© NewsFlareThe amazing video, filmed from another plane, shows the contrail forming 33,000 feet in the air.
The amazing video, filmed from another plane, shows the contrail forming 33,000 feet in the air.
The passenger who shot the video wrote online: 'This contrail looks dark against the rising sun.'
Vapour trails occur when areas of low pressure form around the edge of the wing, creating vortices - tubes of circulating air - that leave trails behind the wing's tips.
The low pressure in these areas mean that cold air can condense, leaving spectacular trails of water or even ice behind the plane.
When a plane passes through a cloud, water vapour and ice from the clouds are sucked into the vortices, adding to the effect.
The air pressure created around the plane can also cut through a cloud, parting the vapours and leaving patterns behind as the clouds gather around the vortices.
Wings can make distinct contrails in certain conditions, Usually when highly loaded and changing direction or angle. The vapor seen ( usually at the wingtips, but can form on the entire top of the wing) is from the pressure of the air being so low, close to a vacuum actually, because of the wings shape and angle. That the moisture in the air actually condenses into visible vapor. THESE TYPES ARE ONLY SEEN INTERMITTENT ON FIGHTERS PULLING HIGH G TURNS OR AIRLINERS TAKING OFF AND LANDING etc.
The other type, the one everyone is familiar with is engine contrails. this is what we see from the ground. its just excess moisture liberated by combustion. When your burning air and fuel, the humidity in the air has to go somewhere. So up high it freezes If you stand in back of a jet the hot air actually feels humid as well as hot and stinky lol.
Then there is chemtrails...but thats for another day