Llewellyn Thomas

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Llewellyn Hilleth Thomas

Copenhagen 1926
Born (1903-10-21)21 October 1903
London, United Kingdom
Died 20 April 1992(1992-04-20) (aged 88)
Raleigh, North Carolina, USA
Thesis Contributions to the theory of the motion of electrified particles through matter and some effects of that motion (1927)
Influences Wallace John Eckert

Llewellyn Hilleth Thomas (21 October 1903 – 20 April 1992) was a British physicist and applied mathematician.[1] He is best known for his contributions to atomic physics, in particular:

His name is frequently attached to an efficient Gaussian elimination method for tridiagonal matrices—the Thomas algorithm.

Born in London, he studied at Cambridge University, receiving his BA, PhD, and MA degrees in 1924, 1927 and 1928 respectively. He proposed Thomas Precession in 1926, to explain the difference between predictions made by spin-orbit coupling theory and experimental observations.

In 1929 he obtained a job as a professor of physics at the Ohio State University, where he stayed until 1943. He married Naomi Estelle Frech in 1933. From 1943 until 1945 he worked on ballistics at the Aberdeen Proving Ground in Maryland. In 1946 he became a member of the staff of the Watson Scientific Computing Laboratory at Columbia University, remaining there until 1968. In 1958 he was elected as a member of the National Academy of Sciences. He was appointed visiting professor at North Carolina State University in 1968, retiring from this position in 1976. He died in Raleigh, North Carolina.

References

  1. Price, Peter J. (September 1994). "Obituary: Llewellyn H. Thomas". Physics Today 47 (9): 115–116. doi:10.1063/1.2808649. 
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