Cinematographic annual : 1930 (1930)

Record Details:

Title:
Cinematographic annual : 1930
Date:
1930
Publisher:
Hollywood : The American Society of Cinematographers, Inc.
Volume:
Cinematographic annual : 1930
Leaf #:
000312
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
{"Media History Digital Library","Richard Koszarski","Jeff Joseph"}
Coordinator:
Media History Digital Library
Description:
Date Added:
March 21, 2024
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292 CINEMATOGRAPHIC ANNUAL a given instant we might see gages in all sorts of stages. If we make a graph of gage readings for such a condition it might resemble Fig. 1. In this diagram the locations of the gages are represented Pi.t/A/GER by the black dots and their readings of pressure above or below normal are represented by the lengths of the dotted lines. Thus the diagram shows that the pressure wave has just reached gage 19, but all gages beyond it are as yet unaffected. Gage 15 is at its greatest pressure above normal, while such gages as 13 and 12 have reached their highest values and dropped down again; 10 has dropped back to normal and gages 9, 8, 7, etc., are showing the effects of backward motion of the plunger; 1 has gone through all stages of the pressure wave and has returned to normal. If we were to represent the situation a short time later it would look like Fig. 2. The wave of pressure has moved to the left and all the gages up to 9 have returned to their normal readings. At