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Geek Culture / What is a Black hole?

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Matt Rock
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Posted: 8th Mar 2008 01:44
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I think I saw that same special, was it about the Bermuda Triangle and how some whackjob theorists claim there could be a black hole that's causing ships to vanish?

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TheComet
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Posted: 8th Mar 2008 02:45
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I asked my chemist teacher today, how it is, that such a mass and density of a super nova can fit into a little pinprick, and guess what:He didn`t know! I would have thought a chemist teacher would know about how the molecule structure of a black hole is built, but it seems that I know more about them than he does.

Oooooops!!! I accidentally formated drive c.
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Pixelator
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Posted: 8th Mar 2008 03:19
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Chemistry!?!?!?!?!!!?!?!?!?!?!!!?!?! where did you think that one up?

now, i specialize in black holes and gravitational physics and this is what is commonly accepted and has be proven all except a few tiny little things.

black holes are any matter that has an infinite decity and there for infinite gravity

they lead to a place called nothing. it is a place but it doesn't exist. you can go there but nothing can exist there. it is the ____ between universes. it leads there because of a little (or big) rip in space time.

it is hard to say the size because it has a negative radius, something very odd but thats what you get with infinite gravity.

they are made by when a star of enough mass (about 7 solar masses or higher) explodes, but collapses under its own gravity, doing so until space time rips when the mass of the star gets sucked into nothing (which doesn't exist for it is lack of ability to exist and lack of existence) and leaves the rip.

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TheComet
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Posted: 8th Mar 2008 03:27
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Quote: "doing so until space time rips when the mass of the star gets sucked into nothing"


I don`t quite understand that. So, you`re saying, that when a star with the mass of 7 solar masses explodes, it collapses on it`s self(that`s correct)

"until space time rips"

Can you explain that last sentence, please. It`s very interesting.

Oooooops!!! I accidentally formated drive c.
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bitJericho
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Posted: 8th Mar 2008 05:45 Edited at: 8th Mar 2008 05:49
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Quote: "black holes are any matter that has an infinite decity and there for infinite gravity"


Black holes don't have infinite gravity, or else they would have sucked up the universe.

Infinite density != infinite mass. Gravity is based off mass, not density.

F = gravitational force.
D = distance

Quote: "F = G(mass1*mass2)/D squared.

(G is the gravitational constant, which has the same value throughout our universe.) "


http://www.qrg.northwestern.edu/projects/vss/docs/space-environment/3-mass-and-distance-affects-gravity.html




Quote: "Can you explain that last sentence, please. It`s very interesting."


He's talking sci-fi mumbo jumbo.

As for fitting in a pin prick. It's because the atoms are extremely close together. There's huge amounts of space between atoms in a molecule, kind of like on the scale of how far away planets are from each other (though I don't know the exact ratio of space to atom in normal space

Think of taking a giant sponge and rolling it up into a tiny ball, it's like that, only way more compressed.


Hurray for teh logd!
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andrey d
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Posted: 8th Mar 2008 07:00
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Quote: "Proof requires evidence though, so usually a theory is "disproven" with sufficient evidence to do so"

Evidence is something that support a fact. Just too bad that facts seem to change at times.
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TheComet
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Posted: 8th Mar 2008 20:27
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Quote: "Black holes don't have infinite gravity, or else they would have sucked up the universe."


They are sucking up the universe, only very slowly. In the middle of our galaxy are a lot of black holes. We are accelerating towards the center. Of course we will be extinct long before it gets critical...

Oooooops!!! I accidentally formated drive c.
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bitJericho
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Posted: 8th Mar 2008 20:51
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Quote: "They are sucking up the universe, only very slowly. In the middle of our galaxy are a lot of black holes. We are accelerating towards the center. Of course we will be extinct long before it gets critical..."


