Blackholes

[Gray Fox]

The singularity is that point in the black hole in which matter is compressed to an infinitely small dot. So, a singularity and a black hole are not two separate things.

As far as I know black holes slowly "evaporate". The eject once in a while an atom, and they keep doing it until the gravitational well of the black hole gets weaker and weaker until in finally vanishes.

But wait wouldn't the gravity of a blackhole comprass all it's matter to the singularity no matter how much material it attracted, hence a blackhole would never grow.
And again about the matter escaping, how does that happend, do we know. How come the black hole did not crush the atom, I would think only energy could possible escape from a blackhole. Or does it exacape because it´s a heavy atom but traveling at almost the speed of light.

 

[dream431ca]

Most people have got Black holes discribed pretty good. Just a star that collapses on itself and creates so much gravity nothing can escape. Most people say that the Black hole is a singularity which means an infinitly small spot, that used to be a star...this is just a theory though, and nobody knows what is at the center of the black hole. A more reasonable theory is a super giant collapses to the size of earth or smaller..but not into a singularity.

 

[Darkwolf]

A black hole is a 'ball' of matter so dense that a black hole 1 nano meter wide contains roughly 1 gogol of atoms (generally helium). The huge gravitational pull generatated by this is a reletavly small feild in comparison to normal stars. (Although if our sun becamea black hole it would start to suck the gas off Jupiter)

However it is strong enough to compress anything it draws in to a size so small it would make no noticable difference to the size of the hole itself.

So basically a b;ack 'hole' is just a name given to it, when it is still a ball of matter, yet immensly small. Everything else has been highlighted... I think...

 

[Solaris]

Keep it civil, guys.

You know your a nerd when a girl has to tell you off becuase your debate on Quantam Theory is getting too heated.



<3

 

[Raziaar]

I am offended by the term 'blackhole'. Lets use the politically correct term "Gravitational Matter Sink" instead.


Seriously though, i'm surprised politically correct people haven't attacked blackholes yet.

I'm confused about black holes... are they just a theory, or do we have absolute undeniable proof that they exist?

 

[Solaris]

We're pretty certain.

 

[Darkwolf]

Yes. Ok well there is one astral body (a gas giant, somewhere around Oberon) that is being syphoned into a funnel then 'dissapearing' it can only be assumed that a black hole is draining the planet away.

 

[Parrot of doom]

Its important at this moment to stress that if our own sun were to suddenly shrink and become a black hole, the solar system would still orbit quite normally, albeit minus any of the effects of solar radiation. The Earth wouldn't suddenly get pulled in.

Mind you I'm not sure the sun has enough mass to become a black hole.

 

[Raziaar]

Its important at this moment to stress that if our own sun were to suddenly shrink and become a black hole, the solar system would still orbit quite normally, albeit minus any of the effects of solar radiation. The Earth wouldn't suddenly get pulled in.

Mind you I'm not sure the sun has enough mass to become a black hole.

That sun is enslaved for another few million years, to provide us with light... <tightens the manacles on the sun>

 

[kirovman]

For the sun as a black hole, it's only when you approach the sun's original radius that gravitational effects will start to get abnormal.

Also, Black Holes can evapourate via Hawking radiation (so in effect, theyre not completely black)

 

[TheHamster22]

A quick point, and question:

-A black hole can grow because the amount of mass inside the singularity is increasing, thus the event horizon of the black hole grows. This means the distance at which it can cause light to fall into it increases.

-Our Sun will never become a black hole, when our Sun dies it will simply become a Red Giant then solar winds will blow away the outer layers until it is left as the glowing core: A white dwarf.

-The universe will likely become a series of black holes everyone eventually, however these as stated will eventually evaporate leaving simply energy, the cold slow death of the universe ;(

And my question is, is there any proof that the matter is all contracted to a pea sized singularity at the middle of the event horizon of a black hole? Is it not possible that there is a solid ball of matter just abit underneath the event horizon?

 

[Llama]

But that means matter is sucked into... UNmatter.

See what i'm saying.

WHAT exactly is a black hole? You explained (very well I might add) what CAUSES them, but WHAT is one?

A hole in space. Almost Literally.

TheHamster, no one has any way of telling. Hell, the singularity could lead to an alternate universe for all we know, but you cant prove anything.

 

[Remus]

That sun is enslaved for another few million years, to provide us with light... <tightens the manacles on the sun>

No actually it is gonna last about 5 billion years or so more:cheese: . By then we won't need it anymore cause we'll be outta here man:smoking: .

 

[Llama]

Unless we become robots...that'll extend the lifespan a bit

 

[Viperidae]

Also, Black Holes can evapourate via Hawking radiation (so in effect, theyre not completely black)

Yes but at a very slow rate. It would take something like 10^31 years for one to evaporate, or basically longer than anything ever imagined. And if the universe will collapse back on itself, which won't take very long (definately less than 10^31 years), it won't matter if they evaporate or not.

 

[Ren.182]

Here comes my explaination

A black hole is a small (tiny?) ball of matter that spins very quickly. Anything that comes within its gravitational pull gets sucked in and compressed onto/into the matter. Light cannot bounce off it because it spins too fast for the light to eascape, essentially it sucks light in.
Basically you're screwed if you meet one

btw, didn't some scientists create a black hole in a lab once? :?

