Post #1810414

2026-04-29 23:11 UTC

There was a question on twitter about what happens if you go through a portal with one curved part. Here are the simulations. In the first one we have a very rigid object going through such portal with a little push. It&#39;s almost fine in the end. In the second one we have a very flexible jelly-like object going through very very curved portal. It&#39;s also fine. But in the third one we have very rigid object going through very curved portal. It can&#39;t go by itself, so we have to push it with a wall, and it just rips apart... Don&#39;t go through strange portals, guys... The way it works is just a scanner-printer portal (I described this concept in my most popular video) with different entrance and different exit. It violates the surface irrelevance axiom, because with different surface it acts differently, so the transformation that it does is not equivalent to flat space. You would feel with your body when you are going through such portal. And the image would be distorted too, like through some lens. Some people propose to call them &quot;portal lenses&quot;. Maybe I will make a video about them one day with all these animations and simulations. What else would you like to see with such portals?

Replies (9)

@richter@calamity.world 2026-04-29 23:36

@optozorax@mathstodon.xyz Guardrails and safety equipment, as they at least have relevant surfaces to demarcate.

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@ephemeromorph@topspicy.social 2026-04-30 00:21

@optozorax@mathstodon.xyz The first animation looks like how it feels to do a tough poo.

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@azaliz@eldritch.cafe 2026-04-30 07:13

@optozorax@mathstodon.xyz i love these!

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@efi@chitter.xyz 2026-04-30 08:48

@optozorax@mathstodon.xyz shower curtain technology has gone so far

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@beeps@social.beeps.gay 2026-04-30 10:47

@optozorax@mathstodon.xyz This makes me think about what happens on an atomic level. Like, if you shoved your hand into a portal that is slightly concave on the other end then the atoms in your hand are gonna come out closer to one another than before, right? Accidental nuclear fusion?

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@WooShell@chaosfurs.social 2026-04-30 11:22

@optozorax@mathstodon.xyz OSHA advice: Always verify your portals are straight on both sides before walking through.

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@RefurioAnachro@mathstodon.xyz 2026-04-30 12:55

What if both portals were shaped like the orange one in the last example. I have watched your work for a while, and I think I have developed an intuition by now. It's still so much fun to look at your results. @optozorax@mathstodon.xyz

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@darkrat@chaosfurs.social 2026-04-30 13:36

@optozorax@mathstodon.xyz "Oh man, there's a great youtube channel that goes into all these weird portal stuff" *looks at the name* "ah. well, I think you know that one" :blobratheart:

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@RobJLow@mathstodon.xyz 2026-05-05 21:14

@optozorax@mathstodon.xyz Can't help feeling that even a relatively slight curvature difference between the entrance and exit would rupture chemical bonds and play hob with things like brain and other organ structure.

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