Abstract
IN a recent number of the Comptes rendus of the Paris Academy (March 25) an account appeared by MM. P. Curie and A. Debierne of the production of a radio-active gas from radium. In their experiments some radium was placed in a glass vessel and the air exhausted by means of a mercury pump. It was found that the vacuum steadily decreased, due to the giving off of a gaseous substance from the radium. A small amount of the gas thus collected was found to be strongly radio.active. It caused phosphorescence in the glass tubes over which it passed, and in course of time blackened them. Substances exposed in the gas became themselves temporarily radio-active.
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RUTHERFORD, E. Emanations from Radio-active Substances. Nature 64, 157–158 (1901). https://doi.org/10.1038/064157a0
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DOI: https://doi.org/10.1038/064157a0
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