= Manne Siegbahn
{c}
{tag=Physicist}
{title2=1886–1978}
{wiki}
= Karl Manne Georg Siegbahn
{c}
{synonym}
= K. M. G. Siegbahn
{c}
{synonym}
<Manne Siegbahn> developed precision <X-ray spectroscopy> for investigating atomic structure. A <crystal> converts an <X-ray> <wavelength> into a <diffraction> angle through <Bragg's law>. Careful control of the crystal geometry, angular calibration, <spectral resolution> and instrumental <absorption> therefore determines which characteristic <spectral lines> can be distinguished. His instrumentation resolved relationships and small differences that a coarser <spectrometer> would merge, making precision measurement part of the explanation of atomic <X-ray> <spectral lines>.<Nobel Lectures, Physics 1922–1941/The X-ray Spectra and the Structure of the Atoms by Karl Manne Georg Siegbahn>[Nobel lecture: precision X-ray spectroscopy and atomic interpretation]{ref}
Physics.https://sok.riksarkivet.se/sbl/Presentation.aspx?id=5900[Independent professional profile]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/1924%20Karl%20Manne%20Siegbahn.jpg?width=250]
{title=Portrait of <Manne Siegbahn>}
{description=Nobel Foundation, 1924 portrait; individual photographer unspecified. Commons records Swedish-photograph public-domain status and United States public domain through publication before 1931. https://commons.wikimedia.org/wiki/File:1924_Karl_Manne_Siegbahn.jpg[Source usage terms], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:1924_Karl_Manne_Siegbahn.jpg}
{width=250}
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