victory of Salvador Allende in Chile, U.S. collaboration with dictatorships in South America became part of its foreign policy. Plan Condor — which was backed by the U.S. and orchestrated mainly by Chile under Augusto Pinochet and Argentina under Jorge Rafael Videla — resulted in the murder of tens of thousands of socialists and communists. In Argentina alone, the disappeared death toll reached 30,000.

Apart from providing financial and political support, declassified documents also reveal that the U.S. was knowledgeable about the “death flights” — an operation through which the military disposed of the disappeared by packaging the bodies and throwing them into the ocean from helicopters. The U.S. was also complicit in the death flights, having provided Argentina with helicopters for the purpose of disappearing political opponents.

Refining oppression,new theory of resistance of fluids]. Paris.
 Introduces D'Alembert's Paradox.

  (Presented in 1755)
 Formulates the theory of fluid dynamics in terms of a set of partial differential equations: Euler equations (fluid dynamics)

  (Presented in 1822)
 First formulation of the Navier–Stokes equations, albeit based on an incorrect molecular theory.

  (Presented in 1845)
 Correct formulation of the Navier–Stokes equations.

 
 Introduced the study of vortex dynamics (see Vorticity).

Introduces the dimensionless Reynolds number, investigating the critical Reynolds number for transition from laminar to turbulent flow.

  (Presented in 1904)
 Introduces the Boundary layer.

. Translated into English by 
Introduces a quantitative theory of turbulence.

Computational physics
 S. Ulam, R. D. Richtmyer, and J. von Neumann (1947). "Statistical methods in neutron diffusion"; LANL Scientific Laboratory report LAMS–551. Retrieved 2011-10-23.
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