Abstracts of Technical Articles from Bell System Sources 



In January, 1932, a series of seven lectures by representatives of the 

 Bell Telephone System was given before the Lowell Institute of Boston, 

 Massachusetts. The general title of the series was "The Application 

 of Science in Electrical Communication." 



The lectures were as follows : 



"An Introduction to Research in the Communication Field," by 

 H. D. Arnold, Ph.D., Sc.D., Director of Research, Bell Telephone 

 Laboratories.* 



"Research in Speech and Hearing," by Harvey Fletcher, Ph.D., 

 Acoustical Research Director, Bell Telephone Laboratories. 



"Transoceanic Radio Telephony," by Ralph Bown, Ph.D., Depart- 

 ment of Development and Research, American Telephone and 

 Telegraph Company.* 



"Picture Transmission and Television," by Herbert E. Ives, Ph.D., 

 Sc.D., Electro-Optical Research Director, Bell Telephone Labora- 

 tories.* 



"Talking Motion Pictures and Other By- Products of Communication 

 Research," by John E. Otterson, President, Electrical Research 

 Products, Inc. 



"Utilizing the Results of Fundamental Research in the Communi- 

 cation Field," by Frank B. Jewett, Ph.D., D.Sc, Vice President, 

 American Telephone and Telegraph Company, President, Bell 

 Telephone Laboratories.* 



"Social Aspects of Communication Development," by Arthur W. 

 Page, A.B., Vice President, American Telephone and Telegraph 

 Company.* 



Further Notes on the Detection of Tivo Modulated Waves Which Differ 

 Slightly in Carrier Frequency.^ C. B. Aiken. The present paper 

 deals with the analysis of the detection of two modulated waves of 

 slightly different carrier frequency under the conditions that the 

 carrier amplitude of one wave is much smaller than that of the other 

 and that the modulation of the larger wave is low. These conditions 

 apply in determining the interference which arises during the operation 

 of two broadcast stations on the same frequency assignment when the 



* Published in the April 1932 Bell Telephone Quarterly. 

 1 Proc. I. R. E., March, 1932. 



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