this post was submitted on 08 Jul 2026
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They were a big deal! (media.piefed.world)
submitted 1 day ago by The_Picard_Maneuver@piefed.world to c/whitepeopletwitter@sh.itjust.works
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[–] FavouriteShapes@sh.itjust.works 15 points 1 day ago (2 children)

Hell yes i've heard of Evanesence:

[–] Sylvartas@lemmy.dbzer0.com 2 points 19 hours ago (1 children)

Is that how saltpeter forms?

[–] FavouriteShapes@sh.itjust.works 2 points 14 hours ago (1 children)

I think that might be a regional nickname for it - it does indeed form salts which are loosened from the inside of the brick/concrete (both have salts in) by water, and then transported to the outside by the same water.

[–] Sylvartas@lemmy.dbzer0.com 1 points 10 hours ago (1 children)

I can't find anything relating saltpeter to the term "evanescence" but I know it forms due to humidity + capillarity in stone/brick walls (I recently moved into a house that has some so I only recently started learning about this) so I guess it is the same thing. The scientific name for it is potassium nitrate

[–] can@sh.itjust.works 3 points 9 hours ago (1 children)

Efflorescence

[–] Sylvartas@lemmy.dbzer0.com 3 points 7 hours ago

Well that explains it