Johannes Stark (15.04.1874-21.06.1957) — a German physicist, a member of the Berlin Academy of Sciences. Born in Schickenhof. Graduated from the University of Munich (1898), where in 1898-1900 he was an assistant. In 1900 — 06 he worked at the University of Göttingen, in 1906 — 09 at the Higher Technical School in Hanover, in 1909 —17 he was professor at the Higher Technical School in Aachen, in 1917—20 at the University of Greifswald, in 1920 — 33 at the University of Würzburg, and in 1933 —39 president of the Physico-Technical Institute (Berlin — Charlottenburg).
His research was in the fields of optics, atomic physics and the theory of valence. In 1905 he detected the Doppler effect in canal rays, and in 1913 the phenomenon of the splitting of spectral lines in an electric field (the Stark effect) (Nobel Prize, 1919). Gave (1907) an explanation of X-ray radiation and of the secondary electrons that arise when cathode rays are decelerated.
An active opponent of the theory of relativity. During the years of the Hitler regime he showed himself an ardent Nazi.