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Arnold Johannes Wilhelm Sommerfeld (Königsberg, December 5, 1868 - Munich, April 26, 1951) was a German physicist.
He worked in theoretical physics, in particular in atomic and quantum physics. He is known for his contributions to the Bohr atomic model, for the Wilson-Sommerfeld formula, for the introduction of the fine structure constant in quantum mechanics and of the orbital quantum number. The first theoretical description of tachyons is generally attributed to Sommerfeld.
His students included Werner Heisenberg, Wolfgang Pauli, Peter Debye, Hans Bethe.
Sommerfeld was honored with many important honors, including the Lorentz Medal, the Planck Medal and the Oersted Medal. He also received awards from the Royal Society of London, the National Academy of Sciences in Washington, the Accademia dei Lincei, the Academy of U.R.S.S. and the Indian Academy of Sciences, as well as at the Academies of Berlin, Munich, Vienna, Göttingen, Budapest, Uppsala and Madrid. However, he never achieved the Nobel Prize, despite the undefeated record of 81 nominations.
in 1905 he had done for Einstein's theory of special relativity, Sommerfeld enthusiastically welcomed the new ideas of the Danish physicist, immediately putting to work and encouraging his students to dedicate themselves to it.
In September 1922, he accepted to spend the academic year as a visiting professor at the University of Madison (Wisconsin, USA). In 1927 Sommerfeld applied the Fermi-Dirac statistic to the Drude model, solving many problems regarding the behavior of electrons in metals and giving rise to what is commonly called the Drude-Sommerfeld model.
Between 1928 and 1929, satisfied with what he had achieved in America a few years earlier, the Ordinary of Monaco brought his conception of theoretical physics around the world and in particular of the still much debated quantum mechanics, visiting again the United States, China, Japan and dwelling in India.

Description

*Google Translate Warning*

Arnold Johannes Wilhelm Sommerfeld (Königsberg, December 5, 1868 - Munich, April 26, 1951) was a German physicist.
He worked in theoretical physics, in particular in atomic and quantum physics. He is known for his contributions to the Bohr atomic model, for the Wilson-Sommerfeld formula, for the introduction of the fine structure constant in quantum mechanics and of the orbital quantum number. The first theoretical description of tachyons is generally attributed to Sommerfeld.
His students included Werner Heisenberg, Wolfgang Pauli, Peter Debye, Hans Bethe.
Sommerfeld was honored with many important honors, including the Lorentz Medal, the Planck Medal and the Oersted Medal. He also received awards from the Royal Society of London, the National Academy of Sciences in Washington, the Accademia dei Lincei, the Academy of U.R.S.S. and the Indian Academy of Sciences, as well as at the Academies of Berlin, Munich, Vienna, Göttingen, Budapest, Uppsala and Madrid. However, he never achieved the Nobel Prize, despite the undefeated record of 81 nominations.
in 1905 he had done for Einstein's theory of special relativity, Sommerfeld enthusiastically welcomed the new ideas of the Danish physicist, immediately putting to work and encouraging his students to dedicate themselves to it.
In September 1922, he accepted to spend the academic year as a visiting professor at the University of Madison (Wisconsin, USA). In 1927 Sommerfeld applied the Fermi-Dirac statistic to the Drude model, solving many problems regarding the behavior of electrons in metals and giving rise to what is commonly called the Drude-Sommerfeld model.
Between 1928 and 1929, satisfied with what he had achieved in America a few years earlier, the Ordinary of Monaco brought his conception of theoretical physics around the world and in particular of the still much debated quantum mechanics, visiting again the United States, China, Japan and dwelling in India.