Arnold Sommerfeld

Arnold Sommerfeld (December 5, 1868 - April 26, 1951) was a German physicist
who introduced the fine-structure constant in 1919.

Arnold Sommerfeld was born in Kšnigsberg, where he also studied mathematics.
After receiving doctorate in 1891 he changed to the University of Gšttingen,
where he received professorship in 1896. 1897 he became professor of
mathematics at the University of Clausthal-Zellerfeld, in 1900 for technical
engineering at the University of Aachen.

In 1906 he finally became professor of physics at the University of Munich.
There he came in contact with the special theory of relativity by Albert
Einstein, which was not yet widely accepted at that time. His mathematical
contributions to the theory helped its accepting amoung the sceptic
physicists. Later he became one of the founders of the quantum mechanics,
many of his students became famous of their own - most notably Werner
Heisenberg and Wolfgang Pauli.

Sommerfeld died in 1951 in Munich from injuries after a traffic accident.

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