Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine, fully illustrated with plates and with over 400 text-figures (1914)

Record Details:

Title:
Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine, fully illustrated with plates and with over 400 text-figures
Date:
1914
Author:
Gage, Simon Henry, 1851-1946
Publisher:
Ithaca, N.Y. : Comstock Publishing Co.
Volume:
Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine, fully illustrated with plates and with over 400 text-figures
Leaf #:
000210
Language:
English
Format:
Books
Contributor:
Gerstein - University of Toronto
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Bibliography: p. 693-703
Date Added:
July 19, 2022
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CH. VII] TROUBLES IN OPAQUE PROJECTION 195 ยง 296. Troubles: i . The one great trouble will be a dim screen image. This cannot be wholly avoided. It can be made tolerably good: ( i ) by having the room very dark ; ( 2 ) by using a powerful radiant; (3) by having a projection objective of large aperture; (4) by magnifying the screen image very moderately (5 to 10 diameters). FIG. no. MODEL 8 DELINEASCOPE FOR ALL KINDS OF PROJECTION. (Cut loaned by the Spencer Lens Co.). In this instrument there is provision for lantern-slide projection with the slides or other objeets in a vertical or in a horizontal position. It provides for opaque objects in a horizontal position and lighted directly by the radiant (fig. in), and for objects in museum jars in a vertical or horizontal position. Finally it provides for micro-projection with the objects in a vertical position or in a horizontal position, and for the drawing of objects on a horizontal or on a vertical surface.