this post was submitted on 04 Jun 2026
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Shitty Ask Lemmy

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[–] pirat@lemmy.ml 4 points 1 month ago (1 children)

as someone else ready said you don't lose physical volume when you take a leak, just mass. Since water displacement is a volume thing not a mass thing it would absolutely rise.

[–] mech@feddit.org 2 points 1 month ago (2 children)

you don’t lose physical volume when you take a leak

So what fills the volume in place of the pee?

[–] AnnaFrankfurter@lemmy.ml 1 points 1 month ago

Piss disc ofcourse

[–] pirat@lemmy.ml 1 points 1 month ago* (last edited 1 month ago)

I don't think anything 'fills' the physical volume internally when you empty your bladder. I think this doesn't affect the volume your body takes up in a tub.

if you had a water balloon in a semi-rigid cylinder that doesn't touch the internal walls of that cylinder, and the balloon is filled with water, and them decided to empty that balloon of water, does that change the volume of the cylinder?