File:Bell telephone magazine (1922) (14756060282).jpg

Identifier: belltelephone6667mag00amerrich (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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he future, we see a constantlyexpanding need for more and better (communications) satellites as well as more andbetter cables and other facilities, Mr. Win-gert said. The demonstration call to Geneva wasmade—coincidentally—almost 90 years fromthe day Alexander Graham Bell came to Phila-delphia to show his new invention, the tele-phone, at the 1876 Centennial Exposition. Bell Labs Studies DNA Molecule ■I The molecule which carries genetic in-formation needed to reproduce livingcreatures—from bacteria to human beings—is the polymer deoxyribonucleic acid (DNA).The efficiency and accuracy with which vastamounts of information are stored in, readout of, and copied by DNA molecules areunmatched and make the most sophisticatedcomputers appear like the crudest toys. Scientists at Bell Laboratories are engagedin detailed physical and chemical studies ofthese amazing molecules. They are seekingto learn all they can about how the biologi-cal molecules store and transmit information; 59
Text Appearing After Image:
R. G. Shulman (left) and J. Eisini;cr oj Bell Laboratories discuss experiment designed toinvestigate excited electronic states of DNA. Model of DNA molecule appears at jar left. such knowledge may one day be useful toengineers trying to Improve our man-madecommunications system. The DNA molecule uses a languagemade up of a sequential arrangement of fourdifferent base compounds. A single wordin the DNA language consists of three con-secutive bases. When one of these basecompounds in the molecule is altered oreliminated or inserted, the genetic messageis changed and a biological mutation results.This mutation may be inconsequental, bene-ficial, harmful or lethal to the living cell. Itmay occur spontaneously, by chemical in-teraction involving the DNA or by radiationdamage to the DNA. Bell Laboratories scientists have concen-trated their studies on the detailed propertiesof DNA molecules as they exist in the mo-ment after DNA has absorbed radiation andbefore permanent damage has occurred

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