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At the very center of a black hole would the gravitational field strength be zero. I'm just thinking of Gauss's law. But I Know that the laws of physics break down at the singularity, but it seems like it would or am I crazy?
I didn't realise this. Rather interesting.If you want to try and make some sort of argument like this, you must first acknowledge that all the mass is concentrated within a point at the center of the hole. Therefore, no matter how small you make a sphere, the enclosed mass is the same.
The event horizon has a radius i believe, which grows larger the more massive the black hole is, but the matter itself does not.I didn't realise this. Rather interesting.
I was under the impression black holes had a radius. Sort of like shrinking the Earth down to only a few km or so in size (only with a lot more matter).
I THINK that as the mass of the black hole increases, the event horizon, which is the point where the gravitational influence is too large for light to escape, also increases in radius. Unless I'm wrong, I dont believe that the event horizon is a real thing (IE Physical thing with substance), but merely the point that the gravity becomes too strong for light. Even though the matter would all be in one spot in the center with no real size, the effects of gravity and the radius of the black hole would increase as the mass increased.So is a black hole a ball of compressed matter with a radius?
You are correct.I THINK that as the mass of the black hole increases, the event horizon, which is the point where the gravitational influence is too large for light to escape, also increases in radius. Unless I'm wrong, I dont believe that the event horizon is a real thing (IE Physical thing with substance), but merely the point that the gravity becomes too strong for light. Even though the matter would all be in one spot in the center with no real size, the effects of gravity and the radius of the black hole would increase as the mass increased.
Well, to stretch your brain a bit further, does any particle actually have a "physical size"? If the gravity overcomes the forces holding particles apart, would their wave packets or whatever just start to overlap?I understand the event horizon, I'm referring to the matter itself.
So it's a spot in the middle without real size. Makes sense I suppose... :uhh:
I really don't like talking about the singularity of a black hole, since I think most people thing that it is an ugly object whose singular nature will be removed by an eventual theory of quantum gravity. So just know that these discussions are limited to the classical theory of general relativity...I understand the event horizon, I'm referring to the matter itself.
So it's a spot in the middle without real size. Makes sense I suppose... :uhh:
I didn't realise this. Rather interesting.
I was under the impression black holes had a radius. Sort of like shrinking the Earth down to only a few km or so in size (only with a lot more matter).