F. H. Richardson's bluebook of projection (1935)

Record Details:

Title:
F. H. Richardson's bluebook of projection
Date:
1935
Publisher:
New York : Quigley Publishing Company, Inc.
Volume:
F. H. Richardson's bluebook of projection
Leaf #:
000529
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
{"Media History Digital Library","Jeff Joseph"}
Coordinator:
Media History Digital Library
Description:
Date Added:
August 01, 2024
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w CHAPTER XXVII SOURCES OF SOUND CURRENT (1) The alternating (or pulsating direct) current that represents sound in the projection room is obtained from one of three sources : ... (a) The film reproducing system, which contains. a photo-cell circuit. (b) The disc or phonograph reproducer. (c) The announcing microphone. The Film Reproducing System Figure 117 is an accurate diagram of the essentials of a film reproducing system. It shows the position of the photo-electric cell with relation to its light source and to the moving film upon which a sound record has been "ILAMENT P-E.Cell. Figure 117 photographed. Figure 118 is a photograph showing the apparatus diagrammed in Figure 117. By studying these two illustrations the real simplicity of the film reproducing system will readily appear. To the right of the lamp, in Figure 117, is an oblong case containing two sets of lenses, and a "slit." This is 511