Editing Levitation (physics) (section)

==Aerodynamic levitation==
{{main|Aerodynamic levitation}}
In aerodynamic levitation, the levitation is achieved by floating the object on a stream of gas, either produced by the object or acting on the object. For example, a [[ping pong ball]] can be levitated with the stream of air from a vacuum cleaner set on "blow" - exploiting the [[Coandă effect]] which keeps it stable in the airstream. With enough thrust, very large objects can be levitated using this method.

===Gas film levitation===
This technique enables the levitation of an object against [[gravitational force]] by floating it on a thin [[gas]] film formed by gas flow through a [[porous]] membrane.  Using this technique, high temperature melts can be kept clean from contamination and be supercooled.<ref name=Nordine2000/>  A common example in general usage includes [[air hockey]], where the puck is lifted by a thin layer of air.  [[Hovercraft]] also use this technique, producing a large region of high-pressure air underneath them.