A condensed course in motion picture photography ([1920])

Record Details:

Title:
A condensed course in motion picture photography
Date:
[1920]
Author:
New York Institute of Photography
Publisher:
New York, New York Inst. of Photography
Volume:
A condensed course in motion picture photography
Leaf #:
00044
Language:
English
Format:
Books
Contributor:
Gerstein - University of Toronto
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
14
Date Added:
July 19, 2022
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THE NATURE OF LIGHT body, that is, an)rthing g^iving forth light, sends forth the light in all directions from itself, just as a pebble dropped on the surface of quiet water sends out ripples which leave the place where the pebble dropped in ever-widening circles. Do not become confused by the idea of the circle. Remember that any point on the crest of any of these ripples or waves has come FijT. s. This diagram roughly illustrates how a luminous point S radiates light outwardly in every direction like the radii of a sphere, in this case the figure represents a cross-section of such a sphere. outward from the pebble in a straight line. In a similar way, light waves move ouit in straight lines from their point of origin, not only in one plane, as the ripples do from the surface of the water, but in every direction. (Fig. 3.) 29