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 #:
000683
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 665 Additive Process Any process of color photography by means of which the colors are obtained by adding two or more of the spectral regions of which white light is composed. This may be done by use of color filters in either photography or projection. Neither the negative nor the positive print ordinarily contains color. The subtractive process is exactly the opposite, its prints carrying color from which certain filters subtract. Air Gap Electrically a space between magnetic or electric terminals occupied only by air. Aerial Image Point in the atmosphere where an image is formed by a lens system, particularly by the converging lens of a condenser. Ampere Hour Term employed to express the use of one ampere of current for one hour of time. Is equal to 3,600 coulombs per second. Amplifier ' An equipment used for increasing the amplitude of (a) electrical current, (b) voltage and (or) power. It is accomplished through the control by a weak power, of a greater power supplied by a different power source. Amplifier, Audio Frequency A device by means of which electric currents the frequency of which is in the audio-frequency range may be amplified or "built up." Amplifier, Push-Pull An amplifying device using two amplifying tubes, the purpose being to obtain greater amplification with less distortion.