Henry Philibert Gaspard Darcy (June 10, 1803 - January 3, 1858), was a French scientist who made several important contributions to hydraulics.

Biography

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He was born in Dijon, France; despite his father's death in 1817 when he was 14, his mother was able to borrow money to pay for his tutors. In 1821 he enrolled at the École Polytechnique (Polytechnic School) in Paris, and transferred two years later to the École des Ponts et Chaussées (School of Bridges and Roads), which lead to employment in the Corps of Bridges and Roads.

He met Englishwoman Hanriette Carey, whose family had been living in Dijon, and married her in 1828.

As a member of the Corps, he built an impressive pressurized water distribution system in Dijon following the failure of attempts to supply adequate fresh water by drilling wells. The system carried water from Rosoir Spring 12.7 km away through a covered aqueduct to reservoirs near the city, which then fed into a network of 28,000 meters of pressurized pipes delivering water to much of the city. The system was fully closed and pressurized by gravity, and thus required no filters or pumps. He was also involved in many other public works in and around Dijon, as well in the politics of the Dijon city government.

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