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 #:
000556
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 553 oscillograph applications. This is especially true for high-speed transients. Despite this widespread use, little information exists concerning the photographic techniques to be used with these oscillographs. While, of course, the basic photographic problems are the same, because of the different nature of oscillographic patterns, certain rather^ startling differences may appear in the conditions. As an illustration, let us consider the photograph of a single transient having a writing rate of 400 inches per microsecond (which is obtainable with present commercial oscillographic equipment). The Fig. 5 — Integrated phenomenon of Fig. 4 showing average value. photographing of such a phenomenon results in the exposure of an individual portion of the film for a time interval of the order of 10 ~n second! This exposure is far shorter than any exposure obtainable by means of any other photographic procedure. In our experience, certain photographic problems have recurred frequently. We feel that considerable laboratory development time and effort can be avoided by use of the techniques described for obviating these problems. We intend to limit our consideration to the special photographic problems in oscillography, excluding those points which are treated in standard photographic texts.