biography
| name: |
Boltwood, Bertram (Borden)
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| sex:
| male
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| lived:
| (1870–1927)
|
| biography:
| Radiochemist, born in Amherst, Massachusetts, USA. He studied at Yale, Munich, and Leipzig, became professor at Yale (1897–1900, 1910–27), and from 1904 concentrated on research into radiochemistry, becoming the leading US figure in this field. He discovered the radioactive element ionium, and introduced lead:uranium ratios as a method for dating rocks (1907). |
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