Sphere eversion : cut open version of the teaser

Since I cannot find enough free time to produce a movie, I finally decided to stop retaining this short clip produced by Jos Leys and myself in July 2016. There we better see what was hidden in • Sphere Eversion : teaser

[@BenDanYt]

I was ready to say "watch out, that's a sharp bend" but there weren't any sharp bends, great job!

[@emanuelegiunta7934]

Is this it? Is this a sphere turning inside out?

[@BenDanYt]

Yes

[@ArnaudCheritat]

@@BenDanYt Emanuele is citing the movie "Outside In". Which I recommend by the way.

[@BenDanYt]

@@ArnaudCheritat i already saw it and it's awesome! "That wasn't easy to understand, was it?"

[@user-mh2bw4hu3o]

Like a basketball.

[@Plumbasket]

watch the huggbees version ​@@BenDanYt

[@Em-td4kc]

0:35 if you pause it here you get half a blue m&m

[@Tender_BootyStrokes]

Thanks man

[@luftwaffle3766]

There are 2 types of people

[@miguelbaltazar7606]

Math teacher: aight this is gonna be an easy lesson
The lesson:

[@NectarNapper]

Im so sorry for every doubting you

[@tristandreemurr8755]

My head hurts now. Thank you.

[@abhishek.chakraborty]

Thanks for making this elegant Animation 👏👏🙏

[@jackys_handle]

This is the easiest method to visualize i have seen yet, tho the beguening is a bit wacky

[@Konyad]

What program do you use for that?

[@ArnaudCheritat]

Rendering was done in POV-Ray by Jos Leys from a sequence of .obj meshes produced by a C++ program I wrote

[@jesseyahiaoui395]

@@ArnaudCheritatNice work

[@jeanllup6150]

Genial !!

[@CherryThGreat]

What did I watch and why do I love it

[@Dubito_Fluffywolf]

I believe a half sphere turning inside out

[@sneedle252]

As cool as this is, has anyone found an application for this, either in a physical world problem, or in another part of math?

[@inorganiccarbonate1697]

I mean... the material of the sphere itself is this abstract, fictional "fabric" that can pass through itself, bend and twist, but cannot be creased without destroying it. So, uh... maybe not.

[@ENCHANTMEN_]

Topology has a bunch of weird applications in other branches of math you wouldn't expect

[@Manuel71]

I don't think it has any practical applications. They may appear in the future, you never know, but it seems very unlikely.

[@Sinzari]

The rules describe the rules of topology, and like all theoretical mathematics, topology has many practical applications in completely unexpected places.

[@Hacktest2014]

Me watching old inside out
Got spark
And puching each other
And found out
THEY SHARP BEND

[@miko_kurehaakacb6805]

Do it as a whole sphere, but semi-transparent.

[@ArnaudCheritat]

The attempts I made at semi-transparency on simpler situations are already incomprehensible

[@TheFunFactoryChannel]

You can flip it inside out by pushing bottom part up

[@TheLegonaut]

Big brain right here

[@thecaketubby5764]

because in the original its a full sphere and it creates a crevice

[@vincentfisher950]

Just poke a hole through in it and pull it through

[@darkjadesgame]

​@@vincentfisher950 nope. We are trying to turn a FULL Sphere outside in, no holes or anything.