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 #:
000679
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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676 LEVENSON TABLE I December Developer System Vol. of Developer Liters Initial Rate of Oxidation Per Concentration Hour per Liter Elon HQ Elon HQ D76d S-R Spray 7.2 2 30 4 .88 0 .17 0 .30 L-R Spray (121 1.95 4 .94 0 .11 0 .27 \130 2. 01 5 .15 0 .11 0 .27 Quiet 130 2.24 5 .57 0 0 Air-trapping 130 2. 06 5 .45 0 .02 0 .074 Air-bubbling 130 2.10 5 .33 0 .035 0 .08 D76d S-R Spray 7.2 2. 08 4 .66 0 .12 0 .26 +Ag L-R Spray Quiet 130 2. 06 5 .5 0 .02 0 Air-trapping 130 2.06 5.42 0 .02 0 .074 Air-bubbling 130 1. 92 5 .33 0 .03 0 .063 Positive S-R Spray 7 1. 64 3 .01 0 .08 1 .78 developer L-R Spray 130 1. 83 3.39 0 .014 0 .305 pH 10.0 Positive S-R Spray 6.3 1. 70 3 .35 0 .08 2 .6 developer L-R Spray 118 1. 76 3 48 0, 01 0 .50 pH 10.5 Quiet 130 2. 04 3 ,77 0 0 .008 Air-trapping 130 2.18 3 88 0 0 .076 Air-bubbling 130 1. 77 3 51 0 0 .099 Positive S-R Spray 6.3 1. 60 3. 26 0. 07 2 .88 developer L-R Spray pR 10.5 Quiet 130 2. 00 3. 76 0 0 + Ag Air-trapping 130 2. 08 3. 83 0 0 113 Air-bubbling 130 1. 79 3. 58 0 0 106 for some oxidation in mixing and for some dilution by water remaining in the systems from the washing after the previous run. After installing the bath in any one of the systems, it was circulated for a few minutes to ensure uniformity, the pH. was checked, and then the first sample was drawn for analysis. The run commenced immediately, since most of them were of long duration, and were well advanced before the first analysis was complete. Thus there was no convenient opportunity to .adjust each bath to exactly the same initial concentrations of Elon and hydroquinone before starting the run. Whereas in the first runs the volume of developer used in the S-R Spray system was 6.3 liters, it was found convenient later to use 7 liters of developer.