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this post was submitted on 26 Aug 2024
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I learned that the oxygen around the earth is about as thick as a coat of paint on a pool ball, relatively.
I'm not sure how accurate that is.
Space is about 100 km up, on a sphere that has a radius of 6000 km, so some 2% is air.
A pool ball has a radius of 30 mm roughly, so 2% of that is 0.6mm. Seems like a very thin coat of paint to me, but roughly correct.
A coat of paint is like 0.045mm thick
"One thin layer"
https://i.ytimg.com/vi/m3p_VuPIS2c/hqdefault.jpg
https://www.reddit.com/media?url=https%3A%2F%2Fi.redd.it%2Ftptwat5hxsj71.jpg
Not on the walls I've painted. I don't know about pool balls, but I'd imagine they need a solid layer of paint too, otherwise they'd flake in no time with the abuse they get.
I was once told that if you scaled the earth and a glass marble to be the same size, the earth would have a much smoother surface.