How level is "level" to the naked human eye? (lemmy.ml)

submitted 6 days ago by [email protected] to c/[email protected]

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I was putting up some wall decorations earlier today and was painstakingly realigning everything until it looked level to my eyes. It might be just a hair off, but if I don't correct it, I'll see the misalignment almost instantly and get bothered for the rest of time until I fix it. Has anyone investigated, or is there literature on the minimum perceptible angle from level to the naked eye?

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[-] [email protected] 5 points 6 days ago

It depends on the distance to object. Also the distance between the object and something to compare it to.

this post was submitted on 11 Jun 2025

78 points (98.8% liked)

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