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 #:
000702
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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684 RICHARDSON'S BLUEBOOK OF PROJECTION Phase Splitter A device by means of which two currents may be produced from a single phase current — the currents differing in phase. Phase In vibratory or wave motion a phase is that portion of any complete movement, either in angle or in time, that any moving point has executed. Phosphor Bronze An alloy of copper and tin to which 2 to 5 percent of phosphorous has been added. Polarity Switch A double-pole, double-throw switch so wired that reversing its position ("throwing it over") reverses the polarity of the circuit it controls. Photo Electric Cell Some chemical elements throw off electrons when exposed to light, the amount thus emitted depending exactly upon the intensity of incident light at any instant of time. This has the effect of transforming light into electric energy of strength proportional to the intensity of the light that produced it. A photo electric cell contains a surface of such elements and a positively charged electrode which attracts to it the electrons emitted or thrown off. Photo-Electric Cell Amplifier The amplifier that provides first amplification to the enormously weak currents set up in the photo-electric cell. Photometer Any device used for measuring light intensity. Picture Cycle Term applied to the entire series of operations as be