Editing Vortex (section)

==Further examples==
[[File:C17 Reverse Thrust.JPG|thumb|The visible core of a vortex formed when a [[Boeing C-17 Globemaster III|C-17]] uses high engine power at slow speed on a wet runway.]]
[[File:Vortices off Tristan da Cunha, Jul 14 2010 1100(UTC).jpg|thumb|[[Kármán vortex street]]s formed off the island of [[Tristan da Cunha]]]]
*In the [[hydrodynamics|hydrodynamic]] interpretation of the behaviour of [[electromagnetic field]]s, the acceleration of electric fluid in a particular direction creates a positive vortex of magnetic fluid. This in turn creates around itself a corresponding negative vortex of electric fluid. Exact solutions to classical nonlinear magnetic equations include the [[Landau–Lifshitz model|Landau–Lifshitz equation]], the continuum [[Heisenberg model (classical)|Heisenberg model]], the [[Ishimori equation]], and the [[nonlinear Schrödinger equation]].
*[[Vortex ring]]s are [[torus]]-shaped vortices where the axis of rotation is a continuous closed curve. [[Smoke ring]]s and [[bubble ring]]s are two well-known examples.
*The [[lift-induced drag|lifting force]] of [[aircraft wings]], [[propeller]] blades, [[sail]]s, and other airfoils can be explained by the creation of a vortex superimposed on the flow of air past the wing.
*[[Aerodynamic drag]] can be explained in large part by the formation of vortices in the surrounding fluid that carry away energy from the moving body.
*Large whirlpools can be produced by ocean tides in certain [[strait]]s or [[bay]]s. Examples are [[Charybdis]] of classical [[mythology]] in the Straits of [[Messina]], Italy; the [[Naruto whirlpool]]s of [[Nankaido]], Japan; and the [[Whirlpool|Maelstrom]] at [[Lofoten]], Norway.
*Vortices in the [[Earth's atmosphere]] are important phenomena for [[meteorology]]. They include [[mesocyclone]]s on the scale of a few miles, tornadoes, [[waterspout]]s, and hurricanes.  These vortices are often driven by temperature and humidity variations with altitude. The sense of rotation of hurricanes is influenced by the Earth's rotation. Another example is the [[Polar vortex]], a persistent, large-scale cyclone centered near the Earth's poles, in the middle and upper troposphere and the stratosphere.
*Vortices are prominent features of the atmospheres of other [[planet]]s. They include the permanent [[Great Red Spot]] on [[Jupiter]], the intermittent [[Great Dark Spot]] on [[Neptune]], the polar vortices of [[Venus]], the [[Martian dust devil]]s and the [[Saturn's hexagon|North Polar Hexagon]] of [[Saturn]].
*[[Sunspot]]s are dark regions on the Sun's visible surface ([[photosphere]]) marked by a lower temperature than its surroundings, and intense magnetic activity.
*The [[accretion disk]]s of [[black hole]]s and other massive gravitational sources.
*[[Taylor–Couette flow]] occurs in a fluid between two nested cylinders, one rotating, the other fixed.