Bertram Boltwood
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| Bertram Boltwood | |
 Bertram Boltwood
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| Born | July 27, 1870 Amherst, Massachusetts |
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| Died | 1927 Hancock Point, Maine) |
| Nationality | United States |
| Alma mater | Yale University |
| Known for | radiochemistry |
Bertram Borden Boltwood (July 27, 1870 Amherst, Massachusetts - 1927, Hancock Point, Maine) was an American pioneer of radiochemistry.
He was a graduate of Yale University, and taught there 1897-1900. He measured the age of rocks by the decay of uranium to lead, in 1907. He got results of ages of 400 to 2200 million years, the first success of radiometric dating. More recently, older mineral deposits have been dated to about 4.4 billion years old, close to the best estimate of the age of earth.
Boltwoodite is named after him.
[edit] References
- Boltwood, Bertram (1907) "The Ultimate Disintegration Products of the Radio-active Elements. Part II. The disintegration products of uranium." in American Journal of Science series 4, volume 23, pages 77-88.
[edit] External links
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