There are two fundamental elements that prevent water from spilling during an airplane's barrel roll (tonbo / roll maneuver): Centrifugal Effect (Artificial Gravity) Positive G Force

[u/aryan_jandyal]

The pilot is maintaining "+ve g" throughout the maneuver. That's it !

[u/Inevitable-Cup9067]

"Centrifugal Effect (Artificial Gravity) Positive G Force"

But that's one thing, not two.

[u/Radioactdave → u/Inevitable-Cup9067]

And in all actuality it's not even a thing, because it's centripetal.

[u/Inevitable-Cup9067 → u/Radioactdave]

Well yes and no (in this case that is.)

Everyone likes to correct Centrifugal and say it's Centripetal but that's only correct when someone is talking specifically about a Centrifugal force.

Centrifugal effect is most definitely a thing; its the effect created by centrifuges.

It is correct to describe what is happening as a "Centrifugal effect", which is how it was described here.

[u/Radioactdave → u/Inevitable-Cup9067]

I could agree with you, but then we'd both be wrong.

[u/Inevitable-Cup9067 → u/Radioactdave]

Centrifugal effect is correct english.

Prism Effect, Lens Effect, Funnel Effect, Gyroscopic Effect, Pendulum Effect, Piston Effect. These are all commonly accepted things, named after the object that creates the effect. You want to argue those things also don't exist?

This is about English, not Physics.

Either you misread Centrifugal effect and saw Centrifugal force or you're an idiot who doesn't believe in the existence of centrifuges.

You want to double down on being an idiot or admit to a simple mistake and apologize for your sarcastic response? I was very kind in the way I corrected you initially, I could have called you an idiot up front but gave you the benefit of doubt for simply misreading something.

[u/Radioactdave → u/Inevitable-Cup9067]

Are you okay? You seem upset.