Abstract
IN the course of investigations that have been made at the Electrical Laboratory, Oxford, of the electrical properties of argon, it was found that when the gas is obtained in a high degree of purity several phenomena occur, in the appearance of the discharge and in the spectrum of the light emitted, which do not appear to have been noticed before. The argon was carefully purified by a method which will be described in another paper. It was examined spectroscopically at pressures from 1 millimetre to 150 millimetres and no lines due to impurities were detected in the range of wave-lengths from λ 2000 A. to λ 7000 A.
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References
S. P. McCallum and W. T Perry, NATURE, 124, 984 Dec. 28, 1929.
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McCALLUM, S., KLATZOW, L. & KEYSTON, J. A Continuous Spectrum of Pure Argon. Nature 130, 810–811 (1932). https://doi.org/10.1038/130810c0
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DOI: https://doi.org/10.1038/130810c0
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