Fine structur

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Interference fringes, showing fine structure (splitting) of a cooled deuterium source, viewed through a Fabry–Pérot interferometer.

In atomic pheesics, tha fine structure describes the splitting of the spectral lines of atoms due tae electron spin and relativistic corrections to the non-relativistic Schrödinger equation. It was first meisuret precisely fer tha hydrogen atom by Albert A. Michelson and Edward W. Morley in 1887,[1] whilk led tae tha theoretical treatment by Arnold Sommerfeld, who introduicet tha fine-structur constant.[2]

  1. AA. Michelson and E. W. Morley, Amer. J. Sci.34, 427 (1887); Phil Mag. 24, 463 (1887)
  2. A.Sommerfeld: Zur Feinstruktur der Wasserstofflinien; Naturwissenschaften July 1940, Volume 28, Issue 27, pp 417–423; (in German)