Sergei Alekseevich Chaplygin (April 5, 1869 - October 8, 1942) was a Russian physicist. He is known for mathematical formulas such as Chaplygin's equation.
SergeiChaplygin's father was a shop assistant who died of cholora when Chaplygin was only two years of age.
Chaplygin wrote first on hydrodynamics under Zhukovsky's influence; in particular on the mechanics of liquids and gases, studying jet stream flow in the 1890s.
On the death of Zhukovsky in 1921, Chaplygin became Director of the Institute.
, Chaplygin's equation is a nonlinear partial differential equation partial differential equation (PDE) is an equation involving partial derivatives of an unknown function.
The equation is named for SergeiAlekseevichChaplyginSergeiAlekseevichChaplygin (April 5, 1869 - October 8, 1942) was a Russian physicist.
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