Actually, the universe is accelerating out. Which in itself is weird, but totally opposite of what you are saying.

http://www2.cnrs.fr/en/45.htm?&debut=160xt/

Where do you guys come up with this stuff :/


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andrey d
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Posted: 9th Mar 2008 01:29
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Quote: "Where do you guys come up with this stuff :/"

Make theories, present them as facts, and presto!
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Dream
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Posted: 9th Mar 2008 11:45
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You do know that scientists dont actually have a clue where we are in the universe and that even though we have these massive telescopes and all we ownly know the universe of 0.001% and thats overall guessing as most of the imfomation takes millions of years just too get too us
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tha_rami
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Posted: 9th Mar 2008 12:24 Edited at: 9th Mar 2008 12:24
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Luckily, we do know the universe is expanding and that according to these theories, ultimately, it'll do exactly as those stars going black hole, and implode on itself.

Most likely, we'll be long extinct before that.


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Venge
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Posted: 9th Mar 2008 15:35 Edited at: 9th Mar 2008 15:36
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We've only got 5 billion years before our sun dies. Hopefully we'll have moved to a different solar system by then.

EDIT: Just realized how well my sig fits with this thread..Scary

There are over 100 billion galaxies in our observable universe, each containing up to a trillion stars.

Feeling small yet?
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Insert Name Here
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Posted: 9th Mar 2008 16:24
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We've only got one year before we all die out in some huge nuclear war...

Lee Bamber - Blame Beer
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david w
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Posted: 9th Mar 2008 18:05
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A nuclear war wont kill everyone.
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TheComet
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Posted: 9th Mar 2008 18:20 Edited at: 9th Mar 2008 18:21
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Quote: "Where do you guys come up with this stuff :/"


I have a book called "BANG!" It says all kinds of stuff about the universe

Quote: "we ownly know the universe of 0.001%"


More like 0.000000000000000000000000000000000000000000000000000000001%

Quote: "A nuclear war wont kill everyone. "


Check that fact again. On this planet, there are enough bombs to blow the world up 10`000 times over!



[Edit] Above : Just playing around with those smilies!

Oooooops!!! I accidentally formated drive c.
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Grandma
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Posted: 9th Mar 2008 18:23
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Killing off everyone isn't the globalists plan anyways. They just plan to reduce our numbers to a more "managable" size, let's say 500 mill. Easier to control.

This message was brought to you by Grandma industries.

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andrey d
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Posted: 9th Mar 2008 23:50
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Quote: "Luckily, we do know the universe is expanding and that according to these theories, ultimately, it'll do exactly as those stars going black hole, and implode on itself."

No, you're wrong, we know nothing. Seeing the tiny piece of space doesn't magically give us access to all the rest.
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Dream
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Posted: 13th Mar 2008 19:53
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How do we know that our universe could be part of billions of universe in a super univerese and it could go on for ever and ever...................................................
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Mr Z
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Posted: 13th Mar 2008 20:57
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Quote: "No, you're wrong, we know nothing. Seeing the tiny piece of space doesn't magically give us access to all the rest."


He is partially right. There exist three theories. The other two are:

One:
The expansion will continue expanding forever.

Two:
The expansion will continue accelerate to a point where the universe itself is slit to peaces.



Seems like the one about expansion forever will be the correct one at the moment.

Darkness, you haunt me. If I give in, I would be an monster beyond imagining. Light, you guide me. Thanks to you, I see past the nothingness. Life, I choose to live in the light.
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Diggsey
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Posted: 13th Mar 2008 21:37
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The reason that a whole star can fit into a volume smaller than the size of a hydrogen atom is because only about 0.000001% of atoms are protons/neutrons/electrons, and of those smaller particles, only a tiny amount is taken up by smaller particles, and so on (It could go on forever, we don't know! If it did, it would mean that everything is 99.9 recurring% nothing, which as everyone should know is exactly equal to 100%)

Proof that 0.9 recurring is equal to 1


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BiggAdd
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Posted: 13th Mar 2008 22:23 Edited at: 13th Mar 2008 22:27
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Quote: "One:
The expansion will continue expanding forever.
Two:
The expansion will continue accelerate to a point where the universe itself is slit to peaces."


The most likely one is that our universe will collapse in on itself, creating another big bang, throwing everything out again.
If humanities stab at the laws of physics is anywhere near correct, the universe cannot simply infinitely expand outwards.

