Sergey Chaplygin

Sergey Alexeyevich Chaplygin (Russian: Серге́й Алексе́евич Чаплы́гин; April 5, 1869, Ranenburg October 8, 1942, Novosibirsk) was a Russian and Soviet physicist, mathematician, and mechanical engineer. He is known for mathematical formulas such as Chaplygin's equation and for a hypothetical substance in cosmology called Chaplygin gas, named after him.

Sergey Alekseyevich Chaplygin
Born(1869-04-05)April 5, 1869
DiedOctober 8, 1942(1942-10-08) (aged 73)
Nationality Russia
Alma materMoscow University
Known formechanics
Awards
Orders of Lenin ((1933, 1941))
Order of the Red Banner of Labour (1927,?)
Zhukovsky Prize (1925)
Scientific career
FieldsMechanician
InstitutionsTsAGI,Moscow University, etc.
Doctoral advisorNikolay Zhukovsky
Doctoral studentsNikolai Kochin

He graduated in 1890 from Moscow University, and later became a professor. He taught mechanical engineering at Moscow Higher Women's Courses in 1901, and of applied mathematics at Moscow School of Technology, 1903. Leonid I. Sedov was one of his students.

Chaplygin's theories were greatly inspired by N. Ye. Zhukovsky, who founded the Central Institute of Aerodynamics. His early research consisted of hydromechanics. His "Collected Works" in four volumes were published in 1948.

Honours and awards

Chaplygin was elected to the Russian Academy of Sciences (the Academy of Sciences of the USSR in 1925-1991) in 1924.

The lunar crater Chaplygin and town Chaplygin are named in his honour.

See also

  • O'Connor, John J.; Robertson, Edmund F., "Sergey Chaplygin", MacTutor History of Mathematics archive, University of St Andrews.
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