Is A Black Hole's Density Infinity Or Just 1/0 (??)

Sort:
Oldest
One_Zeroth

Being that 1/0 is the multiplicative opposite of 0, and not Infinity itself!

A black hole has an infinite density; since its volume is zero, it is compressed to the very limit. So it also has infinite gravity, and sucks anything which is near it!

https://physics.stackexchange.com/questions/25802/why-does-a-black-hole-have-a-finite-mass#:~:text=A%20black%20hole%20has%20an,anything%20which%20is%20near%20it!

Eldred_Woodcock
One_Zeroth wrote:

Being that 1/0 is the multiplicative opposite of 0, and not Infinity itself!

A black hole has an infinite density; since its volume is zero, it is compressed to the very limit. So it also has infinite gravity, and sucks anything which is near it!

https://physics.stackexchange.com/questions/25802/why-does-a-black-hole-have-a-finite-mass#:~:text=A%20black%20hole%20has%20an,anything%20which%20is%20near%20it!

You're link says that volume is zero but mass is finite and therefore has finite gravity. What is your reasoning for contradicting them?

One_Zeroth

I asked a question without disagreeing with post you mentioned.

Nope. The singularity is a point where volume goes to zero, not where mass goes to infinity.

It is a point with zero volume, but which still holds mass, due to the extreme stretching of space by gravity. The density is massvolume����������, so we say that in the limit volume→0������→0, the density goes to infinity, but that doesn't mean mass goes to infinity.

The reason that the volume is zero rather than the mass is infinite is easy to see in an intuitive sense from the creation of a black hole. You might think of a volume of space with some mass which is compressed due to gravity. Normal matter is no longer compressible at a certain point due to Coulomb repulsion between atoms, but if the gravity is strong enough, you might get past that. You can continue compressing it infinitely (though you'll probably have to overcome some other force barriers along the way) - until it has zero volume. But it still contains mass! The mass can't just disappear through this process. The density is infinite, but the mass is still finite.

Gregg-Turkington

It could be either considering that black holes do not exist.

Eldred_Woodcock

You said a black hole has infinite gravity. It does not. The article you linked explains that.

One_Zeroth

It was a multi contributed online thread, There is no article.

LITO13mtz
Mhm 🧐
Eldred_Woodcock

Well then. they explained why a black hole does not have infinite gravity.

One_Zeroth
Eldred_Woodcock wrote:

Well then. they explained why a black hole does not have infinite gravity.

Quote the exact text that explains that, as you say.

Eldred_Woodcock

Here's the very first sentence of your link. Finite mass means finite gravity.
"I mean besides the obvious "it has to have finite mass or it would suck up the universe."

Here's part of Spencer Nelson's answer: It is a point with zero volume, but which still holds mass, due to the extreme stretching of space by gravity. The density is $\frac{mass}{volume}$, so we say that in the limit $volume\rightarrow 0$, the density goes to infinity, but that doesn't mean mass goes to infinity.

This answer is from Dan: "So everybody seems to fall into a logical trap here.Black holes don't have infinite density at their singularity/center. This infinite density business is the physics way of saying that we don't know what is going on."

Eldred_Woodcock

You keep trying to apply a limited knowledge of math to problems you don't understand. It's not working.

Qinshu111_the_chess_panda

Fun fact singularity’s aren’t proven to exist they are just a theory+no one cares

Qinshu111_the_chess_panda

It could be a quark sized particle

Forums
Forum Legend
Following
New Comments
Locked Topic
Pinned Topic