วีดีโอ

Quite nauseating even on a small screen. I imagine as an installation, being inside it could induce seizures even for non epileptics!

Amazing presentation

F

Okay, so in topology, a surface can pass through itself without invalidating the transformation ? As seen at 0:23. So my dream to "evert" a ballon should still wait ?

This might be easier to follow if the two sides were more different colors (like red and blue) so you can easily tell what's on top; here they're really similar, so it's hard to see what's happening, especially with how it's colored meshing instead of a transparent film.

A life saver ! Now I will evert all my spheres in no time .

“Argh; let me try again”

Why is it so slowww

0:07 b o w l

:0

Are there smooth mappings between sphere eversions?

why did it have to be proved?

こういう生き物いますかね？

Thats more understandable

Still can't understand. Imaging 3D is too difficult for me.

?

“That’s an interesting idea, so it’s against the rules!”

Static charge, once they are at the same potential they unite..

Only in 4D

You did it, you turned a sphere inside out without tearing or creasing it.

Charge

Actual footage of me committing tax eversion

Is there any significance to a sphere turning inside out requiring a temporary Mobius, and a Torus eversion. Obviously there is a Mobius eversion because the sphere has to hit the milestone in order to successfully evert. So what would happen if you applied a Torus eversion to a Mobius strip. Breaks the game surely, but this has piqued my curiosity. Edit: it’s actually an umbilical torus, and there aren’t really any videos like this on them.

Why @0:26 can you suddenly push the blue lines up through the green? Not intuitive. Why couldn't you have just done that at the start without all the twisting?

I don’t understand what’s happening at 0:22 when the blue appears to just expand past the green?

kewl 😎

I still can't understand why there must be no creases or sharp bends. It seems like such an arbitrary rule, no less absurd than imagining a material that can pass through itself and stretch infinitely. Why not just imagine that the imaginary material can be creased???

“Hey? I read somewhere that mathematicians can turn a sphere inside out, whats the big deal? Just poke a hole and pull it through.”

Do you mean inversion?

about as transparent as a cast iron wall, i actually understand the concept less now

Yes, but making it overlap itself is not a possible in the real world. This exists in an abstract space where sometimes single points in the space are actually two points on the object.

your creasing it infinitly tight

"Smiles are like bowls, curving up. *booooooooop* " "Frowns are like domes, curving down. *bopppppppp* " *But there are other points that are neither bowls or domes, they are saddles. *Beeeeeeeeeeeeow* "

This helps a lot! Thank you! From 0:32-0:39 let me understand this better!

Epic!

is there a crease

Thank you for information

So, yeah, you can't do it.

they compenetrate...

I should call her 😔

Use smiles and frowns...

Can someone please do the same thing with an eyeball? Thank you.

Good job

0:17 is where I get lost. I feel like I’m watching a visual representation of what my brain is doing while I am trying to understand this lol.

the soul of phillip j mckraken

you're pinching it infinitely tight

Now do it with a basketball ball then I will believe.

So I guess we all have saw the video, yes?

This is what my dog sees when it sees any mechanism

Are you telling me that you can turn a sphere inside out but not a circle