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The Principle of Radium

Abstract

WOULD some of your readers inform me whether the case of the radium phenomena is quite unique? When a small magnet in my drawer has been ready to act on a compass at any time during the last twenty years, and has not altered its appearance in any appreciable way, I ask whence comes the continuous magnetic supply?

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W., S. The Principle of Radium. Nature 68, 496–497 (1903). https://doi.org/10.1038/068496c0

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