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Schliemann, Heinrich

(Encyclopedia)Schliemann, Heinrich hīnˈrĭkh shlēˈmän [key], 1822–90, German archaeologist, discoverer of the ruins of Troy. He accumulated a fortune in the indigo trade and as a military contractor and reti...

Revolutionary Guards

(Encyclopedia)Revolutionary Guards, officially the Islamic Revolution Guards Corps (IRGC) or Pasdaran, Iranian military group formed in the aftermath of the 1979 revolution by young Islamic activists loyal to Ayato...

airship

(Encyclopedia)airship, an aircraft that consists of a cigar-shaped gas bag, or envelope, filled with a lighter-than-air gas to provide lift, a propulsion system, a steering mechanism, and a gondola accommodating pa...

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...

gang

(Encyclopedia)gang, group of people organized for a common purpose, often criminal. Gangs of criminals were long known on the American frontier and also flourished in urban settings. Notorious were the outlaws led ...

automation

(Encyclopedia)automation, automatic operation and control of machinery or processes by devices, such as robots that can make and execute decisions without human intervention. The principal feature of such devices i...

mechanized warfare

(Encyclopedia)mechanized warfare, employment of modern mobile attack and defense tactics that depend upon machines, more particularly upon vehicles powered by gasoline and diesel engines. Central to the waging of m...

von Braun, Wernher

(Encyclopedia)von Braun, Wernher vôn broun [key], 1912–77, German-American rocket scientist and astronautics engineer, b. Germany, grad. Berlin Technological Institute (B.S., 1932), Univ. of Berlin (Ph.D., 1934)...

Silk Road

(Encyclopedia)Silk Road, ancient overland trade route linking Asia and Europe, consisting of a network of caravan routes running from China across central Asia to the shores of the Mediterranean. Its starting point...

hafnium

(Encyclopedia)hafnium hăfˈnēəm [key], metallic chemical element; symbol Hf; at. no. 72; at. wt. 178.49; m.p. about 2,227℃; b.p. 4,602℃; sp. gr. 13.31 at 20℃; valence +4. Hafnium is a lustrous, ductile, si...