Ernst Reichenbächer (1881-1944). Studied mathematics
and received his doctorate from the University of Halle in 1903
under the guidance of Albert Wangerin (a student of Franz Neumann
in Königsberg). At first, Reichenbächer did not enter an academic
career, but started teaching in a Gymnasium in Wilhelmshaven in
North Germany, then in Königsberg on the Baltic Sea. In 1929 he
became a Privatdozent (lecturer) at the University of Königsberg
(now Kaliningrad, Russia). His courses covered special and general
relativity, the physics of fixed stars and galaxies with a touch on
cosmology, and quantum mechanics. In the fifth year of World War II
he finally received the title of professor at the University
Königsberg, but in the same year was killed during a bombing raid
on the city.