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 #:
000412
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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April, 1930] EXHAUSTION OF DEVELOPERS 395 of the test strips as the developer was exhausted for any given temperature and time of testing. It is obvious from this chart that a one-minute test at 65°F. is 2mm. 3min. ttnltv 2rrtvr\ FIG. 2. Tests at various bromide concentrations. too short to give the desired information. Likewise, 3 minutes at 75°F. does not show suitable differences. With 2 minutes at 65°F. and 1 or 2 minutes at 70°F., however, there are very striking differences in the appearance of the test strips at different stages of exhaustion.