Abstract
THE production of radium from uranium has now been observed experimentally; the rate of production is not, however, in accordance with the quantitative theory. Mr. Soddy's observations (Phil. Mag., June, 1905) gave a rate of production of only one-thousandth of the theoretical amount. An experiment which I made on a specimen of uranium salt, known to be at least thirty years old, has confirmed Mr. Soddy's conclusion so far as to show that the mean rate of production of radium could not have exceeded a hundredth part of the theoretical amount. It may, of course, have been much less, since the amount of radium initially present is unknown.
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STRUTT, R. The Rate of Formation of Radium. Nature 72, 365 (1905). https://doi.org/10.1038/072365a0
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DOI: https://doi.org/10.1038/072365a0
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