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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...

stereophonic sound

(Encyclopedia)stereophonic sound, sound recorded simultaneously through two or more electronic channels. For live recordings, microphones are placed in different positions relative to the sound source. The recorded...

Comsat

(Encyclopedia)Comsat: see Communications Satellite Corporation; communications satellite. ...

Inmarsat

(Encyclopedia)Inmarsat: see Communications Satellite Corporation; communications satellite. ...

Intelsat

(Encyclopedia)Intelsat: see Communications Satellite Corporation; communications satellite. ...

French horn

(Encyclopedia)CE5 French horn French horn, brass wind musical instrument. Fundamentally a metal tube of narrow conical bore, it is curved into circles because of its great length. The horn ends in a wide flare....

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...

mixer

(Encyclopedia)mixer, either of two electronic devices in which two or more signals are combined. In the type of mixer used in radio receivers, radar receivers, and similar systems, a signal is translated upward or ...

march, in music

(Encyclopedia)march, in music, composition intended to accompany marching. The only constant characteristics of a march are duple meter and a fairly simple rhythmic design. In mood, marches range from the moving de...

abacus, in architecture

(Encyclopedia)abacus ăbˈəkəs [key], in architecture, flat slab forming the top member of a capital. In classical orders it varies from a square form having unmolded sides in the Greek Doric, to thinner proporti...