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Do things really need to be limited?
June 4, 2015 at 12:54 pm
(This post was last modified: June 4, 2015 at 1:22 pm by Mental Outlaw.)
So I was recently watching a documentary about black holes, and Michio Kaku basically said that the reason we can't understand black holes is because when you use relativity or quantum physics to calculate their mass and or gravity you end up with infinity, you also end up with infinity when you calculate the size and density of the singularity because its infinitely small. And apparently infinity is a no no when it comes to math involving bodies in space. So since I'm nowhere near being a math expert I would just like to know (in terms I can understand  ) why is it that things like a black holes gravity, density, and mass cannot be infinite?
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RE: Do things really need to be limited?
June 4, 2015 at 1:01 pm
(This post was last modified: June 4, 2015 at 1:03 pm by robvalue.)
I suppose if the gravity was infinite, it would no longer matter how far away an object is from the black hole, the pull would be an infinitely large force. The only thing stopping the whole of the rest of the universe being swallowed up into it instantly would be the "speed of gravity". No other finite gravities would matter anymore.
However, if there were competing black holes all with infinite gravity, everything would get sucked into the nearest one.
Since none of this has happened, they can't be infinite
I just made all that up, I'm not qualified to answer. But that is my guess, based on observation. What the theoretical problems are I have no idea. E=m*c*c, it would be an infinite amount of energy. Not cool I guess.
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RE: Do things really need to be limited?
June 4, 2015 at 1:19 pm
(June 4, 2015 at 1:01 pm)robvalue Wrote: I suppose if the gravity was infinite, it would no longer matter how far away an object is from the black hole, the pull would be an infinitely large force. The only thing stopping the whole of the rest of the universe being swallowed up into it instantly would be the "speed of gravity". No other finite gravities would matter anymore.
However, if there were competing black holes all with infinite gravity, everything would get sucked into the nearest one.
Since none of this has happened, they can't be infinite
I just made all that up, I'm not qualified to answer. But that is my guess, based on observation. What the theoretical problems are I have no idea. E=m*c*c, it would be an infinite amount of energy. Not cool I guess.
That sort of makes sense, but apparently there is a super massive black hole at the center of most galaxies, and the gravity is strong enough to keep the entire galaxy orbiting it, so even Earth is affected by the black hole at the center of the milky way. I would also think that the universe expanding is the reason why a blackhole can't just swallow everything. Black holes also expel beams of energy which I guess is just the matter they swallowed up converted into energy to keep things balanced.
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RE: Do things really need to be limited?
June 4, 2015 at 1:24 pm
(This post was last modified: June 4, 2015 at 1:25 pm by robvalue.)
Hmmm, yeah. It's all very interesting and I really don't know enough about it. I wouldn't pay too much attention to what I have to say hehe.
I seem to remember hearing something about the universe stretching out rather than actually expanding...
I've got like 7 jigsaw pieces and no idea how many there are in total or what picture I'm meant to be making.
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RE: Do things really need to be limited?
June 4, 2015 at 1:31 pm
Zero's and infinities always bring me down . . .
The granting of a pardon is an imputation of guilt, and the acceptance a confession of it.
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RE: Do things really need to be limited?
November 24, 2015 at 5:25 pm
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RE: Do things really need to be limited?
November 24, 2015 at 5:27 pm
Starting off you few first minutes back be necroposting will get you talked about.
Aloha.
The granting of a pardon is an imputation of guilt, and the acceptance a confession of it.
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RE: Do things really need to be limited?
November 24, 2015 at 5:28 pm
Bad corpse thumper >:c
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RE: Do things really need to be limited?
November 24, 2015 at 5:50 pm
(This post was last modified: November 24, 2015 at 5:50 pm by Alex K.)
I completely forgot to pour my infinite wisdom all over this thread back then. How embarrassing.
The fool hath said in his heart, There is a God. They are corrupt, they have done abominable works, there is none that doeth good.
Psalm 14, KJV revised edition
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RE: Do things really need to be limited?
November 24, 2015 at 5:55 pm
Well now you have a second chance.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Albert Einstein
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