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

Page scan 000253 from Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine

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 #:
000253
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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238 MICRO-PROJECTION WITH DIRECT CURRENT [Cn. IX FIG. 133. PROJECTION MICROSCOPE WITH AMPLIFIER. This picture shows the projection microscope arranged for use in a lecture room. Commencing at the left : The supply wires to the table switch. A The ammeter to indicate the amount of current. It is along one wire (in series). R The adjustable rheostat. It is along one wire. 10-20 These figures indicate that the rheostat is adjustable; the lowest current allowed to flow being 10 amperes and the highest 20 amperes. The arrow indicates the direction to turn the knob to increase the current. The arc lamp in the lamp-house. This is the three-wire, automatic arc lamp of the Bausch & Lomb Optical Co. The wiring is shown to be: One wire from the negative pole of the switch to the pole for the lower carbon. One wire passes from the positive pole of the switch to the middle binding post of the motor mechanism of the automatic lamp. The current for the motor does not traverse the rheostat. One wire passes from the positive pole of the switch to the ammeter, to the rheostat and from the rheostat to the positive (+) binding screw of the arc lamp.