API Registry JSON CSV exports Resources
Theme

Choose how MSRBot.io looks on this device.

Auto (match system) Light mode Dark mode

Preference is stored in this browser only.

Journal of the Society of Motion Picture Engineers ( Volume: 21, Issue: 2, August 1933)
[ACTIVE]

A New Alternating-Current Projection Arc

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
A new type of arc operated on alternating current is a desirable substitute for the low-intensity, direct-current arc used in the majority of motion picture theaters. This arc is a modification of the well-known white-flame arc, in which the light sources are concentrated at the electrodes by using heavy currents and low arc voltages on specially designed carbons. It is operated at current densities higher than those employed in direct-current arcs, and produces a screen light of a blue-white color similar to that obtained with the direct-current, high-intensity arc. The bluish white screen light is remarkably steady and uniform. The power required to produce a given screen illumination is considerably less than that required with the low-intensity, direct-current arc.
Publication Date
1933-08-01
DOI
10.5594/J02038
Link
https://doi.org/10.5594/J02038
Author(s)
D. B. Joy, A. C. Downes
Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J02038.json

Reference this Doc

Plain text (ISO 690 compliant)

Preview:
D. B. Joy and A. C. Downes; A New Alternating-Current Projection Arc, Journal of the Society of Motion Picture Engineers ( Volume: 21, Issue: 2, August 1933); SMPTE, 1933. Available at https://doi.org/10.5594/J02038
Snippet:
D. B. Joy and A. C. Downes; A New Alternating-Current Projection Arc, Journal of the Society of Motion Picture Engineers ( Volume: 21, Issue: 2, August 1933); SMPTE, 1933. Available at https://doi.org/10.5594/J02038

HTML (ISO 690 compliant)

Preview:
D. B. Joy and A. C. Downes; A New Alternating-Current Projection Arc, Journal of the Society of Motion Picture Engineers ( Volume: 21, Issue: 2, August 1933); SMPTE, 1933. Available at https://doi.org/10.5594/J02038
Snippet:
<span class="citation">D. B. Joy and A. C. Downes; <cite>A New Alternating-Current Projection Arc</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 21, Issue: 2, August 1933); SMPTE, 1933. Available at <a href="https://doi.org/10.5594/J02038" target="_blank" rel="noopener">https://doi.org/10.5594/J02038</a></span>

SMPTE Icon SMPTE's HTML Pub

Preview:
D. B. Joy and A. C. Downes; A New Alternating-Current Projection Arc, Journal of the Society of Motion Picture Engineers ( Volume: 21, Issue: 2, August 1933); SMPTE, 1933
doi: 10.5594/J02038
url: https://doi.org/10.5594/J02038
Snippet:
<li>
D. B. Joy and A. C. Downes; <cite id="bib-10-5594-j02038">A New Alternating-Current Projection Arc</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 21, Issue: 2, August 1933); SMPTE, 1933
<span class="doi">10.5594/J02038</span>
</li>