0 points

Here’s a new clearer statement to express my thoughts on the matter.

Contrails are visible and normal and fine. I probably don’t fully understand the science behind them, but I realize what we are seeing is water vapor.

Chemtrails are also real though. They are invisible to the naked eye and are directly contributing to global warming as well as some health concerns that are hard to quantify. They are not some conspiracy to control or disable the masses. The exhaust of cars and especially planes leave a trail of harmful chemicals behind them. The reason for this is because we care more about convenience and money than we do about the ecosystem we live in.

I personally believe pointing out that dichotomy is more useful than laughing at people who are misinformed.

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21 points

that’s not a workable strategy because when you redefine terms like that you sound just like a conspiracy theorist. exhaust gases are not “chemtrails”, they’re exhaust gases. they’re dangerous and everywhere, but they’re not a secret government conspiracy.

we don’t need a “new way” to talk about things with people who refuse to understand.

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10 points

If you loosely define chemtrails as “a trail of chemicals” then almost everything has chemtrails. Fuckkin ants have chemtrails, it’s how they communicate and navigate.

Chemtrail conspiracists literally think that airplanes are full of 55 gallon drums of chemicals with the express purpose to harm or feminize the populace to prevent people from opposing the government.

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6 points

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2 points

prevent people from opposing the government

…so it’s working then

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1 point
Deleted by creator
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13 points

Chemtrails are broadly believed to be nefarious chemicals that alter everything from weather (to facilitate global warming, not to prevent it) to human/animal hormones. While exhaust is no doubt harmful, when conspiracy theorists speak of chemtrails, they are speaking of shady government operatives intentionally loading the planes with experimental chemicals that are meant to be rained down onto the masses.

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-1 points
*

Can you blame them when the US government has directly experimented on the American populace in past?

e.g. https://en.m.wikipedia.org/wiki/Operation_Sea-Spray

From the page:

Between 1949 and 1969, open-air tests of biological agents were conducted 239 times.

239 open-air tests of biological agents in a 20 year period. Many, many people are still alive from that time period. It’s not that long ago.

Or more broadly, just look at this page: https://en.m.wikipedia.org/wiki/Unethical_human_experimentation_in_the_United_States

Do those pages inspire trust in the government and military? Would you know if you were being experimented on and gaslit?

Corporations engage in similar unethical behavior, like putting ingredients that are known to be toxic or harmful to human health in products we consume or put on our bodies.

Instead of blaming or name-calling people who are paranoid or suspicious, we need a society with a greater focus on human rights — with more regulation and oversight. A society that inspires trust, with the facts, ethics, and independent review to back it up.

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2 points

Instead of blaming or name-calling people who are paranoid or suspicious

You’re leaving out the massively important fact that a basic science fact that one can experiment and experience themselves on a cool morning is enough to destroy these idiots. If your world view is that fragile then you deserve all mockery you get for holding it continually

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2 points

Contrails are assholes. They are too thin to reflect sunlight, but they soak up and trap heat. They form a blanket and contribute a ton to global warming.

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-13 points

Nah, plane exhaust is real and killing the planet. Just because the contrails are science and not doing mind control doesn’t mean they’re not still bad.

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33 points

Well, it’s not jet exhaust you’re seeing, though. It’s water vapor in air that’s been compressed in a jet engine and then quickly decompressed out of the back, which causes the air to cool thus condensing the water vapor into droplets similar to those in a cloud.

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-1 points

Just because the contrails are science

I understand that part, doesn’t stop them from containing the plane exhaust which is directly contributing to global warming

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6 points

Well, it’s not jet exhaust you’re seeing, though.

I did acknowledge that, by the way. Jet fumes certainly contribute to global warming. I wasn’t intending to imply they don’t. Simply that it’s not jet fumes you’re seeing in contrails.

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-6 points
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Incorrect. The condensation you are seeing in the air is a product of combustion. If no water was added to the air, then compressing it and decompressing it would not create a cloud or vapor trail.

Edit: Fine. It’s mostly incorrect.

https://en.wikipedia.org/wiki/Contrail

Yes, the lower pressure can create a very temporary contrail, and in rare situations where the engine exhaust also cools down below freezing before it reaches ambient pressure, ice crystals can form and create a longer more visible contrails. Realistically, what you are seeing in a contrail is water vapor from combustion. Seriously, H2O and water are the largest products of combustion, and it’s like 99% of what you are seeing behind aircraft.

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1 point

The longetivity of a contrail is determined by the atmospheric conditions. In sufficiently dry air no contrail is formed as the water introduced by the combustion isn’t enough to raise the frost point to the ambient temperature. More humidity means that the contrail may form and even persist for a while without sublimating away (Cirrus homogenitus). If the air is even more humid, the contrail may even start to grow and change shape (turning into Cirrus homomutatus). This last case is what I suspect gets the foil hats most riled up about “chemtrails”.

https://cloudatlas.wmo.int/en/explanatory-remarks-and-special-clouds-cirrus.html

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2 points
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And those clouds, being too thin to reflect sunlight but able to trap heat, form a kind of blanket around earth, greatly contributing to global warming.

If I understand it correctly, you could magic away the exhaust and have perfectly clean contrails, and they would still warm the planet.

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1 point

Close, the visible parts do reflect sunlight, but what gets through still gets trapped by the greenhouse gasses. You can see the effect in the aftermath of the mass grounding of aircraft on 9/11. There were crystal clear skies and a relatively large jump in temperature compared to just before and after the grounding.

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1 point

Yep, you’re spot on

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6 points

I think it might be more about temperature differences than pressure differences. That is to say hot exhaust cools rapidly and any water vapor condenses. Some aircraft leave no contrails, depending on atmospheric conditions.

Here is a chart to predict contrails on a high-bypass jet engine

And here are aircraft leaving contrails without any jet engines

And some more leaving no contrails at all

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4 points
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The temperature difference is caused by the pressure difference. Airplanes have always caused pressure differentials. Jet engines just cause more pressure than wings and propellers do.

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2 points
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2 points

Another effect is micro-particles from the jet exhaust that form a lot of nucleation sites, this allows the vapor in the air to condense into tiny droplets more easily.

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8 points

Oh so you think you can science your way out of this?

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1 point

To be fair, they do look ugly in the sky.

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-1 points
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1 point

What if I’m competing with them from a company based (not entirely for tax reasons) on Mercury?

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9 points

More like elementary school. We learned about water vapor in 3rd grade.

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