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Snowden, Edward Joseph

(Encyclopedia)Snowden, Edward Joseph, 1983–, American computer systems administrator and antigovernment activist, b. Elizabeth City, N.C. Snowden worked for the Central Intelligence Agency from 2007 and then (200...

Wichita, city, United States

(Encyclopedia)Wichita wĭchˈĭtô [key], city (1990 pop. 304,011), seat of Sedgwick co., S central Kans., at the confluence of the Arkansas and Little Arkansas rivers; inc. 1870. It is the chief commercial and ind...

Von Neumann, John

(Encyclopedia)Von Neumann, John noiˈmän [key], 1903–57, American mathematician, b. Hungary, Ph.D. Univ. of Budapest, 1926. He came to the United States in 1930 and was naturalized in 1937. He taught (1930–33)...

cathode-ray tube

(Encyclopedia)CE5 Cathode-ray tube cathode-ray tube (CRT), special-purpose electron tube in which electrons are accelerated by high-voltage anodes, formed into a beam by focusing electrodes, and projected towar...

Bezos, Jeffrey Preston

(Encyclopedia)Bezos, Jeffrey Preston bāˈzōs [key], 1964– American business executive and on-line retailing pioneer, b. Albuquerque, N.M., grad. Princeton (B.S.E., 1986). He worked in computer technology for se...

Portland, cities, United States

(Encyclopedia)Portland. 1 City (1990 pop. 64,358), seat of Cumberland co., SW Maine, situated on a small peninsula and adjacent land, with a large, deepwater harbor on Casco Bay; settled c.1632, set off from Falmou...

network

(Encyclopedia)network, in computing, two or more computers connected for the purpose of routing, managing, and storing rapidly changing data. A local area network (LAN), which is restricted by distances of up to on...

Noyce, Robert Norton

(Encyclopedia)Noyce, Robert Norton nois [key], 1927–90, American engineer, inventor, and entrepeneur, b. Burlington, Iowa.; grad. Grinnell College (B.A., 1949), Massachusetts Institute of Technology (Ph.D., 1953)...

Limerick, city, Republic of Ireland

(Encyclopedia)Limerick, city (1991 pop. 56,083), seat of Co. Limerick, SW Republic of Ireland, at the head of the Shannon estuary. The city has a port with two docks. The primary imports are grain, timber, and coal...

Sedna

(Encyclopedia)Sedna, in astronomy, the most distant known large object in the solar system. With a highly eccentric elliptical orbit that ranges from an estimated 76 AU to 937 AU, Sedna also has an extremely long o...