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 #:
000517
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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Fig. 5. Photograph of the surface of an explosive-driven metal plate. Sample Photographs The photographs in Fig. 5 are a few of the frames from a series showing the surface of an explosive-driven metal plate6 by reflected light. An explosive flash with an argon atmosphere was used to illuminate the plate and the camera was operating at about 3,500,000 frames/ sec. The first frame shows the surface of the plate just before it was struck by a shock from behind. The dark lines are from the reticle in the optical system of the camera. The fine triple-line reticle is painted on the plate. The second frame shows the plate within 0.3 /isec after being struck by the shock. There is a considerable increase in the contrast of the reticle lines and trivial imperfections of the plate surface show up strongly. A velocity of 3,000 m/sec is attained almost immediately and the movement is easily ' detected on the succeeding frames by examination of the relative positions of the two reticles. Figure 6 shows a contact print of the sequence of negatives obtained when exploding primacord was photographed in silhouette at 1,700,000 frames/sec. A scale has been placed adjacent to the 508 December 1952 Journal of the SMPTE Vol. 59