Evangelista Torricelli (1608–1647) was an Italian physicist and mathematician, best known for his work in fluid dynamics and for his invention of the barometer. He is often credited with the discovery of the principle of atmospheric pressure. One of his significant contributions to science is the Torricelli’s law, which describes the speed of fluid flowing out of an orifice under the influence of gravity.
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A physicist and mathematician associated here with Torricelli's law.[ref]
https://mathshistory.st-andrews.ac.uk/Biographies/Torricelli/. Biography: 15 October 1608 to 25 October 1647; mechanics and hydrodynamics
Portrait of Evangelista Torricelli
. Lorenzo Lippi (1606–1665), painting circa 1647; Galleria Silvano Lodi & Due / TEFAF. Reproduction credited in EXIF to Diego Brambilla / Studio Fotografico Perotti, 2011. PD-Art: Commons records origin-country/life-plus-100-or-shorter expiry, pre-1931 United States publication and its United States public-domain position for faithful two-dimensional reproductions., via Wikimedia Commons. Source.