Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine, fully illustrated with plates and with over 400 text-figures (1914)

Record Details:

Title:
Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine, fully illustrated with plates and with over 400 text-figures
Date:
1914
Author:
Gage, Simon Henry, 1851-1946
Publisher:
Ithaca, N.Y. : Comstock Publishing Co.
Volume:
Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine, fully illustrated with plates and with over 400 text-figures
Leaf #:
000249
Language:
English
Format:
Books
Contributor:
Gerstein - University of Toronto
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.

234 PROJECTION WITH SUBSTAGE CONDENSER [Cn. IX FIG. 131. FILAR MICROMETER OCULAR. (Cut loaned by the Bausch & Lomb Optical Co.}. This filar micrometer ocular is of the Ramsden type and consists of a positiveocular with a movable hair line and two reference lines at right angles to each other as shown in A. The movable line must be carried over the entire length of the object to be measured by rotating the drum. A Field of the filar micrometer showing the movable and the cross lines, and the comb. The teeth serve to measure the total revolutions of the'drum. FIG. 132. ILLUMINATING OBJECTS OF VARIOUS SIZES ix MICRO-PROJEC TION WITH THE MAIN CoNDEXSER OxLY. The object must be put in the cone of light at a point where it will be fully illuminated. For high powers it will be at or very near the focus (/). For larger objects and low powers the object is at 2 or j, or even closer to the condenser face. Arc Supply The right-angled carbons of the arc lamp. L1 L2 The first and second elements of the triple condenser. WaterCell The water-cell for absorbing radiant heat. It is in the parallel beam between the first and second elements of the condenser. Axis The principal optic axis on which all the parts are centered. If only the main condenser is used (fig. 121), the cone of light from the condenser must be sufficient to fill the aperture of the projection objective. This requires that the second clement of the