F/A-18C showing wing tip vapor trails
F/A-18F showing vapor cloud over its wings
Wingtip vortices stream from an F-15 as it disengages from a KC-10 Extender following midair refueling.
A NASA study on wingtip vortices produced these pictures of smoke in the wake of a crop duster.
Wingtip vortices behind C-17 Globemaster
Wingtip vortices from a Cessna 182 wind tunnel model.