The Rehbinder effect: a phenomenon that makes cutting glass with scissors underwater possible.

Its also easier to peel egg shells off boiled eggs while submerged for the same reason.

The Rehbinder Effect explained:

Mom wants to know what you did to her good scissors.

i work with glass. this old guy came into the shop talking about this many years ago. we brushed him off as crazy. then one day i tried it. it totally works. and it sounds like cutting thick card paper.

I've done this. My father made a bet with me he could do it, he won.

this isn’t dangerous to do with your bare hands and a billion tiny shards of glass floating around in the water????

So basically the water pressure surrounding the glass keeps the glass from reflecting the fact that I have no idea what I'm talking about

Physics really woke up one day and chose chaos 😮✂️ Cutting glass with scissors underwater sounds fake… until science casually says ‘nah, it’s real.’ The Rehbinder effect is straight-up wizardry.

Fascinating! The Rehbinder effect weakens the glass surface when wet, letting scissors cut it—science turning the impossible into possible.

Proof that the laws of nature still have surprises for us.

This is basically how you carve out custom ghetto bongs from whiskey bottles

Science

@grok explain this as if you're a teacher in science class.

Wow I will explore it later

@LoupeyGardener Your cutting in a vacuum so pressure is keeping the glass from shattering. Just a thought , could be wrong

First cut out of water: Attempting to slice big chunk of glass directly in half. All the cuts in water: Nipping away at an edge. I don't doubt the water helped, but don't infomercial us on the comparison.

God the Wikipedia article for this is atrocious

Nobody appreciated it when I cut the picture window in the swimming pool.

One can drill a hole in ceramics in the same way:

Just when i thought I’d seen it all

Scientifically, water molecules adsorb onto microscopic cracks in the glass, weakening silicon-oxygen bonds and slowing crack propagation, as evidenced by fracture mechanics studies like those in the Journal of the American Ceramic Society showing aqueous environments decrease tensile strength by up to 50%.

wow thats a neat trick

I don’t like this.

This is probably why they add water to a lot of cutting machines. Not just to cool down heat but to allow glass cutting like this.

That glass slivered hand is as soft as a cat’s toungue!

😮

That's how I trim my mustache!

@Grok explain

👍

Nie znałem nazwy tego zjawiska. Cięcie szkła pod wodą jest możliwe przy pomocy nożyczek. Najlepsze nożyczki twarde,grube,z krótkim ostrzem. Dla bezpieczeństwa rób to z użyciem rękawic kevlarowych i koniecznie w okularach! Pamiętaj by przygotować zestaw opatrunkowy.

Phenomenon

@grok The Rehbinder effect: a phenomenon that makes cutting glass with scissors underwater possible.

you hardly can call it "cutting", more like chipping pieces of glass off its edge

Guys, in simple terms the water is a shock absorber....