In fluid mechanics, a measure of the rate of rotational spin in a fluid.
Mathematically, vorticity is a vector field defined as the curl of the velocity field:
ω = ∇ x v. Meteo.: The rotation of air around a vertical axis.
From L. vortic-, from → vortex +
Gerdšârigi, from gerdšâr→ vortex +
-igi, → -ity.
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