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

Page scan 000694 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 #:
000694
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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676 RICHARDSON'S BLUEBOOK OF PROJECTION Hot Wire A charged wire — particularly if at high voltage. Horse Power Unit power equaling the expenditure of 33,000 foot pounds per minute. In theory it represents the power exerted by a horse pulling at full strength on a gear-down that will, at walking speed, raise a 33,000 pound weight 12 inches in one minute of time. Image, Screen The image formed by rays from the projection lens upon the screen. Image, Aerial Point in a projected light beam where if a screen be interposed, an image will be formed, as the aerial image of a projector converging lens. Induction The influence exerted either by magnetic fields upon other magnetic fields or by magnetic fields upon current. Induction Motor An alternating current motor the currents for which are led through the field coils only, and not being connected with the outside circuit, the armature receives its torque impulses from currents induced by the varying field set up by the field coils. In such motors the rotating part is termed the "rotor" ; the stationary part is the "stator." Insulating Materials Materials that are very poor conductors of electricity (there is no complete insulation). Of the much used materials the following are among the best. Glass. Mica. Shellac, Porcelain. Slate, Marble and various manufactured products.