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

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 #:
000345
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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330 DRAWING WITH THE MAGIC LANTERN [Cn. X The size of the drawing can be varied without moving the lantern or the drawing surface by using an objective of longer focus for a smaller diagram, or of a shorter focus for a larger diagram (see also § 507). § 466. Use of the magic lantern for small drawings. — It frequently happens that a small drawing of some large object is needed for publication. This may be some natural object or a piece of apparatus. The object or piece of apparatus is placed in a good light and a small negative made on a lantern-slide plate, being careful not to make the negative too dense. After this is dry, it can be put into the lantern-slide carrier and projected upon the drawing paper, and the outlines accurately traced. Then with a pen and India ink one can ink in the lines and add any necessary shading free-hand, having the object or piece of apparatus in view so that it can be accurately done. The exact magnification or Condenser KS FIG. 185. SIMPLEST FORM OF MAGIC LANTERN WITH ARC LIGHT FOR USE IN DRAWING. SW Supply wires. So K Socket with its key switch. 5 P Separable attachment plug. LW Wires extending from the cap of the plug to the knife switch. KS Knife switch for turning the current on and off. Rheostat The balancing device for regulating the current. Arc Lamp The arc lamp with right-angled carbons. Condenser The two-lens condenser with the first (i) and the second (2) elements. LS Position of the lantern slide or other large object. Objective with c, its center. Axis Axis The principal optic axis of the condenser and the objective. The radiant must be centered on this axis. Image Screen The drawing surface on which the image is projected.