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 #:
000197
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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182 PROJECTION OF IMAGES OF OPAQUE OBJECTS [Cn. VII FIG. 98. THE NEW REFLECTING LANTERN OF WILLIAMS BROWN & EARLE (No. 3 BR 15). (Cut loaned by Williams Brown & Earle). This is a combination projector for lantern slides and for opaque objects. Commencing at the right: N Arc lamp in the lamp-house with the feeding screws extending beyond the lamp-house. M Lamp-house of metal with the ventilator at the top. C First element of the condenser for giving approximately parallel rays. D The opaque object in position. The light from the lamp shines directly upon it and is reflected outward toward the projection objective (£). E Projection objective for opaque objects. F Mirror for reflecting the image of the opaque object to the screen and for correcting the right to left inversion. B Water-cell and second element of the condenser for transparency projection. A Opening for the lantern-slide carrier. L Projection objective for lantern slides. For lantern-slide projection a mirror at C is brought into position to reflect the light out along the optic axis of B and L. objective must be used for such a screen distance. (For a magnification of six and a 15 meter screen distance, an objective of 250 cm. (100 inches) is necessary). § 289. Arc lamp and amount of current. — If one wishes to use more than 25 amperes, the arc lamp should be hand-feed. Up to 25 amperes, the right-angled carbons work well. Beyond that amount the inclined or vertical carbons are more satisfactory for