Aleksander Jablonski (1898-1980):

Born in Voskresenovka, Ukraine. Started studying physics at Kharkov University and continued (after the 1st World War at Warsaw under S. Pienkowski. He received his PhD in 1930. In 1935 he suggested the famous diagram, commonly known under his name, which makes it possible to explain both the kinetics and spectra of fluorescence, phosphorescence and delayed fluorescence. In 1931 Jablonski started to work in his second main field of research, namely the pressure broadening of spectral lines. In 1945 he moved to Torun and became the first chairman of the Physics department.

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