Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine (1914)

Record Details:

Title:
Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine
Date:
1914
Author:
Gage, Simon Henry, 1851-1944
Publisher:
Ithaca, N.Y. : Comstock Publishing Company
Volume:
Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine
Leaf #:
00040
Language:
English
Subjects:
Lantern projection, Motion picture projection
Format:
Books
Contributor:
University of California Libraries
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Bibliography: p. 693-703
Date Added:
July 19, 2022
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CH. I] MAGIC LANTERN WITH DIRECT CURRENT tioned above (§ 16) will avoid this; and furthermore, the operator should start the arc lamp before the lecturer turns off the room lights (§ 25). § 34. When to put the lamp out. — The operator should not turn out the arc lamp until the lecturer turns on the room lights. The intervals of total darkness so common in exhibitions can be avoided by keeping in mind the suggestions in this and the previous section. It is also a good plan for the operator to remove the last slide when the lecturer is through with it, and show a blank disc of light. This will inform the lecturer that all the slides have been exhibited and give him the hint to turn on the room lights. To determine how a lantern slide should be placed in the carrier to give an erect image on the screen : Look through the lantern slide toward something light. Turn it until the picture is right side up and the print reads right, as in this model. Then turn the slide so that the bottom edge is uppermost like the next model. FIG. 7. STANDARD AMERICAN LANTERN SLIDE, FULL SIZE, WITH DIRECTIONS FOR INSERTING IT IN THE CARRIER so THAT THE SCREEN IMAGE WILL BE ERECT.