Abstract
MAY I add a few observations on this phenomenon to those recorded by Messrs. Chapman and Davies in their letter to NATURE of March 1? From time to time during the last four years or so, after running silica discharge tubes containing helium, I have noticed a fairly bright and very persistent greenish phosphorescence. Supposing that this effect must be well known, at least to those using silica discharge tubes, I made no special experiments at the time in connexion with it, but the following recent observations suggested by the above letter may be of some interest.
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CURTIS, W. The Phosphorescence of Fused Transparent Silica. Nature 113, 495 (1924). https://doi.org/10.1038/113495a0
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DOI: https://doi.org/10.1038/113495a0
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