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Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 3, March 1940)
[ACTIVE]

Large Size Non-Rotating High-Intensity Carbons and their Application to Motion Picture Projection

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
The high-intensity, direct-current arc between small, copper-coated carbons operated in coaxial alignment without rotation with a reflector optical system has achieved a widespread and growing popularity over the past few years for theatrical projection of motion pictures. This type of light-source has now been extended to include larger carbons and higher currents. These larger carbons of this type with the proper optical system will give substantially higher light on the motion picture screen. Fundamental facts about the arc behavior and the conditions necessary to obtain stable and steady operation with these larger carbons are described. The correlation of the luminous characteristics of the arc with the optical system is reviewed. The performance of a new arc with a suitable optical system is given from the standpoint of offering possibilities for projection. Carbon consumption rates, arc current and voltage, and light on the screen are discussed.
Publication Date
1940-03-01
DOI
10.5594/J10092
Link
https://doi.org/10.5594/J10092
Author(s)
D. B. Joy, W. W. Lozier, R. W. Simon
Source Data (JSON)

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D. B. Joy, W. W. Lozier, and R. W. Simon; Large Size Non-Rotating High-Intensity Carbons and their Application to Motion Picture Projection, Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 3, March 1940); SMPTE, 1940. Available at https://doi.org/10.5594/J10092
Snippet:
D. B. Joy, W. W. Lozier, and R. W. Simon; Large Size Non-Rotating High-Intensity Carbons and their Application to Motion Picture Projection, Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 3, March 1940); SMPTE, 1940. Available at https://doi.org/10.5594/J10092

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D. B. Joy, W. W. Lozier, and R. W. Simon; Large Size Non-Rotating High-Intensity Carbons and their Application to Motion Picture Projection, Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 3, March 1940); SMPTE, 1940. Available at https://doi.org/10.5594/J10092
Snippet:
<span class="citation">D. B. Joy, W. W. Lozier, and R. W. Simon; <cite>Large Size Non-Rotating High-Intensity Carbons and their Application to Motion Picture Projection</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 3, March 1940); SMPTE, 1940. Available at <a href="https://doi.org/10.5594/J10092" target="_blank" rel="noopener">https://doi.org/10.5594/J10092</a></span>

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D. B. Joy, W. W. Lozier, and R. W. Simon; Large Size Non-Rotating High-Intensity Carbons and their Application to Motion Picture Projection, Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 3, March 1940); SMPTE, 1940
doi: 10.5594/J10092
url: https://doi.org/10.5594/J10092
Snippet:
<li>
D. B. Joy, W. W. Lozier, and R. W. Simon; <cite id="bib-10-5594-j10092">Large Size Non-Rotating High-Intensity Carbons and their Application to Motion Picture Projection</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 3, March 1940); SMPTE, 1940
<span class="doi">10.5594/J10092</span>
</li>