Toroidal
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What links here
Vortex ring
Smoke ring
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Air vortex cannon
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Sphagnum
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Pappus (botany)
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Quantum turbulence
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Haptic technology
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Mushroom cloud
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Effects of nuclear explosions
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Mount Etna
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Vortex
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Ground effect (aerodynamics)
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Hermann von Helmholtz
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