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Old 05-17-2006, 06:56 PM   #21
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Default Re: How Does The Universe Work?

Quote:
Originally Posted by talisman
well that's what it sounded like you were talking about...
Try dropping antimatter, it goes down. Dark matter is kind of hypothetical anyway.
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Old 05-17-2006, 07:03 PM   #22
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Default Re: How Does The Universe Work?

Quote:
Originally Posted by talisman
reach.... ok consider the electromagnetic force. We know the force carrier. (the photon). The weak force. We know the force carriers (W and Z bosons... I think). Pretty sure we know the carriers for the strong force as well. But we have no clue what the force carrier for gravity. A graviton has been proposed, but hasn't been observed. Therefore, as far as we know, we have no idea how gravity REALLY works. We know what gravity does, but not how it does it. That's what I'm saying.

(Higgs boson = mass which is obviously closely related with gravity, why I brought it up).

EDIT: dark matter is any matter with a very low albedo but some serious mass... the opposite of matter is antimatter.
I figured this is what you ment. However, your post was worded all wrong. You're telling me we didn't know WHY, which is practically irrelevant since it's impossible to know why. Watch thee words XD

And uh, I suppose there is always unanswered questions, so it's hard to say we know how anything REALLY works. But I get what you're saying, our understanding of gravity is extremely weak at this point, and yes, I agree completely. However, I think it's nice to atleast know what we currently know.

And we don't know what dark matter or energy is, honestly. Absolutely noone could tell you what it REALLY is ;p
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Old 05-17-2006, 11:46 PM   #23
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Default Re: How Does The Universe Work?

grandia as far as I know there's no matter that goes against gravity... gravity is always attractive, never repulsive.
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Old 05-17-2006, 11:53 PM   #24
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Default Re: How Does The Universe Work?

http://en.wikipedia.org/wiki/Exotic_matter

Hypothetical, but cool to read and not understand.
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Old 05-18-2006, 03:09 AM   #25
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Default Re: How Does The Universe Work?

I thought that the Higgs boson was only hypothetical.
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Old 05-18-2006, 05:11 PM   #26
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Default Re: How Does The Universe Work?

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Originally Posted by aperson
Oh my god, you were doing bad until here then it just got hilarious.
Thank you. I try very hard. We should do it sometime ap.
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Old 05-18-2006, 05:22 PM   #27
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Default Re: How Does The Universe Work?

There is a facility where the goverment makes anti-matter. They showed it on the discovery channel. (I think that is what channel it was.)
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Old 05-18-2006, 05:43 PM   #28
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Default Re: How Does The Universe Work?

Quote:
Originally Posted by Lightknight924
Ok, so I'm learning about The Universe in Science class right now. I understand that our Solar System is part of the Milky Way Galaxy. That we are no more than a small speck in the entire galaxy. So it got me thinking.....what does the galaxy revolve around? A larger star? A black hole? Then, what does that star revolve around? Is it possible that our galaxy is no more than just a small speck in The Universe? Could that mean our galaxy is just a small speck inside another galaxy which is just a small speck inside another galaxy and so on and so forth?

Another thing I'm wondering is what creates gravity. The larger the mass in space the more gravity. So what creates this pull and why does it pull inward to the planet? The Universe amazes me.

Answers? Suggestions? Theories?
Nothing, we are moving outward, and im assuming the thing that created the universe stayed in the same spot.
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Old 05-18-2006, 07:01 PM   #29
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Default Re: How Does The Universe Work?

Quote:
Originally Posted by Grandiagod
Antimatter, despite the name, is not the exact opposite of matter.
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Old 05-18-2006, 07:24 PM   #30
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Default Re: How Does The Universe Work?

Pssh, Geno. They should man up and beat Culex with Mallow.
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Old 05-18-2006, 07:44 PM   #31
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Default Re: How Does The Universe Work?

Higgs boson hasn't been discovered yet because accelerators haven't been powerful enough to discover it yet. the LHC at CERN will be powerful enough to do so when it opens (which I think is in 2007).
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Old 05-19-2006, 02:17 AM   #32
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Default Re: How Does The Universe Work?

Yeah, gravity is caused by warps in time and space. Let me give you an example. You have a square rubber sheet, it's 2D. You drop a bowling ball into it, and it makes a huge crater-like thing. (The bowling ball is hanging in the sheet, it has not fallen through). If you place a tiny pebble pretty much anywhere in the sheet, it falls towards that crater. There you go, gravity.

P.S. Black holes occur when the objects rip through the sheet.
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Old 05-19-2006, 02:25 AM   #33
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Default Re: How Does The Universe Work?

I think anti-matter is like the opposite of matter.. It acts the exact same way regular matter does, but instead, it has a negative charge. That's pretty much it.

1 is the opposite of -1, yet they are both the same distance from 0.
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Old 05-19-2006, 11:03 AM   #34
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Default Re: How Does The Universe Work?

Quote:
Originally Posted by Porkbutts
Yeah, gravity is caused by warps in time and space. Let me give you an example. You have a square rubber sheet, it's 2D. You drop a bowling ball into it, and it makes a huge crater-like thing. (The bowling ball is hanging in the sheet, it has not fallen through). If you place a tiny pebble pretty much anywhere in the sheet, it falls towards that crater. There you go, gravity.

