Nation projector carbons (1935)

Record Details:

Title:
Nation projector carbons
Date:
1935
Publisher:
Toronto : Canadian National Carbon Company Ltd.
Volume:
Nation projector carbons
Leaf #:
00030
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:
May 30, 2024
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Nal ional Projector ( larbone of the high intensity arc has been extended to arcs of lower power demand which bridge the wide gap between the low intensity D.C. arc and the high intensity D.C. arcs previously available. These later high intensity arcs use smaller diameter, copper coated carbons, can be operated in lamps of simpler construction, and have been adapted to A.C. as well as D.C. operation. The A.C. high intensity arc is discussed in detail in Chapter IX, and the Suprex type D.C. high intensity arc is described in Chapter X. An interesting comparison is afforded by the following table which shows the intrinsic brilliancy of a number of well-known light sources. TABLE I Intrinsic Brilliancy of Light Sources Candle Light Soura Power Per Sq. MM. Sour Tungsten Filament of Incan descent Lamps International 40 Watt, clear bulb, vacu 2.06 Critical Tables um type 900 Watt, clear bulb, gas 26.6 Critical Tables filled special Magnetite Arc Stream 6.2 Mott Flame Arc Stream 8 Mott Positive Crater of Cored, 1 5517") Journal of Society D.C. Low Intensity Car of M. P. Engineers bon Arc ('rater of A.C. High Inten 280 Journal of Society sity Carbon Arc of M. P. Engine Positive Crater of Non-Ro 380 Journal of Society tating, D.C. High Inten of M. P. Engine sity Carbon Arc Positive Crater of Rotating. 100-800 Journal of Society D.C. High Intensity. of M. P. Enginei White Flame Carbon Arc Sun at Zenith 920-<>:>o 26