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|Llewellyn Hilleth Thomas|
31 October 1903|
London, United Kingdom
|Died||20 April 1992
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|
- Thomas precession, a correction to the spin-orbit interaction in quantum mechanics, which takes into account the relativistic time dilation between the electron and the nucleus of an atom.
- The Thomas–Fermi model, a statistical model of the atom subsequently developed by Dirac and Weizsäcker, which later formed the basis of density functional theory.
- Thomas collapse - effect in few-body physics, which corresponds to infinite value of the three body binding energy for zero-range potentials.
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.
- Guide to the Llewellyn Hilleth Thomas Papers at the North Carolina State University
- NA-Digest on the attribution of the Thomas Algorithm's name
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