The Relation Bitween Life and Impressed Voltage of 100 Volt, 10 Candle Power Incandescent Vacuum Tungsten Lamp.
Journal of the Illuminating Engineering Institute of Japan (Shomei Gakkai Shi) - Japan
doi 10.2150/jieij1917.7.268
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Date
January 1, 1923
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Illuminating Engineering Society of Japan