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 #:
000294
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
Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.

Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.

CH. TXi HIGH POWER MICRO-PROJECTION 279 FIG. 155. THE EFFECT OF USING AN IRIS DIAPHRAGM IN THE CONE OF LIGHT FROM THE MAIN CONDENSER. . The second element of the condenser is shown at the top. The focus'of J;he cone of light from the condenser is shown at F, the axis by A. B At the right are shown in millimeters, three diameters of the cone of light with three different openings of the iris diaphragm (22, 33, 44 mm.) C At the left are shown the apertures corresponding with these openings in the iris diaphragm (23°, 34°, 45°). The aperture of these openings is also shown above the circles. One can see by this diagram what an enormous amount of light is lost by making the illuminating cone smaller.