Vorticity
What is it?
Vorticity is a vector quantity that represents the curl (or rotation) that acts on a particle drawn into a vortex.
Give me an example!
A common example of a vortex is water going down a drain. Instead of just flowing down in a straight line, the water molecules spin into a swirling vortex. If you were to map out the exact motion of these molecules, they would have one vector that is called vorticity.
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