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Willard Libby
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Willard Libby

Willard Frank Libby (December 17, 1908 - September 8, 1980) was an American chemist, famous for his role in the development of radiocarbon dating, a process which revolutionised archaeology.

Libby was born in Grand Valley, Colorado. He received his B.S. (1931) and Ph.D. (1933) degrees from the University of California, Berkeley, where he then became a lecturer and later assistant professor. Libby spent the 1930s building sensitive geiger counters to measure weak natural and artificial radioactivity.

Awarded a Guggenheim Fellowship, he spent most of 1941 at Princeton University. After the start of World War II he worked on the Manhattan Project at Columbia University with Nobel laureate Harold Urey. Libby was responsible for the gaseous diffusion separation and enrichment of Uranium-235 which was used in the atomic bomb on Hiroshima.

In 1945 he became a professor at the University of Chicago. In 1954, he was appointed to the U.S. Atomic Energy Commission. In 1959, he became Professor of Chemistry at University of California, Berkeley, a position he held until his retirement in 1976. He taught honors freshman chemistry from 1959-1963 (a University tradition that senior faculty teach this class). He was Director of the University of California statewide Institute of Geophysics and Planetary Physics (IGPP) for many years including the lunar landing time. He also started the first Environmental Engineering program at UCLA in 1972.

In 1960, Libby was awarded the Nobel Prize in Chemistry for leading the team (namely, post-doc James Arnold and graduate student Ernie Anderson, with a $5,000 grant) that developed Carbon-14 dating.