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communication

(Encyclopedia)communication, transfer of information, such as thoughts and messages, as contrasted with transportation, the transfer of goods and persons (see information theory). The basic forms of communication a...

Pierce, John

(Encyclopedia)Pierce, John, 1910–2002, American electrical engineer, b. Des Moines, Iowa, grad. California Institute of Technology (Ph.D. 1936). Pierce worked at the Bell Telephone Laboratories, where he proposed...

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...

aerial and satellite photography

(Encyclopedia)aerial and satellite photography, technology and science of taking still or moving-picture photographs from a camera mounted on a balloon, airplane, satellite, rocket, or spacecraft. In the 19th cent....

cable television

(Encyclopedia)cable television, the transmission of televised images to viewers by means of coaxial cables. Cable systems receive the television signal, which is sent out over cables to individual subscribers, by a...

Kroemer, Herbert

(Encyclopedia)Kroemer, Herbert, 1928–, German physicist, Ph.D. Univ. of Göttingen, 1952. Kroemer was a researcher at RCA Laboratories in Princeton, N.J. (1954–57), and at Varian Associates in Palo Alto, Calif....

Murdoch, Rupert

(Encyclopedia)Murdoch, Rupert (Keith Rupert Murdoch), 1931–, Australian-American publishing magnate. Combining sensationalist journalism (often reflective of his generally hawkish, strongly conservative political...

Alferov, Zhores Ivanovich

(Encyclopedia)Alferov, Zhores Ivanovich, 1930–2019, Russian physicist, b. Vitebsk (now in Belarus), Ph.D. V. I. Ulyanov Electrotechnical Institute, 1952. He joined the research staff of the A. F. Ioffe Physico-Te...

telephone

(Encyclopedia)CE5 Hand telephone telephone, device for communicating sound, especially speech, usually by means of wires in an electric circuit. The telephones now in general use evolved from the device invente...

digital radio

(Encyclopedia)digital radio, audio broadcasting in which an analog audio signal is converted into a digital signal before being transmitted; also known as digital audio broadcasting (DAB) and high-definition radio....