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 #:
000356
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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March, 1930] WATER COOLING OF INCANDESCENT LAMPS 339 72 70 66 66 64 62 60 56 56 54 52 50 48 46 44 42 40 4 78 77 76 75 74 73 7Z 71 O70 I.HR. \ 1 * 4*2 O.D. WATER CELL ^COIL 1295Q.IN. AUQUST 28, 1929. 0 «N» 1 I 1 5 a ? II \\ \ \ \ \ :t % J L \ I \ & ^^g * 0 -o % • -( — ' -a^ -"•^ > 1 \ S \j y^ ^ ^^ **** •a ^ ^ ^> ^^ ^ % = l R 1 6.TE. < \ >F ri ' — o OW ( !—• ii . C PE • —. * Ml **• — N. — -^ *-«*. *• — — — -— — . — e aoo so* TOO 300 uoo 1300 iwo noo isoo zioo z*oo esoo zroo 2900 3100 3300 350 QAL . PH« HR. ZO G At PER HR. 46 QAU.PEf TEMR H20 16'C. FIG. 5. Kffects of rate of water flow on cell temperature and on ratio of energy dissipation to energy input. TABLE III Results of Experiments on the Absorption of Heat Light Source 1500 watt special 1500 watt " 1500 watt " Absorbing Cell None 2.2 cm. H2O; lamp inH2O 2.2 cm. E^O; lamp inH2O Light Transmitted 100% 93 (H.C.P.) 95 (S.C.P.) Per Cent Watts Dissipated in Circulating Water 75% 75% Radiant Energy for Constant Light ' 100% 27% 26%