Tolong jelaskan mengenai Arnold Sommerfeld

Arnold Johannes Wilhelm Sommerfeld,  () adalah seorang fisikawan teoretikal Jerman yang mepelopori pengembangan fisika atom dan fisika kuantum, dan juga mendidik dan membimbing sejumlah besar murid dari era baru fisika teoterikal. Ia menjabat sebagai petinggi PhD untuk beberapa pemenang Nobel fisika dan kimia (rekor kementorannya hanya berbanding dengan J. J. Thomson).

Ia mengenalkan nomor kuantum ke-2 (nomor kuantum azimuthal) dan nomor kuantum ke-4 (nomor kuantum putaran). Ia juga memperkenalkan konstan struktur murni dan mempelopori teori arus sinar X.

Born, Max, Arnold Johannes Wilhelm Sommerfeld, 1868–1951, Obituary Notices of Fellows of the Royal Society Volume 8, Number 21, 274–296 (1952)

Cassidy, David C., Uncertainty: The Life and Science of Werner Heisenberg  (W. H. Freeman and Company, 1992), ISBN 0-7167-2503-7 (Since Werner Heisenberg was one of Sommerfeld's Ph.D. students, this is an indirect source of information on Sommerfeld, but the information on him is rather extensive and well documented.)

Eckert, Michael, Arnold Sommerfeld: Atomphysiker und Kulturbote 1868-1951. Eine Biografie (Deutsches Museum, Wallstein Verlag, 2013)

Eckert, Michael, trans. Tom Artin, Arnold Sommerfeld: Science, Life and Turbulent Times, 1868-1951 (Springer, 2013)

Eckert, Michael, Propaganda in science: Sommerfeld and the spread of the electron theory of metals, Historical Studies in the Physical and Biological Sciences Volume 17, Number 2, 191–233 (1987)

Eckert, Michael, Mathematics, Experiments, and Theoretical Physics: The Early Days of the Sommerfeld School, Physics in Perspective Volume 1, Number 3, 238–252 (1999)

Hentschel, Klaus (Editor) and Ann M. Hentschel (Editorial Assistant and Translator), Physics and National Socialism: An Anthology of Primary Sources (Birkhäuser, 1996)

Jungnickel, Christa and Russell McCormmach. Intellectual Mastery of Nature. Theoretical Physics from Ohm to Einstein, Volume 1: The Torch of Mathematics, 1800 to 1870. University of Chicago Press, paper cover, 1990a. ISBN 0-226-41582-1

Jungnickel, Christa and Russell McCormmach. Intellectual Mastery of Nature. Theoretical Physics from Ohm to Einstein, Volume 2: The Now Mighty Theoretical Physics, 1870 to 1925. University of Chicago Press, Paper cover, 1990b. ISBN 0-226-41585-6

Kant, Horst, Arnold Sommerfeld – Kommunikation und Schulenbildung in Fuchs-Kittowski, Klaus ; Laitko, Hubert ; Parthey, Heinrich ; Umstätter, Walther (editors) Wissenschaft und Digitale Bibliothek: Wissenschaftsforschung Jahrbuch 1998 135–152 (Verlag der Gesellschaft für Wissenschaftsforschung, 2000)

Kirkpatrick, Paul, Address of Recommendation by Professor Paul Kirkpatrick, Chairman of the Committee on Awards, American Journal of Physics Volume 17, Number 5, 312–314 (1949). Address preceding award to Arnold Sommerfeld, recipient of the 1948 Oersted Medal for Notable Contributions to the Teaching of Physics, 28 January 1949.

Kragh, Helge, Quantum Generations: A History of Physics in the Twentieth Century  (Princeton University Press, fifth printing and first paperback printing, 2002), ISBN 0-691-01206-7

Kuhn, Thomas S., John L. Heilbron, Paul Forman, and Lini Allen, Sources for History of Quantum Physics  (American Philosophical Society, 1967)

Mehra, Jagdish, and Helmut Rechenberg, The Historical Development of Quantum Theory. Volume 1 Part 1 The Quantum Theory of Planck, Einstein, Bohr and Sommerfeld 1900–1925: Its Foundation and the Rise of Its Difficulties. (Springer, 1982), ISBN 0-387-95174-1

Pauling, Linus, Arnold Sommerfeld: 1868–1951, Science Volume 114, Number 2963, 383–384 (1951)

Singh, Rajinder, "Arnold Sommerfeld – The Supporter of Indian Physics in Germany"  Current Science 81 No. 11, 10 December 2001, pp. 1489–1494

Walker, Mark, Nazi Science: Myth, Truth, and the German Atomic Bomb (Persius, 1995), ISBN 0-306-44941-2