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 #:
000141
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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126 MAGIC LANTERN WITH MANTLE GAS LAMP [CH. V FIG. 68. UPRIGHT GAS BURNER WITH WELSBACH MANTLE AND CONCAVE REFLECTOR FOR THE MAGIC LANTERN. (From Max Kohl, A. G., Price List No. 50, Vol. I). The distance from the condenser giving the best light must be determined by experiment, as with other extended sources. But, in general, it will be found to be at about the principal focal distance from the first element of the condenser, as with the arc lamp, but closer for the two-lens than for the three-lens condenser § (55). § 205. Reflector.— As with the petroleum light, a concave reflector is sometimes used behind the mantle to reflect back to the mantle and thence to the condenser the light which passes backward from the mantle. This is not always used, but it would increase the light somewhat (§ 210). § 206. Connecting the gas supply with the lamp. — Use for this a perfect rubber tube or one of the flexible metallic tubes (fig. 60), and secure the FIG. 69. INVERTED GAS BIRNER WITH WELSBACH MANTLE FOR THE MAGIC LANTERN. (From Schmidt und llamch'a Catalogue, A'o. IV, Projektions — Apparte,