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[-] underisk@lemmy.ml 10 points 1 day ago* (last edited 1 day ago)

Bismuth crystals don't form like that in nature. All of those are man-made.

[-] Appoxo@lemmy.dbzer0.com 6 points 17 hours ago
[-] SaveTheTuaHawk@lemmy.ca 3 points 17 hours ago
[-] Appoxo@lemmy.dbzer0.com 2 points 16 hours ago

But do they form like cubes in nature like pyrite does?

[-] OhStopYellingAtMe@lemmy.world 8 points 1 day ago

Wombat poop is cube shaped.

[-] tomenzgg@midwest.social 6 points 1 day ago

…it's, like, an hour before I've got to head to bed; you can't be giving me rabbit-holes to head down.

[-] EtnaAtsume@lemmy.world 11 points 1 day ago

What science teacher would say that?

[-] Mpatch@lemmy.world 7 points 1 day ago

Lol had a grade 4 teacher tell me once that circles aren't natural and an invention of man kind. I figure she must have been a werewolf or something. Never actually seen a full moon or doesn't remember seeing it.

[-] turdas@suppo.fi 1 points 1 day ago

The moon isn't perfectly round, also if it were it would be a sphere not a circle.

[-] Mpatch@lemmy.world 5 points 18 hours ago
[-] turdas@suppo.fi 1 points 18 hours ago

Found someone who didn't finish high school.

[-] rockerface@lemmy.cafe 5 points 21 hours ago

The moon is round enough that a lot of circle based math works on it

[-] turdas@suppo.fi 1 points 18 hours ago* (last edited 18 hours ago)

That just depends on what your tolerance for error is. For a lot of purposes your head is round enough that assuming it's perfectly round still works out to be accurate enough. Doesn't make it round.

it was explained in an anime called Ruri Rocks.

it cristalizes into a cube as it cools. that's normal, but the cristalisation is exothermic. this makes the areas in the middle of the faces hotter than the edges, so it cannot cristalize in the centre of the faces and only on the cube edges.

it's explained better in that anime.

[-] paraphrand@lemmy.world 2 points 1 day ago

Yeah, I think it’s probally art teachers that would have more of a use for such a statement.

watch Ruri Rocks.

they explain why they form like that.

great anime

this post was submitted on 01 Jul 2026
77 points (100.0% liked)

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