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 #:
000705
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:
June 04, 2024
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DEFINITIONS 687 Push Button A single-pole, spring-controlled contact switch manually operated by pushing on a "button." Quick-Breaking Switch A switch which breaks contact very suddenly by reason of spring action. Racing As applied to a motor or generator, an acceleration of speed when suddenly relieved of all or a portion of its load. Radius Half the diameter of a circle. Rain Term applied to an effect on the screen caused by scratches on the film that have filled with dirt and are therefore either partly or wholly opaque. Ratio of Intermittent Movement Ratio of time intermittent star and sprocket are in motion to time they are at rest during each cycle of intermittent action. Ratio of Transformation In a transformer, the ratio of primary to secondary voltage. It is expressed : as number of turns in primary coil are to number of turns in secondary coil, so is primary voltage to secondary voltage. Reactance Coil Same as choke coil. A coil of insulated wire wound around a suitable iron core for the purpose of providing induction with low resistance. Used to control a.c. current with small power loss. Also know as "impedance coil."