Amateur movie making (1928)

Record Details:

Title:
Amateur movie making
Date:
1928
Publisher:
New York : Falk Publishing Company, Inc.
Volume:
Amateur movie making
Leaf #:
000144
Language:
English
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Niles Essanay Silent Film Museum
Coordinator:
Media History Digital Library
Description:
Date Added:
November 02, 2023
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130 AMATEUR MOVIE MAKING of white paper, we will see one of the spectral colors as a spot, and around this in concentric circles, the other colors in their proper relation. As we change the distance between the screen and the circular prism, the different colors will occupy the central position in turn. Mechanism of Image Formation. We have a surface XY in which three points are located (D, B and F). From each of these points a ray passes through the lens and is brought to a focus upon the film MN. Figure 1 shows the path of ray AB, Figure 2 shows ray CD and Figure 3 shows the path of ray EF. Figure 4 shows all three rays combined. We may assume that every other point in the surface XY is likewise reproduced in the plane MN. As the axial rays of these ray bundles follow a straight path passing through the center of the lens it follows that the image in plane MN will be inverted in relation to the position of the original in plane XV. Lens. — This circular prism is the most primitive of all lenses. If we grind down the apices of the cones and give both surfaces of the prism a spherical shape, we shall have the simple double convex lens, which we know as the "reading" or "burning" glass. This lens exhibits to a certain degree, the characteristics of a photographic objective or lens, but it exhibits so many faults that it is practically worthless for this work. We will