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 #:
00012
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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July, 1939] MOTION PICTURE FILM AND TELEVISION above. To prevent the frequent locking-in of the motor in the wrong position, a special synchronous motor is used which includes an additional d-c winding for fixing the polarity of the poles and thus determining the lock-in position with respect to the a-c power supply. The sound-head used is standard, since the mean speed of the film is 24 frames per second. It has been found that a suitable fly-wheel 71/ TIME 7* FIG. 4. Experimental rocking mirror projector. associated with the intermittent cam prevents any detectable deterioration of the reproduced sound due to the dissymmetry of the intermittent cam. OTHER PROJECTING SEQUENCES AND MECHANISMS There is some evidence that the television picture transmitted by a system depending completely upon the storage principle might not be as satisfactory as one transmitted by a system in which the film image