Come on David.You need a bit more objection here.
Water crystals and water vapour do not evaporate in minutes. Have a look at the clouds.
(Water crystals and water vapour do not evaporate in minutes. Have a look at the clouds.
Pasanonic 's been known to cause insanity in laboratory mice,
Thu 16 Apr 2009, 16:03,
archived)
are we talking about contrails or clouds?contrails disappear in less than a minute, even in seconds, just like your breath on a cold day.
(,
Thu 16 Apr 2009, 16:38,
archived)
no they don't.It depends upon the atmospheric conditions.
Contrails are the exhaust from the jet engine. Science 101 will tell you that this is water vapour leaving the engine which, at a few hundred feet behind the initial emission condenses into ice crystals and sits there like a cloud. Just like clouds if they are in a clear sky the sun will quickly burn them off. When it is cloudy you don't see them and they water vapour does not condense at lower altitudes and so you don't see them below the cloud layer. I'm a layman and all of this is perfectly understandable science.
(Contrails are the exhaust from the jet engine. Science 101 will tell you that this is water vapour leaving the engine which, at a few hundred feet behind the initial emission condenses into ice crystals and sits there like a cloud. Just like clouds if they are in a clear sky the sun will quickly burn them off. When it is cloudy you don't see them and they water vapour does not condense at lower altitudes and so you don't see them below the cloud layer. I'm a layman and all of this is perfectly understandable science.
Pasanonic 's been known to cause insanity in laboratory mice,
Thu 16 Apr 2009, 16:59,
archived)