Bertram Borden Boltwood was an American pioneer of radiochemistry who became a professor at Yale University and in 1910 was appointed chair of the first academic department of radiochemistry. He established that lead was the final decay product of uranium, noted that the lead-uranium ratio was greater in older rocks, and in 1907, acting on a suggestion from Ernest Rutherford, became the first to measure the age of rocks from the decay of uranium to lead, obtaining results of 400 to 2200 million years. His work on the uranium decay series also led to his discovery of a new element he named ionium, later shown to be an isotope of thorium.
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Source Wikidata: Bertram Boltwood
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1. Bertram Boltwood - Wikipedia
Infobox, birth_date
July 27, 1870
Lead sentence, birth date span
July 27, 1870
Infobox, death_date
August 15, 1927
Lead sentence, death date span
August 15, 1927
Infobox, birth_place
Amherst, Massachusetts
Infobox, death_place
Hancock, Maine
Lead sentence, nationality
American pioneer of radiochemistry
View the SourceWikidata: Bertram Boltwood
Wikidata Q828438, class allow-list match (w-wdresolver-0926)View the Source Bertram Boltwood (Wikidata)
Wikidata item aliases (en) [1]
also known as Bertram Borden Boltwood
P27 (country of citizenship) [1]
citizen of United States
P19 (place of birth) [1]
born in Amherst
P20 (place of death) [1]
died in Hancock
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