I honestly would not be surprised if one day somebody turns around and tell us: "Well actually all the laws of physics you've come to love are actually wrong. Here is whats really going on"

At one point, physics was to be "Done and dusted" they thought they figured everything out. Until they discovered quantum.

Normal physics just doesn't work right with very small or very large systems or high speeds.

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Mr Z
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Posted: 13th Mar 2008 23:58
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The universe has an accelerating expansion. This means it expands faster and faster. If the universe is going to implode, the mass must be so great that this expansion slows down, stops, and then go the other way. And it seems to not be enough for that.

Darkness, you haunt me. If I give in, I would be an monster beyond imagining. Light, you guide me. Thanks to you, I see past the nothingness. Life, I choose to live in the light.
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monotonic
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Posted: 14th Mar 2008 00:04
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Quote: "The most likely one is that our universe will collapse in on itself"


But aren't they contemplating a theory of dark energy and matter. The theory states that dark energy is the driving force behind the expansion of the universe. Also, the universe is continuously accelerating outwards, and if it was collapsing, then it would be accelerating inwards.

Much good work is lost for the lack of a little more.
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andrey d
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Posted: 14th Mar 2008 08:59 Edited at: 14th Mar 2008 10:25
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Quote: "One:
The expansion will continue expanding forever.

Two:
The expansion will continue accelerate to a point where the universe itself is slit to peaces."

What prevents separate parts of space (and the matter within) from expanding and/or contracting at different rates?

Quote: "Proof that 0.9 recurring is equal to 1"

No, it's equal to 1-1/infinity. You can't just do the problem without using limits, and limits are approximations. I know all those people "proved" that I'm wrong, but so be it, I consider the idea idiotic.
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BiggAdd
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Posted: 14th Mar 2008 11:47
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Quote: "The universe has an accelerating expansion. This means it expands faster and faster. If the universe is going to implode, the mass must be so great that this expansion slows down, stops, and then go the other way. And it seems to not be enough for that."


The universe can be expanding faster and faster, but this does not mean that it will go on forever, the acceleration could be decreasing.

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Grandma
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Posted: 14th Mar 2008 12:12
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Forever is a long time, noone can predict what will happen 10 googol years from now.

This message was brought to you by Grandma industries.

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bitJericho
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Posted: 14th Mar 2008 12:18
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Quote: "The most likely one is that our universe will collapse in on itself, creating another big bang, throwing everything out again."


You actually have no idea if that's the most likely. No one does.

Quote: "The universe can be expanding faster and faster, but this does not mean that it will go on forever, the acceleration could be decreasing."


Actually, from what I've been reading, it could be. We don't yet know if there's enough mass in the universe to allow it to collapse in on itself or keep going.

Exciting!


Hurray for teh logd!
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Mr Z
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Posted: 14th Mar 2008 13:09 Edited at: 14th Mar 2008 13:10
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What I have rad the acceleration is not slowing down (due to the observations done), and that the math done by science tells that the mass is not enough.

Quote: "What prevents separate parts of space (and the matter within) from expanding and/or contracting at different rates?"


Have never been observed. Science is about observations, proof, explanations and doing those over and over again.

Darkness, you haunt me. If I give in, I would be an monster beyond imagining. Light, you guide me. Thanks to you, I see past the nothingness. Life, I choose to live in the light.
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Flashing Blade
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Posted: 14th Mar 2008 18:11
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Quote: "At one point, physics was to be "Done and dusted" they thought they figured everything out. Until they discovered quantum.

Normal physics just doesn't work right with very small or very large systems or high speeds."


A unified theory for big physics and quantum physics is the ultimate quest for those clever physics proffessors.

"String Theory", so they reckon, is a theory that accomodates both and may lead to the ultimate theory of everything.


The word "Gullible" cannot be found in any English Dictionary.
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Mr Z
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Posted: 14th Mar 2008 23:09
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String theory has an more evolved form called the M theory. Weired name, I know, but it manages to bring all the string theories together to one.

Darkness, you haunt me. If I give in, I would be an monster beyond imagining. Light, you guide me. Thanks to you, I see past the nothingness. Life, I choose to live in the light.
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