 

[Pesmerga]

Where the hell are the white holes. Minorities get all the attention.

 

[spookymooky]

So, do to my limited understanding of physics, I'm going to guess that if a black hole is a whole lot of protons and electrons spinning very fast, it's also going to be giving off one hell of a magnetic field, no?

 

[Seagull]

We really don't know anything about black-holes, just theories I think.

 

[DeusExMachina]

I always had this vision of getting sucked through a black hole and ending up in a void of white.

But, I doubt that's what's in a blackhole...

 

[hungryduck]

I bet that flying spaghetti monster could eat a damn blackhole and not have to poop afterward.

 

[Fliko]

A blackhole is the result of pollution from Earth... Atleast, in the politically correct way.

 

[Ennui]

I bet that flying spaghetti monster could eat a damn blackhole and not have to poop afterward.

rofl, did you think of that yourself? that was ridiculous.

 

[TheSomeone]

You don't know how intelligent I am and likewise, I don't know how intelligent you are. So let's not make any assumptions eh?

lol, I was just pointing you obviously havent' learned about relativity, hence anything related to relativity iz too complicated fo yo brain. Yes?

 

[spookymooky]

lol, I was just pointing you obviously havent' learned about relativity, hence anything related to relativity iz too complicated fo yo brain. Yes?

no.

Additionally, Would it be possible to make a generator by simply spinning a copper ring around a black hole?

 

[TheSomeone]

no.

Additionally, Would it be possible to make a generator by simply spinning a copper ring around a black hole?

Hahahahha the GENIUS IDEA.

 

[hungryduck]

rofl, did you think of that yourself? that was ridiculous.

of course I did, if I can eat raw fish for 3 hours while pushing a penguin through a maze in a shopping cart half filled with old issues of Macworld then I can think that up myself. GarwsH!

 

[sinkoman]

of course I did, if I can eat raw fish for 3 hours while pushing a penguin through a maze in a shopping cart half filled with old issues of Macworld then I can think that up myself. GarwsH!

Go away.

Interesting conversation here, take your spam elsewhere.

At TheHamster: I don't believe there is any electromotive force within black hole, therefore no magnetism.

 

[spookymooky]

Wait, I'm "TheHamster" now?

Anyways, doesn't moving charged particles, i.e. either a rotating singularity, or the particles themselves are simple spinning equal magnetism?

 

[sinkoman]

Wait, I'm "TheHamster" now?

Anyways, doesn't moving charged particles, i.e. either a rotating singularity, or the particles themselves are simple spinning equal magnetism?

If I remember correctly from my electrical studies, magnetism is directly correlated to electromotive force. No electromotive force, no magnetism. No magnetism, no electromotive force.

Electricity is the movement of electrons if I remember right. I don't believe that the matter condensing would actually create any electricity. Energy perhaps, but not electricity.

I COULD be infinetly wrong though. As I said, I haven't taken physics yet

 

[JFry]

no.

Additionally, Would it be possible to make a generator by simply spinning a copper ring around a black hole?

The third law of physics, known as the sour grapes law, clearly states that the energy required to keep the copper from collapsing into the hole would be greater than the energy gained from the generator.

 

[spookymooky]

The third law of physics, known as the sour grapes law, clearly states that the energy required to keep the copper from collapsing into the hole would be greater than the energy gained from the generator.

good point.

 

[Laivasse]

The third law of physics, known as the sour grapes law, clearly states that the energy required to keep the copper from collapsing into the hole would be greater than the energy gained from the generator.

What about a perpetual motion machine created by feeding a bit of string into a black hole?

 

[sinkoman]

What about a perpetual motion machine created by feeding a bit of string into a black hole?

Why not just flick a quarter in outer space?

Perpetual motion, yes?

Well, maybe not PERPETUAL, but fricken long.

But i'd imagine the string would slow down so much that you'd never see it go into the blackhole completely.

 

[Laivasse]

I meant something that could be converted into usable energy - it was only a jokey suggestion, but well...

I thought a bit more about it and of course there's the little matter of having enough string. My borked mind envisaged some kind of machine that wove a string just fast enough for it to be spooled out to the black hole - but then you'd have to have a device which weaves together matter at something approaching the speed of light. Which is where the 'sour grapes' rule comes in I suppose.

I can understand the whole concept of time slowing down for the string at the event horizon, but not how relativity figures in. Just because it would never actually reach the black hole, does that mean we would see an unmoving string at this end?

 

[sinkoman]

I meant something that could be converted into usable energy - it was only a jokey suggestion, but well...

I thought a bit more about it and of course there's the little matter of having enough string. My borked mind envisaged some kind of machine that wove a string just fast enough for it to be spooled out to the black hole - but then you'd have to have a device which weaves together matter at something approaching the speed of light. Which is where the 'sour grapes' rule comes in I suppose.

I can understand the whole concept of time slowing down for the string at the event horizon, but not how relativity figures in. Just because it would never actually reach the black hole, does that mean we would see an unmoving string at this end?

Hmm, not positive, but i'm pretty sure yes.

You'd still only get like, point zero zero zero zero zero zero one horsepower out of that string.

Yes, your mind is broken.