Abstract
IN a paper published by J. Kaplan in the Proc. Nat. Acad. of Science (14, 258; 1928) there are described some experiments on the afterglow accompanying the passage of an electric discharge through air at about 5 mm. pressure. A point of interest is the observation of a blue glow when a condensed discharge with spark gap was employed, but a yellowish-green glow when the spark gap was not in operation. In this connexion I wish to mention a phenomenon which I observed some time ago, in the course of some experiments dealing with the afterglow in mixtures of nitrogen and oxygen.
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LEWIS, B. The Afterglow in Mixtures of Nitrogen and Oxygen. Nature 122, 241 (1928). https://doi.org/10.1038/122241b0
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DOI: https://doi.org/10.1038/122241b0
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