Nation projector carbons (1935)

Record Details:

Title:
Nation projector carbons
Date:
1935
Publisher:
Toronto : Canadian National Carbon Company Ltd.
Volume:
Nation projector carbons
Leaf #:
00014
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:
May 30, 2024
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National Projector Carbons and in maintaining close control over every process in the six to eight weeks' period of production. Projector carbons must conduct electricity at very high current densities ranging from 140 to over 1000 amperes per square inch. At the same time, they must conduct little heat from the arc in order that the maximum possible crater temperatures may be maintained and a minimum amount of heat conducted to the operating mechanism of the lamp. Only carbon can satisfy these conflicting demands. Constant research is necessary to produce new types which will meet or anticipate the demands created by the steady development of the motion picture industry. 10