this post was submitted on 05 Aug 2024
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[–] egg1918@hexbear.net 8 points 11 months ago (1 children)

I wonder how much surface area of skin a person would need to sustain themselves through photosynthesis (assuming the skin can photosynthesize).

[–] HotAtForty@hexbear.net 7 points 11 months ago (1 children)

Some very rough back of the envelope calculations with major engineering math (eg consider the human to be a cylinder and efficiency is 100%, even overnight and ignoring the fact half of you is not facing the sun at all)

https://worldbuilding.stackexchange.com/posts/38400/revisions

12x human surface area is a very generous lower bound

[–] egg1918@hexbear.net 4 points 11 months ago (1 children)

Lmao fantastic, this is exactly what I was looking for, thank you!

I'm trying to picture what that abomination would look like. We'd need like giant leaf wings basically.

[–] HotAtForty@hexbear.net 3 points 11 months ago

Or a nice big warm rock to sleep on