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Nobel Prizes and Laureates

Nobel Prizes and Laureates

The Nobel Prize in Chemistry 1960
Willard F. Libby

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Willard F. Libby - Facts

Willard Frank Libby

Willard Frank Libby

Born: 17 December 1908, Grand Valley, CO, USA

Died: 8 September 1980, Los Angeles, CA, USA

Affiliation at the time of the award: University of California, Los Angeles, CA, USA

Prize motivation: "for his method to use carbon-14 for age determination in archaeology, geology, geophysics, and other branches of science"

Field: nuclear chemistry

Prize share: 1/1

Work

Carbon is a fundamental component in all living material. In nature there are two variants, or isotopes: carbon-12, which is stable, and carbon-14, which is radioactive. Carbon-14 forms in the atmosphere when acted upon by the sun's ultraviolet light and then deteriorates. When an organism dies and the supply of carbon from the atmosphere ceases, the content of carbon-14 declines through radioactive decay at a fixed rate. In 1949 Willard Libby developed a method for applying this to determine the age of fossils and archeological relics.

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