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Vortex

From Simple English Wikipedia, the free encyclopedia
Vortex created by the passage of an aircraft wing, revealed by coloured smoke

A vortex (pl. vortices) is a spinning, often turbulent, flow of fluid. The motion of the fluid swirling rapidly around a center is called a vortex. The speed and rate of rotation of the fluid are greatest at the center and become smaller with distance from the center.

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