F. H. Richardson's bluebook of projection (1935)

Page scan 000691 from F. H. Richardson's bluebook of projection

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 #:
000691
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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DEFINITIONS 673 Electromotive Force (E.M.F.) The force or pressure which creates and maintains an electric current in or through a conductor. It is regarded as pressure. It is measured in volts. It is abbreviated E.M.F. Emulsion The light-sensitive substance with which him is coated, upon which the photographic print is impressed by light action. Exciter Lamp Lamp supplying light to the photo-electric cell, thus creating electric currents from which sound is recreated. Fa lire illicit (F. or Fahr.) A standard temperature scale in which 32 degrees represents the melting point of ice and 212 degrees the boiling point of water at sea level. To reduce Centigrade to Fahrenheit (C. to Fahr.) multiply degrees Centigrade by 1.8 and add 32. Fader Potentiometer employed to control sound volume in projection. Fade-Away The lowering of observed screen brilliancy when a screen is viewed at a considerable angle to its surface. Specular or semi-specular screen surfaces have heaviest fade-away ; diffusive screens least. Fade-in — Fade-Out Gradual illumination of screen image or its gradual fading away through gradual opening or closing of lens. Floating Battery A battery so connected to a parallel system that the system will receive current from the batterv, or the