Abstract
THE spiral forms of the high frequency electrodeless discharges observed in organic vapours by Ghosh and Chatterjee (NATURE, Oct. 26, 1929), and in iodine vapour by MacKinnon and Robertson (NATURE, July 13, 1929), appear to be very similar to the forms of discharge observed by us under certain conditions in argon which was very slightly impure. A very brief account was given by W. T. Perry (Note: B.Sc. Thesis, Oxford, 1928), but as this account is somewhat inaccessible, it may be of interest to describe some of the properties of these discharges. Recently, P. Johnson has observed the same type of discharge under similar conditions in neon.
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MCCALLUM, S., PERRY, W. Spiral Forms in Gas Discharges. Nature 124, 984–985 (1929). https://doi.org/10.1038/124984a0
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DOI: https://doi.org/10.1038/124984a0
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