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 #:
00080
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] DO AND DO NOT WITH THE MAGIC LANTERN 8. Open the switch before inserting or changing carbons. 9. Center the parts of the lantern when it is first installed (§ 5i-6o). 10. When the condenser and objective are once centered they should be fixed in position (§ 51). 1 1 . Use the fine adjustments on the arc lamp (fig. 3) for centering the light on the screen after the first centering. Look at the carbons through the lamp-house window occasionally to make sure that they are in the correct relative position (§ 79). 12. Make sure that the arc lamp and condenser, the condenser and objective are separated the right distance (§ 55 56). 13. For the triple condenser select a condenser lens to go next the lantern slide which shall be of approximately the same focus as the projection objective, then the light from the condenser will cross at the center of the objective (fig. 1-2). 8. Do not try to insert carbons when the current is on. Open the switch. 9-10. After the parts of the lantern are once centered, never change the position of the condenser or objective for centering. ii. Do not fail to keep the light centered by the use of the fine adjustments on the lamp and by keeping the carbons in the correct relative position. 12. Do not try to use the lantern when the arc lamp and condenser are too near together or too far apart. The same for the condenser and objective. 13. Do not try to use an objective with a condenser that does not cross its rays at the center of the objective. .Objective and condenser should have the same focal length approximately.