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Dapaga
Do you know what cirrus clouds are?
I do.
This is obviously a topic that rises passion in people. I have looked at both sides, and as in the video I linked to (thanks for posting it Network Dude) it is safe to argue that are two types of contrails; those that dissipate and those that do not.
I am just looking for the truth.
If what you say is true and it is no more than a cirrus cloud up in the sky; then it looks to me like it might be a military cloud seeding project.
reply to post by mrthumpy
So you understand that cirrus are composed of ice crystals?
Dapaga
reply to post by mrthumpy
So you understand that cirrus are composed of ice crystals?
Hmmm... not sure if my understanding of clouds is the reason the OP posted the video. I think he was looking for answers to what he described as "not natural" maybe he should have described it as "appears intentional". Then we wouldn't have a cloud debate.
Harvin
I dont know much regarding chemtrails or contrails, how or why they appear etc. What i do know is what i see and I recall being fascinated by seeing jets way up in the sky leaving trails that looked exactly like that and this was in the late 70s and early 80s.
Actually, since contrails are man made clouds, it's vitally important to comprehend clouds. (in this debate) And yes, both sides are very determined.
network dude
Harvin
I dont know much regarding chemtrails or contrails, how or why they appear etc. What i do know is what i see and I recall being fascinated by seeing jets way up in the sky leaving trails that looked exactly like that and this was in the late 70s and early 80s.
Same here. I remember asking the question to an aeronautical engineer in the early 90's, but the memory of these contrails was from many years back. BTW, the engineer had no idea why some lingered and some persisted. Maybe he was not paying attention in class?edit on 4-3-2014 by network dude because: (no reason given)
Urantia1111
Commercial airliners don't fly 5 abreast in formation like that. As far as whether they're chemtrailing or not, the real proof would be a video shot about an hour later. If that area has gone from mostly sunny to mostly cloudy due to those "contrails" spreading out to blanket a large portion of sky, its chems.
network dude
reply to post by Harvin
If you look at some posts in this forum, you will get a chuckle. There are people who will adamantly claim that there were NEVER these trails in the sky when they were young. Yet you and I and I suspect a few others, distinctly remember them. And sadly, they base the fear of chemtrails, largely on that point. But trying to get them to change their mind is almost as tough as getting me to change mine.
Dapaga
reply to post by mrthumpy
So you understand that cirrus are composed of ice crystals?
Hmmm... not sure if my understanding of clouds is the reason the OP posted the video. I think he was looking for answers to what he described as "not natural" maybe he should have described it as "appears intentional". Then we wouldn't have a cloud debate.
[I want to add, that I do not know a lot about clouds (is it obvious?) and I see no point in debating you. you win. But that doesn't mean the search for an answer is over]
edit on 4-3-2014 by Dapaga because: claify
I always understood that a true contrail was ice crystals forming behind the plane. However, a true contrail, being made of ice, soon disappears because the ice melts.
Soylent Green Is People
Human_Alien
Look see, what preytale can this be?
As for emissions, the visible stuff you see in a contrail is NOT dirty emissions, but are mostly crystals of water-ice, and much of that water comes from moisture already in the atmosphere before the plane flew through it. Sure, a jet also creates some dirty emissions, but automobiles and industrial factory emissions cause much more air pollution than planes.
edit on 3/4/2014 by Soylent Green Is People because: (no reason given)
Close, but not perfect. Because of the extreme low temperatures at contrail altitudes (-100F or so), there is very little ambient moisture.Jet fuel (dodecane), which is C12H26, burns in an oxygen rich atmosphere The H and the O combine to make water and the C and O make carbon dioide. There is a little left over carbon which is emitted as pure carbon black soot. Like all hydrocarbon fuels, there is some sulfur contamination, so that is emitted and can combine with the H and O to form H2SO4 (sulfuric acid causing acid rain),and jet fuel also carries anti-microbial and anti-icing additives such as Prist. But there is very little of that additive. Our 747s carry about 60,000 gallons of fuel and to that 60 to 90 gallons of additive is added. Prist is almost pure ethylene glycol monomethyl ether, another organic that combusts completely.
They do not leave mile-long trails.
Commercial airliners don't fly 5 abreast in formation like that.