Photo from the Nobel Foundation archive.
Karl Manne Georg Siegbahn
Born: 3 December 1886, Örebro, Sweden
Died: 26 September 1978, Stockholm, Sweden
Affiliation at the time of the award: Uppsala University, Uppsala, Sweden
Prize motivation: "for his discoveries and research in the field of X-ray spectroscopy."
Manne Siegbahn received his Nobel Prize one year later, in 1925.
Prize share: 1/1
A few years after the discovery of X-rays, Charles Barkla showed that compounds exposed to X-rays emitted secondary X-rays with wavelengths that were characteristic of different elements. After studying a number of elements, Henry Moseley was able to add to and revise the periodic table. Manne Siegbahn developed apparatus and methods for improving accuracy when mapping x-ray spectra. This advance proved important in the development of atomic and quantum physics.