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 #:
000143
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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128 MAGIC LANTERN WITH ACETYLENE LAMP [CH. V opaque sources, such as the incandescent mantle light or the petroleum flame, a mirror placed behind the light does not increase the brilliancy so much. § 211. Position of the acetylene lamp. — This should be so that the middle point of the flame is on the axis (fig. 64) and it should be at a distance from the condenser of about the principal focal length of the first element of the condenser and the middle flame of the burner. For the best position in practice one must experiment while looking at the screen image or disc of light, and arrange the lamp to give the best effect (§ 17, 55). B FIG. 71. UPPER AND LOWER ENDS OF A PRESTOLITE TANK USED \VITH THE MAGIC LANTERN. FIG. 7iA. UPPER END OF THE PRESTOLITE TANK. V Outlet valve. It is opened and closed by a special wrench. Connector The metal connector for joining the gas supply and the acetylene burner. Rt Rubber or flexible metal tube extending from the connector to the burner. N Nut for holding the conical part of the connector in gas-tight union with the hollow cone of the tank-valve. This valve must be set gas-tight before opening the outlet valve (V). FIG. 71 B. LOWER END OF THE PRESTOLITE TANK SHOWING THE PRESSURE GAUGE. P G Pressure gauge indicating the pressure of the gas within the tank. The pressure is given in atmospheres or in pounds per square inch or in both.