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Not to nit-pick your art, but....
Air being compressible fluid, the 'ball' of air will be a half-ball shape.
An interesting phenomenon is that big trucks on I-5 in the rain will have a cylindrical plume of water and air projecting outward from the front wheelwells well into the pressure gradient. The air is entrained by the rotating tire.
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Last edited by freebeard; 01-16-2023 at 03:16 PM..
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