Between 1847 and 1849, Christian Doppler worked as professor of mathematics, physics und mechanics at the Mining and Forestry Academy in Schemnitz (today, Banská Štiavnica) in the Slovak Ore Mountains.
Image By Benjamín Jarčuška (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0), via Wikimedia Commons