Torus eversion: turning the torus inside out

[BRyanS72]

Wait a minute, one video said that turning a circle inside out was impossible. But here, a torus certaintly is similar, and yet it's turning inside out without any "3-D" rotations!

"Am I supposed to believe that you can turn this circle inside out, but not that other circle?"

[Buggy793]

@BRyanS72

The difference is that the torus has a 3d part that allows one small piece to be turned inside out, so the rest follows easily. Just watch the video again, and you can see the difference.

[BRyanS72]

@Buggy793 Is the 3-D part like the thickness of it? because I though that a circle could have thickness also.

[Buggy793]

@BRyanS72

A circle is infinitely flat, so it has no 3d part. It is also infinitely thin, because it is essentially a line segment that is connected to itself at both ends. A line has no volume or ares, so neither does the (circumference) of a circle.

The middle of a circle is not what is being considered. ONLY the edge.

It's really cool when it finally clicks in your mind, though! : )

[godwin972]

@BRyanS72 Well, there are moments where depth is needed to turn the torus inside out.

[julianportis1]

amazing concept when applied to physics and dynamics of the structure of our spacetime vacuum. BUT I would like to note the masonic symbolism in the background animation . lol.. seriously tho. that's not an accident.

[jackvanwijk]

Great work, very clear!

[Andrewvw100]

Whet

[nfwu]

@solidus667 Assume that the material can pass through itself. Another assumption made is that the material cannot withstand creasing, so any folds destroys it.

[pootnikalexander]

An excellent solution can you do it across the equatorial plane using the same principle?

[gravitymindofgod]

I see Truncated time also will also seek stability within the appropriate geometry.

[CUB3FR34K]

Very impressive!

[YoeriYoeri]

that makes perfect sense actually. good vid!

[dragoo994]

beautiful!

[wvb93]

nice

[karl0bar]

coolio

[natenaterson]

Oh, whoa

[TheIndigestableSkeet]

da fuck?

[BlazeReap2]

Impressive

[absulitcr]

weird dude

pretty Mathematical