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 #:
000354
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. X] DRAWING WITH HOUSE CURRENT 339 PROJECTION DRAWING APPARATUS WITH THE RADIANT CONNECTED WITH THE HOUSE LIGHTING SYSTEM. § 486. General Statement. — As shown in Chapter III (fig. 41-43), the arc lamps using small, cored carbons (6 to 8 mm. in diameter) and drawing from three to six amperes may be connected with any socket for an incandescent bulb of the house lighting system. The light so obtained is more powerful than the usual lime light. The carbons being small, the light approaches closely to the ideal point source. Consequently for all projection purposes, including drawing, this form of arc light is of the greatest importance and utility. Of course, for projection in a large hall it is insufficient, but for the relatively small screen pictures needed in drawing and for small classes, the results are very satisfactory. § 487. Wiring, rheostat and connections for the arc lamp attached to the house lighting system. — This is shown in fig. 188189 and described in § 128-135. Remember and practice the advice given about turning the current on and off (§ 133), and the possibility of short circuiting and burning out the incandescent bulb socket. Never use an arc lamp without a suitable rheostat or inductor. (See § 129, also § i28a for fuses on the house system). Lamp Socket FlG. 1 88. WIRING AND CONNECTIONS OF THE ARC LAMP USED ON THE HOUSE LIGHTING SYSTEM (See fig. 45).