Søren Hjorth
Danish railway pioneer and inventor
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/S%C3%B8ren_Hjorth_by_H.P._Hansen.jpg/220px-S%C3%B8ren_Hjorth_by_H.P._Hansen.jpg)
Søren Hjorth (13 October 1801, in Vesterbygaard at Kalundborg in the west of Zealand (Denmark) – 28 August 1870, in Copenhagen) was a Danish railway pioneer and inventor. Before Werner von Siemens, he discovered the dynamo-electric principle in 1854 and received the first patent for a self-excited dynamo.
Sources
- Søren Hjorth, inventor of the dynamo-electric principle; by Sigurd Smith. Pub. by "Elektroteknisk forening" at the expense of the Carlsberg foundation. (1912)