Doppler Christian Johann, *29 November 1803 Salzburg, †17 March 1853 Venice, Austrian physicist. He studied in Salzburg and Vienna. He taught mathematics at the Polytechnic Institute in Prague from 1837 to 1847. From 1850, he was professor at the Institute for Experimental Physics at the University of Vienna. In 1842, he published the treatise Über das farbige Licht der Doppelsterne [“On the coloured light of the binary stars and some other stars of the heavens”], in which he described the phenomenon of the apparent change in frequency of a wave during the change of the distance between observer and source of the wave, known today as the Doppler effect.
