Editing Jean Léonard Marie Poiseuille (section)

==Life==
Poiseuille was born and died in Paris.<ref name="Sutera"/> From 1815 to 1816, he studied at the [[École Polytechnique]] in Paris, where He was trained in [[physics]] and [[mathematics]].<ref name="Brillouin">{{cite journal |last1=Brillouin |first1=Marcel |title=Jean Leonard Marie Poiseuille |journal=Journal of Rheology |date=July 1930 |volume=1 |issue=4 |pages=345–348 |doi=10.1122/1.2116329 |bibcode=1930JRheo...1..345B |url=http://gidropraktikum.narod.ru/Poiseuille.pdf}}</ref> In 1828, he earned his [[Doctor of Science|D.Sc.]] degree with a dissertation entitled ''Recherches sur la force du coeur aortique'' (The force of the aortic heart). He was interested in the flow of [[human blood]] in narrow tubes, and invented the U-tube mercury [[manometer]] (or hemodynamometer) to measure [[arterial blood pressure]]s in horses and dogs.<ref name="Sutera">{{cite journal |last1=Sutera |first1=S P |last2=Skalak |first2=R |title=The History of Poiseuille's Law |journal=Annual Review of Fluid Mechanics |date=January 1993 |volume=25 |issue=1 |pages=1–20 |doi=10.1146/annurev.fl.25.010193.000245 |bibcode=1993AnRFM..25....1S |language=en |issn=0066-4189|doi-access= }}</ref>

In 1838, he experimentally derived, and in 1840 and 1846 formulated and published, Poiseuille's law (now commonly known as the [[Hagen–Poiseuille equation]], crediting [[Gotthilf Hagen]] as well), which applies to [[laminar flow]], that is, non-turbulent flow of liquids through pipes of uniform section, such as blood flow in [[capillaries]] and [[veins]]. The [[Poise (unit)|poise]], the unit of [[viscosity]] in the [[Centimetre gram second system of units|CGS system]], was named after him; a proposed [[SI]] unit for viscosity, the [[poiseuille (unit)|poiseuille]], was also named in his honour.