Søren Hjorth
Encyclopedia
Søren Hjorth 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)