P.S. Black holes occur when the objects rip through the sheet.
You just used the concept of gravity to explain gravity. GJ.
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Old 05-25-2006, 03:27 PM   #35
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Default Re: How Does The Universe Work?

I don't think that the Universe revolves around anything. It just keeps getting bigger and bigger until eventually it explodes- then it gets small again. The universe is kind of like a penis in that sense.

Looking back at all these forums I remember you guys from the days of young. Kudos if you can figure out who I am- I know one person who can .
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Old 05-25-2006, 07:02 PM   #36
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Default Re: How Does The Universe Work?

lol...he said penis...but yes according to the Big Bang Theory the Universe started out as a small ball no larger than a golf ball...Then with radiation and stuff..it exploded and continually grows larger and larger. i only know bits and pieces..but ya..theres my two cents. If anyone can elaborate...please do. Im trying to get an Astronomy major one day. Not before my Chemistry major
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Old 05-25-2006, 09:26 PM   #37
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Default Re: How Does The Universe Work?

Quote:
Originally Posted by Porkbutts
I think anti-matter is like the opposite of matter.. It acts the exact same way regular matter does, but instead, it has a negative charge. That's pretty much it.

1 is the opposite of -1, yet they are both the same distance from 0.
That's basically it. The antimatter particle of a proton has a charge of -1, but the same mass. The antimatter particle of an electron has a charge of +1, but the same mass, etc.

Quote:
Originally Posted by Porkbutts
You have a square rubber sheet, it's 2D. You drop a bowling ball into it, and it makes a huge crater-like thing. (The bowling ball is hanging in the sheet, it has not fallen through). If you place a tiny pebble pretty much anywhere in the sheet, it falls towards that crater.
This is a common metaphor used to explain what's going on in relativity, but it's slightly misleading because it doesn't explain why objects tend to go towards dips in the sheet.

Let me go through it step by step:

- Draw a whole bunch of grid lines through empty space. A three-dimensional coordinate grid. When it's totally empty, all of those lines are flat and don't change with time.

- A massless particle traveling through empty space travels in a straight line: that is, it travels along a grid line.

- Now put some matter and energy in. Lines running close to matter and energy will tend to curve toward it - the more mass/energy, the more curvature.

- Now everything moves along the new lines, only they're curved. Things will speed up/slow down depending on how curved the lines are.

Quote:
Originally Posted by LightningSlash
I don't think that the Universe revolves around anything. It just keeps getting bigger and bigger until eventually it explodes- then it gets small again.
Why would it explode? What would cause an explosion?

The theory that I think you're referring (very poorly) to is the Big Crunch hypothesis, and it works like this:

- The universe is expanding too slowly. The force of gravity eventually pulls everything back together.
- Once everything becomes close enough together, it'll explode out in another Big Bang.

There's plenty of credible scientific evidence that suggests that this scenario is highly unlikely - for one thing, not only is the universe's expansion not slowing down, it's speeding up. The rate at which the universe is expanding now is very finely balanced with gravity, but if it were just a little too high, we have the scenario known as the Big Freeze:

- The universe is expanding too quickly. The force of gravity can't pull everything together, and eventually everything is too far apart.
- Once everything becomes too far apart, everything becomes cold because heat energy escapes into space.
- Everything becomes chunks of cold crap floating in space. Nothing happens. Ever.

There's a nice discussion here:

http://en.wikipedia.org/wiki/Ultimat...f_the_universe

But seriously, I wish some of you guys would try to do a little bit of research before you post about crap you don't know anything about.
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Old 05-26-2006, 01:00 AM   #38
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Default Re: How Does The Universe Work?

Quote:
Originally Posted by talisman
dammit you're all retarded. NO ONE UNDERSTANDS GRAVITY. it's easy as hell to figure out how it works, that's not the problem. no one knows WHY it exists because no one knows why mass exists, and mass is what causes the bends in space time. It's so incredibly profound... how the hell does spacetime know to bend just because there's some mass in it? Why does the earth orbit the sun? Does the earth know the sun exists? No... it has no clue. It's action at a distance and no one knows why it happens.
Welcome to the difference between rationalism and empiricism, a course by Charlotte.

Science is part of the empirical mode of thought started by Aristotle which is decided entirely by physical experiences through the senses. The only acceptable things in Science are those which we can somehow examine, measure, understand, and postulate.

Philosophy is a part of the rationalist mode of thought originally started by some derivative of religion sometime around 20 millenia ago. It didn't really start picking up speed until a man named Socrates, who was followed by Plato, brought some thought to the table. Plato was the one who recorded and explained the work of himself and Socrates, and started the school of thought called Rationalism, which most philosophy strings from.

The difference between science and philosophy is that science is recording how something happens and the forces that are involved, and philosophy is try to create a supposition as to why these things happen, and for what reason or purpose.

We are trying to hypothetically understand what is physical, not what is metaphysical. To clarify: science and philosophy are two seperate facets regarding the same thing and cannot be defined in the same ways.

Thank you for your time,

Charlotte
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Old 05-26-2006, 01:11 AM   #39
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Default Re: How Does The Universe Work?

Quote:
Originally Posted by Reach
The universe isn't a living being like us
Says one mitochondria to the other.
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Old 05-26-2006, 02:11 AM   #40
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Default Re: How Does The Universe Work?

Quote:
Originally Posted by Charlotte21
Stuff

In other words, you can't use the rules of Chess to play Hungry Hungry Hippos.
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