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

submitted 5 days ago by monovergent@lemmy.ml to c/asklemmy@lemmy.ml

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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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[-] markovs_gun@lemmy.world 3 points 3 days ago

I've been to one of these! There was a hill within the house that is way steeper than it looks and it was super freaky and disorienting. Just being in that place gave me motion sickness

this post was submitted on 11 Jun 2025

78 points (97.6% liked)

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