mercury-arc lamp

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mercury-arc lamp

lamp

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development of electric discharge lamps

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

In spectroscopy: Infrared instrumentation
Radiation from a mercury-arc lamp (10–70 cm⁻¹) is employed in the far-infrared region. In a grating-monochromator type instrument, the full range of the source-detector combination is scanned by mechanically changing the grating position. In a Fourier-transform instrument, the range available for a single scan is generally limited by…
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