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Radium May Prolong the Sun's Life Indefinitely; Mary Proctor Explains the Theories Regarding the Maintenance of the Sun's Heat -- If Composed in Part of Radium It Will Warm the Earth for at Least ...
REFERRING to Mr. Hardy's experiment described in his letter in NATURE, October 8, it is easy to show that whatever the intensity of radio-activity might be at the surface of the sun, by mere ...
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