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 #:
000533
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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518 FKAYNE November The voltage developed across the track in the phototube is proportional to the length S uncovered in the clear area of the track. The shaded area is considered sufficiently opaque to contribute no voltage. Now S = Y sec « (27) where S = the length of the scanning line a = the azimuthal deviation of S, and u = S sin a (28) so that S = a0 sec a (l + sin ^ (x + S sin u)\ (29) Multiplying each side by sin a, and adding x to each side x + S sin a = x + a0 tan a + a0 tan a sin — (x + S sin a). (30) A Let y = -£ (x + S sin a) ? (x + a0 tan «) (31) A ft Then (30) becomes or y = z + ft sin ?/. This simplified form is identical with that previously developed7 for the exposure of a variable-density sound track with a two-ribbon light valve and the solution takes the same form. Thus, y — z can be expanded into a Fourier series of z having sine terms only. Thus, y — z = ^ an sin nz. (33) l