aerodynamic 
Date
yet another fool made by supporters of chemtrails I take this opportunity to treat the issue of condensation trails
aerodynamic .
This is a particular type of contrails, very different from the usual that we usually see in our skies. The wake is formed along the entire airfoil, particularly near the fuselage, and frequently develops iridescence several meters after the passage of the aircraft.
The principle of training is very simple: the moist air flowing on the wing is exposed to sudden pressure changes that lead to the rapid decrease in temperature, and then the freezing water into tiny ice crystals. If the humidity is adequate crystals can grow and continue to form cirrus Artificial, also typical of common contrails caused by engine exhaust.
The characteristic of this type of trails concerned that their training is done with relatively high temperatures and are therefore considered to be "complementary" to the common contrails.
At mid-latitudes the phenomenon of aerodynamic contrails at high altitude is rare, while it is quite common in very low altitude, for example on aircraft during landing.
Gierens examined in detail the formation of this type of trails defining characteristics, formation mechanism and conditions for concluding that the aerodynamic wakes of high altitude are visible only when they have relatively high temperatures (around -30 ° C) and then when
common contrails can not form.
formed The iridescence is caused by
scattering of sunlight reaching the ice crystals. Also according
Gierens under conditions of supersaturation with respect to ice crystals may, over time, increase in size causing the iridescence typical of this particular contrail.
In summary there are several types of contrails and all we can say except aerodynamic contrails are "abnormal." The fool made by supporters chemtrails is only evidence of their unwillingness to verify the information and their tendency to take everything good for carrying water to their mill. Suffice it to say that in many of the comments on You Tube someone even managed to argue that this type of trails has never existed and no one has ever spoken. Unfortunately (for the conspiracy theorists), even this is false, considering that in 1942 in a press
of NACA (National Advisory Committee for Aeronautics) was spoken of persitenti aerodynamic contrails at high altitude.
I think it is important to point out in that document also spoke at length of other types of trails and maps are attached more likely di formazione a varie altitudini e in varie stagioni. Ancora una volta i più accaniti sostenitori del complotto si sono accorti di un fenomeno ben noto alla scienza con 70 anni di ritardo, vediamo se almeno questa volta ammetteranno l'errore o come al solito chiuderanno occhi e orecchie pur di non ammettere l'evidenza dei fatti.
the MINI Diana ... Vabbeh ... and spend some time ... but it's not my fault ... The photographer gave us a bit! ... "A little much," they say to us! ... Bad experience guys! ... the first film left me no way out and I had to pull it off right in front of Buckingham Palace ... little bad ... I tried again with the second and locked up before they are run by the photographer just back from London! ... Result?? ... Only 7 euros for the development of negative ... all but two blacks ... and since we could see a glimmer of light I made them print ... 1 euro per photo! .jpg)
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