this post was submitted on 27 Feb 2024
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Geography
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Geography is just physics slowed down, with a couple of trees stuck in it. - Terry Pratchett
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Geography is the study of places and the relationships between people and their environments. Geographers explore both the physical properties of Earth’s surface and the human societies spread across it. They also examine how human culture interacts with the natural environment and the way that locations and places can have an impact on people. Geography seeks to understand where things are found, why they are there, and how they develop and change over time. Read more...
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Wait, I thought that when water evaporated, it became completely pure water vapor. Isn’t that why we get salt crystals and the like?
Pure water picks up all manner of chemicals from the air it falls through. If there is an excess of carbon, sulfur, or toxic chemicals, they can get dissolved or carried by the water to the ground.
That's where acid rain came from.
Whoa, that makes sense but is still wild. Thank you!
Coincidentally, that process is how industrial gas scrubbers work. Imagine a showerhead inside a tank with a ton of macaroni pieces. The dirty air comes from the lower side and and a solvent (water works in many cases) pours through the shower. The contaminants dissolve in the water and air is purified (to an extent). That high surface area works wonders to exchange molecules.
Not all elements evaporate, but many do. Atoms/chrmicals/elements/etc are far more complex than the average education would lead one to believe. Water for example isn't even always H2O, there is H3O water. There's also radioactive water that is physically indistinguishable from water, but you know, radioactive.
Interesting, thank you!