Richardson's handbook of projection (1930)

Record Details:

Title:
Richardson's handbook of projection
Date:
1930
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000134
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
August 01, 2024
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1058 HANDBOOK OF PROJECTION FOR in perfect condition, (b) That the exciting lamp filament amperage be at exactly the correct value, which same may be obtained from your operating instruction book or from your Service Engineer, (c) That the light be correctly adjusted (not focused, but adjusted) upon the slit, (d) That the light from the slit be property focused upon the film sound track, (e) That the slit image be correctly centered sidewise at the film sound track, and (f) that the sound gate aperture, slit assembly lenses and exciting lamp all be perfectly clean. Let us now examine the exciting lamp, three pictures of which appear in Fig. 394. These are the type of Figure 394. exciting lamp used in all the sound reproducing equipment dealt with in this book. A is a lamp in perfect condition. Glass clear and unclouded ; filament perfectly straight. B is a lamp which has been used entirely too long. The interior of its globe is badly blackened by deposit, though its filament still is in apparently perfect