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 #:
000403
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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388 DO AND DO NOT IN DRAWING [CH. X liable to cause confusion. If the mirror is silvered on the face or if a prism is used there will be no doubling of the reflected image. (8) Inverted images. One must follow carefully the directions or there is liable to be an inversion of the projected image (§ 512526). (9) In printing and photographing with projection apparatus the difficulties likely to be met with in photography are sure to come in. Knowledge of the principles underlying photographic processes will help one to overcome the troubles. 549. Summary of Chapter X: Do i. Have a suitable room or a suitable shield around the drawing to keep out stray light (§ 453-455) Do NOT i. Do not try to draw with the drawing surface flooded with stray light. Only the light from the specimen should reach the drawing surface. 2. Draw in the evening if a proper room is not available in the day time (§ 453). 3. Use an arc lamp for light if possible (§ 461-462, 486-487). 4. Always use a rheostat with an arc lamp, large or small (§487,ng. 182, 185). 5. One can draw images projected by all forms of projection apparatus (§452). 2. Do not forget that it is dark in all rooms in the evening and, therefore, that is a good time to draw. 3. Do not use a weak light for drawing if you can have an arc light. 4. Never try to use an arc lamp, large or small, without a rheostat in series with it. 5. Do not forget that it is possible to draw the images projected by any form of apparatus.