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Contrails (short for aircraft condensation trails) persist when they are formed at a sufficiently low temperature for them to become frozen before they evaporate. Then because of different winds at different levels, they may be spread over the sky to form a layer of artificial cirrus. Sometimes the air is sufficiently dry for the ice cloud to evaporate in ten minutes or so; but often it may last for several hours.
originally posted by: ThisIsMyRifle
a reply to: WakeUpBeer
But I was talking Chemtrails not contrails.
originally posted by: ThisIsMyRifle
a reply to: WakeUpBeer
But I was talking Chemtrails not contrails. As far as I know, and I may be wrong, but I thought chemtrails were a supposed 'cure' for global warming
The lines filling our skies are not contrails. The lines are dispersed and may linger for hours, slowly filtering down to unsuspecting pests, and I guess we’re the PESTS.
originally posted by: ThisIsMyRifle
a reply to: WakeUpBeer
But I was talking Chemtrails not contrails. As far as I know, and I may be wrong, but I thought chemtrails were a supposed 'cure' for global warming, reflecting the suns' rays back to space and all. And from what I've seen, the worry about global warming has only been around since the mid 1970's. But this video is from somewhere in the 1940-50s.
Chemtrails are said to be chemicals, Chromium and such dispersed in the air, not natural condensation. Norm planes, the big ones, 737s and up do leave a trail behind them, but when I witness those myself, the contrail doesn't last very long. Who's to say what these really are? Not me. I'm just saying I found these so called 'chemtrails' in a much earlier video than when they supposedly came on the scene and caused such a controversy.
originally posted by: Rob48
originally posted by: ThisIsMyRifle
a reply to: WakeUpBeer
But I was talking Chemtrails not contrails. As far as I know, and I may be wrong, but I thought chemtrails were a supposed 'cure' for global warming, reflecting the suns' rays back to space and all. And from what I've seen, the worry about global warming has only been around since the mid 1970's. But this video is from somewhere in the 1940-50s.
Chemtrails are said to be chemicals, Chromium and such dispersed in the air, not natural condensation. Norm planes, the big ones, 737s and up do leave a trail behind them, but when I witness those myself, the contrail doesn't last very long. Who's to say what these really are? Not me. I'm just saying I found these so called 'chemtrails' in a much earlier video than when they supposedly came on the scene and caused such a controversy.
Of course, this is something of a thorn in the side of chemtrail believers, who claim that persistent contrails are a new thing. So, of course, they do what chemtrail believers always do: lie, and say that such trails have been digitally inserted into every single copy of these old movies in existence.
Of course.
originally posted by: mrthumpy
originally posted by: Rob48
originally posted by: ThisIsMyRifle
a reply to: WakeUpBeer
But I was talking Chemtrails not contrails. As far as I know, and I may be wrong, but I thought chemtrails were a supposed 'cure' for global warming, reflecting the suns' rays back to space and all. And from what I've seen, the worry about global warming has only been around since the mid 1970's. But this video is from somewhere in the 1940-50s.
Chemtrails are said to be chemicals, Chromium and such dispersed in the air, not natural condensation. Norm planes, the big ones, 737s and up do leave a trail behind them, but when I witness those myself, the contrail doesn't last very long. Who's to say what these really are? Not me. I'm just saying I found these so called 'chemtrails' in a much earlier video than when they supposedly came on the scene and caused such a controversy.
Of course, this is something of a thorn in the side of chemtrail believers, who claim that persistent contrails are a new thing. So, of course, they do what chemtrail believers always do: lie, and say that such trails have been digitally inserted into every single copy of these old movies in existence.
Of course.
Or they change the claim to match reality and say that chemtrails have been around for that long actually. Which I presume must mean that all those people who have sworn blind that they never saw these trails growing up have unreliable memories as the debunkers have been saying all along
originally posted by: Taggart
originally posted by: mrthumpy
originally posted by: Rob48
originally posted by: ThisIsMyRifle
a reply to: WakeUpBeer
But I was talking Chemtrails not contrails. As far as I know, and I may be wrong, but I thought chemtrails were a supposed 'cure' for global warming, reflecting the suns' rays back to space and all. And from what I've seen, the worry about global warming has only been around since the mid 1970's. But this video is from somewhere in the 1940-50s.
Chemtrails are said to be chemicals, Chromium and such dispersed in the air, not natural condensation. Norm planes, the big ones, 737s and up do leave a trail behind them, but when I witness those myself, the contrail doesn't last very long. Who's to say what these really are? Not me. I'm just saying I found these so called 'chemtrails' in a much earlier video than when they supposedly came on the scene and caused such a controversy.
Of course, this is something of a thorn in the side of chemtrail believers, who claim that persistent contrails are a new thing. So, of course, they do what chemtrail believers always do: lie, and say that such trails have been digitally inserted into every single copy of these old movies in existence.
Of course.
Or they change the claim to match reality and say that chemtrails have been around for that long actually. Which I presume must mean that all those people who have sworn blind that they never saw these trails growing up have unreliable memories as the debunkers have been saying all along
I don't have a dog in the fight but how long back are we talking that people said they never saw them when growing up?
how does an observer determine if a given trail is a contrail or alledged " chemtrail "
originally posted by: intrptr
a reply to: ignorant_ape
how does an observer determine if a given trail is a contrail or alledged " chemtrail "
We're not supposed to. The chemtrail Internet blather is a distraction from the real problem regards pollution generated by burning all that jet fuel, at altitude or around airports.
To which my response is always: why planes? Why aren't chemtrail activists camping at petrol stations protesting against vehicles?
Modern jet engines are incredibly efficient and clean-burning…
files.abovetopsecret.com...
originally posted by: intrptr
a reply to: Rob48
Clean Exhaust?
originally posted by: Rob48
How this nonsense ever became a widespread theory is one of the great mysteries of our time!
Even assuming the worst-case scenario for jet engines of 0.7 kg per tonne, a car engine produces FIFTY TIMES MORE unburnt hydrocarbon pollution from the same volume of fuel.
Yeah I'd say that's pretty clean exhaust!
How this nonsense ever became a widespread theory is one of the great mysteries of our time!