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Originally posted by smurfy
Like the Op, you're out of the window, I've already said that 'looking' at a jet trail does not premise anything, and as I already said a jet trail is also, and already is akin in it's own right to what the likes of John Holdren have already proposed, get it?
It’s actually an aerodynamic contrail. It’s formed by the reduction of pressure in the air as it moves over the wing. When the pressure of a gas falls, then its temperature also falls (the same principle as is used by your refrigerator). The reduced temperature cause small drops of water to condense, which then may freeze. The (frozen) drops get larger as more water condenses on them.
Originally posted by TauCetixeta
reply to post by Zaphod58
(Contrails?) switched off with a toggle switch?
Don't be so naive.