The Measurement of Ultra-Violet Quanta by Fluorescence Photometry

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Abstract
The relative intensities of monochromatic ultra-violet light determined through-out the ultra-violet mercury spectrum by the use of a fluorescence photometer employing widely different chemical substances were shown to check the intensities of the light given by the thermopile. The agreement between the photometric and thermopile measurements indicates that both methods may be employed for measuring accurately the energy in the ultra-violet region.

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