Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

Title:
Journal of the Society of Motion Picture Engineers
Date:
1930-1949
Publisher:
New York, N.Y. : The Society
Volume:
Journal of the Society of Motion Picture Engineers
Leaf #:
000422
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
The Journal of the Society of Motion Picture Engineers (SMPE)Êdocuments the technological progress of the film industry, highlighting technical developments in production and exhibition. Of special interest are articles about special effects, theater practices, lighting, and the introduction of the 16mm format. Initially titled "Transactions of the Journal of the Society of Motion Picture Engineers."Digitized by the Prelinger Library and the Library of Congress Motion Picture, Broadcasting and Recorded Sound Division.
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.

RADIATION CHARACTERISTICS 405 points of interest in the following data on the radiation of two mercury arcs that cover the range of radiation over the three regions mentioned. It is no part of the purpose of this paper to present these lamps as cures for any disease. The purpose is to present data showing that these lamps will help maintain our good health, leaving the cure of disease where it rightly belongs, in the competent hands of the physician. NATURAL LIGHT It is rather a sad commentary on the state of present day science 1/0 /00 90 80 70 60 SO 3O ^o JO 3 V/SlBl+E /OOO 3000 5000 700O 9OOO //OOO /3OOO S5OOO O ZOOO 4000 6000 BOOO /OOOO /ZOOO /4OOO FIG. 1. Sunlight at sea level. to adniit that we have but little precise knowledge of the composition of the very sunlight that seems to be the foundation stone upon which all visible life forms are built. Besides being cheap, and therefore uninteresting, it is extremely difficult to measure, but progress is being made and we can hope for much more definite data in the immediate future. The temperature of the sun is high enough to furnish generous quantities of energy in the therapeutic region between 2800 A. and 3200 A. but the earth's atmosphere absorbs all radiation shorter than 2900 A. and weakens the longer wavelengths so that the physical measurement of their strength is a matter of some difficulty.