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History of Science & Technology Q&A (August 10, 2022)

The Stephen Wolfram Podcast

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The Origins of Viscosity

The Navier-Stokes equations have different terms that probably came in at different times. The right hand side, the del squared V thing is a representation of viscous flow. And I think that might have come in earlier than the representation of sort of inertial flow on the left hand side. But essentially what happens in the Navier- Stokes equations they describe with velocity and fluids are called kinematic viscosity. It describes the tendency of fluids to just damp out velocity.

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