Karl Manne Siegbahn. Historical portrait of the Swedish physicist Karl Manne Georg Siegbahn (1886- 1978). Siegbahn worked in X-ray spectroscopy from 1914,discovering a third (M) set of lines in X- ray emission spectra,corresponding to new X-rays with different energies to other X-rays. These lines provided further evidence for Bohr's shell model of the atom,where X-rays are produced by the excitation of electrons from shells within atoms. The shells would be labelled using this K- L-M-N-O-P-Q series. Siegbahn also made advances in the field of X-ray diffraction,used to determine crystal structures. He was awarded the 1924 Nobel Prize for Physics for his X-ray spectroscopy work | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 4416 px × 5723 px |
Model Release : | Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation. |
Property Release : | Non requis |
Restrictions : | - |