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e-commerce

(Encyclopedia)e-commerce, commerce conducted over the Internet, most often via the World Wide Web. E-commerce can apply to purchases made through the Web or to business-to-business activities such as inventory tran...

Los Alamos

(Encyclopedia)Los Alamos lôs ălˈəmōsˌ, lŏs [key], uninc. town (1990 pop. 11,455), seat of Los Alamos co., N central N.Mex. It is on a long mesa extending from the Jemez Mts. The U.S. government chose the sit...

multiplexing

(Encyclopedia)multiplexing, in communication, technique whereby two or more independent messages, or information-bearing signals, are carried by a single common medium, or channel. When multiplexing is performed, t...

magnetic resonance imaging

(Encyclopedia)magnetic resonance imaging (MRI), noninvasive diagnostic technique that uses nuclear magnetic resonance to produce cross-sectional images of organs and other internal body structures. The patient lies...

Manassas

(Encyclopedia)Manassas mənăsˈəs [key], town (1990 pop. 27,957), seat of Prince William co., N Va., in a farm area; inc. 1873, rechartered 1938. Manassas has become a growing residential town with retail shoppin...

Bailyn, Bernard

(Encyclopedia)Bailyn, Bernard bāˈlĭn [key], 1922–2020, U.S. historian, b. Hartford, Conn. After receiving his Ph.D. from Harvard (1953), he taught U.S. colonial history there, becoming a full professor in 1961...

hypertext

(Encyclopedia)hypertext, technique for organizing computer databases or documents to facilitate the nonsequential retrieval of information. Related pieces of information are connected by preestablished or user-crea...

Durham, city, United States

(Encyclopedia)Durham dûrˈăm [key], city (2020 pop. 324,833), seat of Durham co., N central N.C., in the ...

Western Union Telegraph Company

(Encyclopedia)Western Union Telegraph Company, enterprise created (1851) to provide telegraphic communications services in the United States. Originally known as the New York and Mississippi Valley Printing Telegra...

diode

(Encyclopedia)diode dīˈōd [key], two-terminal electronic device that permits current flow predominantly in only one direction. Most diodes are semiconductor devices; diode electron tubes are now used only for a ...