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 #:
000500
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
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1950 INFRARED WITH ELECTRIC-FLASH 495 observed. At the operating rate of one per second a series of over 2,000 photographs covering a flight test of over 30 min is possible without reloading. In contrast to special recording systems which require a separate bank of test instruments, this device can be readily installed in the cockpit of even the smallest aircraft to record data from the standard instrument panel. However, without the infrared niters it is also adaptable for use in recording much larger aircraft instrument installations located where the flashing light would not distract the pilot. Installation and testing of this infrared recorder in a DC-3 airplane is now being carried on by the CAA. CONCLUSIONS Commercial electric-flash techniques can be used to provide infrared light for infrared photography. Guide numbers at least as large as those for Kodachrome can easily be obtained. The efficiency of electric-flash as an infrared source is generally highest for a tube designed to operate at the lowest practicable voltage. An aircraft instrument recorder, or "cockpit observer," employing electricflash as an infrared source has been designed and shows satisfactory performance in laboratory tests. REFERENCES 1 . W. Clark, Photography by Infrared, 2d ed. , John Wiley & Sons, New York, 1946. (An extensive treatment of infrared photography.) 2. H. E. Edgerton, ' 'Photographic use of electrical discharge flashtubes," J. Opt. Soc. Amer., vol. 36, no. 7, pp. 390-399, July 1946. 3. H. E. Edgerton, "Electrical-flash photography," Jour. SMPE, vol. 52, pp. 8-23, Mar. 1949. 4. K. J. Germeshausen, "New high-speed stroboscope for high-speed motion pictures," Jour. SMPE, vol. 52, pp. 24-34, Mar. 1949. 5. H. E. Edgerton, "Light-meter used with electronic flash," /. Photo. Soc. Amer., Part II, Photographic Science and Technique, pp. 6-10, January 1950. 6. W ratten Light Filters, p. 69, Eastman Kodak Company, Rochester, N.Y., 1945.