Richardson's handbook of projection (1927)

Record Details:

Title:
Richardson's handbook of projection
Date:
1927
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
00017
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
August 01, 2024
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.

MANAGERS AND PROJECTIONISTS What are the inherent reflection losses in the reflector? 822 Compare the light angles utilized by various mirrors. 822 Does spherical aberration increase in short focal length mirrors as compared with those of longer focal length ? 822 Is the central six inches of the diameter of all mirrors used with reflector arc lamps spherical? 822 For what is a parabolic and for what is an eliptical mirror best ? 823 What is the possible maximum angle of light a reflector can utilize ? 824 What types of mirror are used in reflector arc lamps ? 824 What is a "spherical mirror" ? 824 Why is not the light source placed at the focal point of the miror ? 825 Where is the light source located with respect to the focal point of the mirror, and why is it thus located? 825 What is the practical effect of thus locating the light source when a spherical mirror is used, insofar as has to do with the focusing of the light rays from different sections or zones of the mirror? 825 What is the practical effect of using a spherical mirror insofar as has to do with screen illumination ? 825 How may spherical aberration be reduced in either the condenser or the non-condenser type of lamp? 825 Describe a spherical, an eliptical and a parabolic mirror surface. What is the difference between them? Fig. 314A, page 826 Does the hole in center of mirror cause light loss ? 826 Is it possible that a small mirror can utilize a greater angle of the available light than one of greater diameter ? 827 Is there danger of fire from open front of lamphouse where non-condenser type of lamp is used? 827 Heat of Spot • This is discussed on pages 827 and 828 Abuse of Mirror Is it important that the rated amperage of reflector arc lamps be not exceeded ? 828 Is it important that light source be not less than correct distance from the mirror ? 829 xi