Abstract
IN their communication to the Royal Society of April 28, Sir William Ramsay and Mr. Soddy by direct measurements determine the rate of decay of radium as one thousandth of the mass per annum, giving as the average life of the radium atom about one thousand years.
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JOLY, J. The Life-history of Radium. Nature 70, 30 (1904). https://doi.org/10.1038/070030b0
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DOI: https://doi.org/10.1038/070030b0
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