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mercury-arc lamp
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mercury-arc lamp

lamp

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development of electric discharge lamps

  • desk lamp
    In lamp: Electric discharge lamps

    …Peter Cooper Hewitt marketed the mercury-arc lamp in 1901, the energy efficiency of which proved to be two or three times that of the contemporary incandescent lamp. Creating a nearly shadow-free light and less glare, the lamp immediately found wide use for industrial and street lighting in the United States.

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use in infrared spectroscopy