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 #:
000684
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 SPRAY PROCESSING 681 One liter of developer was placed in each cylinder and 0.02 gram of colloidal silver was added to one of them. To ensure uniformity of treatment, the air flow was set at a high rate so that its composition would be but little changed on emerging from the first developer cylinder, and the two cylinders were interchanged every 15 minutes. The cylinders were stood during the run in a tank of water at 20 degrees centigrade. (HOURS) Fig. 10 — The course of the oxygen depletion in the spray cabinet. The broken lines refer to runs in which the air-return pipe was closed. The results, in Fig. 9, show that colloidal silver had no effect on the rate of autoxidation of hydroquinone, or on the almost zero rate of autoxidation of the Elon while hydroquinone was present in appreciable quantity. However, when the hydroquinone was almost entirely oxidized, the rate of oxidation of the Elon was inhibited by the presence of colloidal silver. The results agree with those of Thomas and Weissberger. Composition of Air in Spray Cabinet Using D76d developer, tests were made to find whether reducing the oxygen content of the air in the cabinet would have a marked in