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Comment on What are these things? I always see them in the sky

Those are contrails caused by aircraft. Contrails come from one of two sources- either water vapor in the jet engine’s exhaust (one of the products of combusting hyrdocarbons is water,) condensing into a stream of mini clouds.

The other source is caused by the flow of air over the surfaces of the plane. typically over the aerodynamic surfaces (though in the YF-23, it could have been caused by that valley between the engines,) What’s happening here is there’s water vapor in the humid air, and the dewpoint is such that, as the air flows around the wing- the air pressure changes, and if that pressure change is enough, it’ll cause the humid air to momentarily drop below the dew point creating a stream of cloud.

If, any points to a contrail and says ‘AH CHEM TRAIL’ feel free to laugh at them. it’s just water vapor that’s been condensed into suspended water droplets.

(Re-Commenting, since my original comment got yeeted into the nether… sorry, this is in exact but it should at least have all the same information for posterity)

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eldoom@lemm.ee ⁨9⁩ ⁨months⁩ ago
My brother has this completely redpilled friend. He’s taken college level classes on aerodynamics and aerospace manufacturing (so have I). He’s always pointing out the contrails and saying something about mind control or Bill Gates…

I always sarcastically ask him about what other medium would he expect them to be projecting the sky on. Gets him to shut up real quick. For an hour or so… They really aren’t that bright.

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- PetDinosaurs@lemmy.world ⁨9⁩ ⁨months⁩ ago
  I’ve told one of them that if they really had a chemical that is undetectable and operates at such small doses, it would be much cheaper and easier just to have a few guys with a pickup truck dropping bags of it in the reservoirs.
  
  Way easier to keep that under wraps than to deliver tons of it to all the world’s airports and secretly load it onto all the planes.
  
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- FuglyDuck@lemmy.world ⁨9⁩ ⁨months⁩ ago
  Here. This will convince them:
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Kolanaki@yiffit.net ⁨9⁩ ⁨months⁩ ago
There is another kind of trail left by planes that really are chemicals, though: Crop dusters.

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- FuglyDuck@lemmy.world ⁨9⁩ ⁨months⁩ ago
  Yeah. But that, like cloud seeding, isn’t what the conspiracy is about, and pretty self evident as they’re just above the crops they’re dusting.
  
  We’ll add water drops for attacking wildfires on this list, too.
  
  Although, technically…. Water is also a chemical…but let’s not confuse them.
  
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