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Born on this day
John Ericsson
John Ericsson was a Swedish-American inventor and mechanical engineer.
31st week in year
31 July 2020

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John Ericsson31.7.1803

Wikipedia (19 Jul 2013, 10:50)
John Ericsson (July 31, 1803 – March 8, 1889) was a Swedish-American inventor and mechanical engineer, as was his brother Nils Ericson. He was born at Långbanshyttan in Värmland, Sweden, but primarily came to be active in England and the United States. He is remembered best for designing the steam locomotive Novelty (in partnership with engineer John Braithwaite) and the ironclad ship USS Monitor.


- The surface condenser
- The hot air engine
- The world's first monitor, USS Monitor, was both designed and built by Ericsson for the Union Navy in the American Civil War
- Torpedo technology, especially Destroyer, an advanced torpedo boat
- The solar machine, using concave mirrors to gather sun radiation strong enough to run an engine.
- USS Princeton (1843)
- Hoop gun construction
- the Propeller
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