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Transactions of the Society of Motion Picture Engineers ( Volume: 13, Issue: 38, May 1929)
[ACTIVE]

Bulb Cleanser for Incandescent Lamps

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
The history of incandescent lighting has been characterized by a succession of advances in the efficiency of light production. Through various steps in development from the early carbon lamps to the gas-filled MAZDA types of today, efficiency increases have come one after another. There have been major improvements in filament materials as when tantalum and tungsten were introduced, and minor changes which produced less spectacular increases. Neglecting the lower cost of electrical energy, and taking all sizes of lamps into consideration, the public receives over ten times as much light for the same power as it did when incandescent lighting was first introduced. The highest wattage lamps regularly used today give seventeen times as much light per watt as did the early carbon lamps. Electrical energy costs much less today than in past decades and lamp prices are but a fraction of what they once were. The effect of all these factors is that on the average, electric lighting costs but one-sixteenth as much as in 1890, and for the largest lamp the cost is only one-nineteenth.
Publication Date
1929-05-01
DOI
10.5594/J13106
Link
https://doi.org/10.5594/J13106
Author(s)
D. K. Wright, C. E. Egeler
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D. K. Wright and C. E. Egeler; Bulb Cleanser for Incandescent Lamps, Transactions of the Society of Motion Picture Engineers ( Volume: 13, Issue: 38, May 1929); SMPTE, 1929. Available at https://doi.org/10.5594/J13106
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D. K. Wright and C. E. Egeler; Bulb Cleanser for Incandescent Lamps, Transactions of the Society of Motion Picture Engineers ( Volume: 13, Issue: 38, May 1929); SMPTE, 1929. Available at https://doi.org/10.5594/J13106

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D. K. Wright and C. E. Egeler; Bulb Cleanser for Incandescent Lamps, Transactions of the Society of Motion Picture Engineers ( Volume: 13, Issue: 38, May 1929); SMPTE, 1929. Available at https://doi.org/10.5594/J13106
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<span class="citation">D. K. Wright and C. E. Egeler; <cite>Bulb Cleanser for Incandescent Lamps</cite>, Transactions of the Society of Motion Picture Engineers ( Volume: 13, Issue: 38, May 1929); SMPTE, 1929. Available at <a href="https://doi.org/10.5594/J13106" target="_blank" rel="noopener">https://doi.org/10.5594/J13106</a></span>

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D. K. Wright and C. E. Egeler; Bulb Cleanser for Incandescent Lamps, Transactions of the Society of Motion Picture Engineers ( Volume: 13, Issue: 38, May 1929); SMPTE, 1929
doi: 10.5594/J13106
url: https://doi.org/10.5594/J13106
Snippet:
<li>
D. K. Wright and C. E. Egeler; <cite id="bib-10-5594-j13106">Bulb Cleanser for Incandescent Lamps</cite>, Transactions of the Society of Motion Picture Engineers ( Volume: 13, Issue: 38, May 1929); SMPTE, 1929
<span class="doi">10.5594/J13106</span>
</li>