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submitted 4 days ago by monovergent@lemmy.ml to c/asklemmy@lemmy.ml

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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[-] gazter@aussie.zone 1 points 4 days ago

Yeah- Square and level are two different things. I can get a cube and rotate it any way, opposite faces will still be square to each other (technically parallel) despite not being level.

Interestingly, two perfectly vertical walls cannot be square to each other.

[-] SpaceNoodle@lemmy.world 2 points 3 days ago

What do you mean re: the walls?

[-] sxan@midwest.social 1 points 3 days ago* (last edited 3 days ago)

The Earth is curved.

At least, I assume that's what they meant.

[-] SpaceNoodle@lemmy.world 2 points 3 days ago

Oh, you're one of those round-Earth nutjobs?

[-] sxan@midwest.social 2 points 3 days ago

Ha! No, what whackjobs those people are. No, clearly the Earth is donut-shaped. This is obvious, because the Bible says so. The lizard people are suppressing the information, except on the internet. And talk radio. And tabloids.

Donut shaped!

this post was submitted on 11 Jun 2025
77 points (97.5% liked)

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