Abstract
DURING a research which is being carried out in conjunction with my colleague, Prof. Norman Collie, two experiments have been made the results of which are of some interest. Sir James Mackenzie Davidson was so kind as to furnish us with four deeply stained X-ray bulbs, which had been long in use, and had been rejected. These bulbs were broken up, the stained glass was placed in a combustion-tube connected with a Töpler pump, and any adhering air was displaced by frequent washing-out with pure oxygen, admitted for the purpose. The tube was then heated to bright redness; and the gas collected was placed in communication with a small bulb of cooled charcoal, in order to condense out all gases except hydrogen, helium, and neon. The residual gas was run up into a capillary tube, in which its spectrum could be examined. The spectrum was mainly that of helium, but there was a trace of neon.
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RAMSAY, W. Experiments with Kathode Rays. Nature 89, 502 (1912). https://doi.org/10.1038/089502b0
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DOI: https://doi.org/10.1038/089502b0
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