1990 pop. 163,860), seat of Onondaga co., central N.Y., on Onondaga Lake and the Erie Canal; settled c.1788, inc. as a city 1848. It is a port of entry...

sonic boom

(Encyclopedia)CE5 Sonic boom wave pattern from a supersonic aircraft and variation in pressure sonic boom, shock wave produced by an object moving through the air at supersonic speed, i.e., faster than the spee...