Manne Siegbahn

Karl Manne Georg Siegbahn ForMemRS was a Swedish physicist who was awarded the Nobel Prize in Physics in 1924 for his discoveries and research in the field of Xray spectroscopy.

Siegbahn was born in rebro, Sweden. He obtained his Ph.D. at the Lund University in 1911, his thesis was titled Magnetische Feldmessungen . He was acting professor for Johannes Rydberg when his health was failing, and succeeded him as full professor in 1920.

Source: Wikipedia