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 #:
000101
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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86 ARC LAMPS WITH SMALL CURRENTS [CH. Ill Condenser FIG. 47. THE MAGIC LANTERN WITH A THREE-LENS CONDENSER AND A WATER-CELL FOR USE ON THE HOUSE LIGHTING SYSTEM. This is the same as fig. 46 except that no double-pole knife switch is used, and there is a triple-lens condenser and water-cell in place of a double-lens condenser. It is well also, when one has the lamp properly connected, to turn off the current by opening the separable plug, and then paint the positive wire red where it is inserted into the binding post for the upper carbon. The negative wire can be painted black also. If HUBBEuOf FIG. 48. WALL RECEPTACLES WITH SEPARABLE CAP. (Cuts loaned by II. Ilubbell, Inc.). A Wall receptacle with the connecting prongs polarized so that the cap can be put on only one way, thus avoiding change of polarity with direct current. B Wall receptacle in which the cap can be put in place either way around. Either form can be used with both direct and alternating current.