File:Bell telephone magazine (1922) (14756059425).jpg

Identifier: belltelephonemag4344amerrich (find matches)
Title: Bell telephone magazine
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company American Telephone and Telegraph Company. Information Dept
Subjects: Telephone
Publisher: (New York, American Telephone and Telegraph Co., etc.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive

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large chunks of science and engineeringpractice have been built. Single sidebandtransmission of electronic signals, whichpermits more information to be carriedon a communication channel, is a case inpoint. So is the idea of negative feedbackin amplifiers, a concept of Harold S.Black, which permits signals to be am-plified many times without significantdistortion. Without negative feedback,high fidelity reproduction of sound wouldbe difficult, and long distance telephonywould have been virtually impossible.Bell Laboratories has figuratively writtenthe books on switching theory and net- work analysis, developed the mathemat-ics for quality control, and created avirtually new science through ClaudeShannons work on Information Theory.But these spectaculars are only a tinypart of the work that pours out of in-dividual offices and laboratories, and anypicture reprt^senting Bell Laboratories asa giant establishment primarily devotedto scientific research alone would be adistorted one indeed.
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■ By far the largest proportion ofwork at Bell Laboratories is con-cerned with converting the results of re-search—which you might think of as newknowledge—into technology—which iswhat exists and works and makes ourtelephone network capable of continuingto provide service as it grows and the re-quirements on it change. Out of the intensive research and ex-perimentation on the properties of semi-conductors came the transistor inventionof John Bardeen, Walter H. Brattain andWilliam Shockley. Within two years ofthe invention of the transistor, hundreds more engineers and scientists were atwork improving the devices, developingways to make them economically, andinventing ways to use them. Today,about 80 per cent of the developmenteffort goes into designing systems thatare dependent on the new art solidstate devices. Jack A. Morton, vice presi-dent of electronias components develop-ment, has said, Once you can provesomething is feasible, it then becomes amatter of judicious applica

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