Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

Title:
Journal of the Society of Motion Picture Engineers
Date:
1930-1949
Publisher:
New York, N.Y. : The Society
Volume:
Journal of the Society of Motion Picture Engineers
Leaf #:
000554
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
The Journal of the Society of Motion Picture Engineers (SMPE)Êdocuments the technological progress of the film industry, highlighting technical developments in production and exhibition. Of special interest are articles about special effects, theater practices, lighting, and the introduction of the 16mm format. Initially titled "Transactions of the Journal of the Society of Motion Picture Engineers."Digitized by the Prelinger Library and the Library of Congress Motion Picture, Broadcasting and Recorded Sound Division.
Date Added:
July 19, 2022
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1949 CATHODE-RAY OSCILLOGRAPHY 551 the basic limitations of the human mind, its bandwidth (as devotees of the science of cybernetics may find interesting). One of our basic limitations is the fact that most of us can usually visualize and understand only one phenomenon at a given time. If, for example, we have a four-channel oscillograph, and something is happening simultaneously or asynchronously on all four channels, one would really have to be a superman to be able to study and appreciate all four phenomena at once. By means of an oscillograph, we can make recordings of all four phenomena (Fig. 3) and study them at our leisure over a longer Fig. 3 — Typical four-channel recording. period using the more limited bandwidth of our minds. Fig. 3 shows four such phenomena which might vary independently of one another. This figure shows the input and output voltages and currents of a constantvoltage transformer. Photography in connection with cathode-ray oscillographs may also perform monitoring functions so that it will instantaneously record whatever phenomenon is displayed on the face of the cathode-ray tube. To date, no anticipatory electronic circuits have been developed capable of such a wide range of usefulness. Another advantage