József Károly Hell: Difference between revisions
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[[Category:Slovak scientists|Hell, Jozef Karol]] |
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[[Category:Inventors|Hell, Jozef Karol]] |
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[[Category:1713 births|Hell, Jozef Karol]] |
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Revision as of 01:17, 8 December 2005
Jozef Karol Hell (German: Joseph Karl Hell) (1713-1789) – was a Slovak mining engineer and inventor who, in 1755, invented the water-pillar, the world's first water pump machine. It is mainly used today for oil extraction.