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 #:
000108
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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CH. Ill] MAGIC LANTERN WITH NERNST LIGHT 93 WI W2 FIG. 54. NERNST LAMP FOR THE MAGIC LANTERN (REICHERT). This is on a support and has a rack and pinion for raising and lowering the lamp. It is automatic. Gl The three filaments or glowers with this lamp. S 3^ The two supply wires from the house circuit. Tt Pinion and milled head of the rack work. WIt W2, W3 The three ballast tubes. § 142. Centering and distance from the condenser with the Nernst lamp. — The lamp must be centered with the condenser and objective as described in Ch. I (§ 51+). It must have some form of support with means of raising and lowering the lamp. The distance of the lamp from the condenser which gives the best illumination can be determined as follows: Light the lamp, put a good lantern slide in the lantern, then move the lamp up toward the condenser, shifting it back and forth until the best screen image is produced. In general, it will be found that this results when the glower is at about the principal focal distance from the condenser. When the best position is found the place should be clearly marked, then the lamp can be put in this position quickly at any time. § 143. Connecting the lamp with the house circuit ; alternating current. — This is done by means of a flexible conductor connected