this post was submitted on 09 Jun 2025
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Science Memes

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Baldur's Gayte (mander.xyz)
submitted 2 weeks ago by [email protected] to c/[email protected]
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[–] [email protected] 1 points 1 week ago (1 children)

A CD is clearly homotopic to a torus, though...

And the walls of a straw do have thickness...
A straw goes:

Gas - solid - gas - solid - gas

[–] [email protected] 3 points 1 week ago (1 children)

If solid torus yes, if just the regular torus (surface of the solid torus) no. CD is homotopic to a circle and so is a solid torus.

[–] [email protected] 2 points 1 week ago

OK, that's my ignorance. I didn't realise toruses were usually hollow.

Thank you for letting me know, you're right and I've learnt something.