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Why didn't the universe collapse after the Big Bang? Gravity
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Why didn't the universe collapse after the Big Bang? Gravity
Glendower: I can call spirits from the vasty deep.
Hotspur: Why, so can I, or so can any man;
But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:
go with the flow the river knows . . .
Frank
I do not know, therefore everything is in pencil.Tags: None
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Originally posted by shunyadragon View Post
First as I posted here, the Higgs particle may not have been found at all. The next question - where does gravity come from? What causes it?
This is what I basically thought: http://www.universetoday.com/74015/what-causes-gravity/
Newton gave us the foundations of Physics, Classical Kinematics. Isaac Newton used the universal law of gravitation to describe how gravity works. Thanks to him we now any two objects in the universe that have mass exert a gravitational pull on each other. The greater the mass and the closer the two objects are, the stronger the force of gravity. However this only described the phenomenon in party. It basically was a more detailed description than just something makes any object that is unsupported to fall to the ground. Newton took the next step in describing it with his Theory of Relativity.
Einstein hypothesized that space and time were one and the same and served as the fabric of the universe. He stated that gravity was simply a curvature in space-time created by a mass object pretty much in the same way a piece of cloth would be curved if it was stretched out and a heft object was placed on it. This curvature in space created by an object with greater mass than the objects surrounding it would cause these objects of lesser mass to fall toward the more massive object.Atheism is the cult of death, the death of hope. The universe is doomed, you are doomed, the only thing that remains is to await your execution...
https://www.youtube.com/watch?v=Jbnueb2OI4o&t=3s
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Originally posted by seer View PostFirst as I posted here, the Higgs particle may not have been found at all. The next question - where does gravity come from? What causes it?
This is what I basically thought: http://www.universetoday.com/74015/what-causes-gravity/
So we need objects with great mass to cause gravity. But there were no such mass objects early in the creation of the universe - correct?Glendower: I can call spirits from the vasty deep.
Hotspur: Why, so can I, or so can any man;
But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:
go with the flow the river knows . . .
Frank
I do not know, therefore everything is in pencil.
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Originally posted by shunyadragon View PostThere is Quantum Gravity.Atheism is the cult of death, the death of hope. The universe is doomed, you are doomed, the only thing that remains is to await your execution...
https://www.youtube.com/watch?v=Jbnueb2OI4o&t=3s
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Originally posted by seer View PostThat is the stuff about gravitons - for which there isn't any evidence -correct? And that would kind undermine Einstein's and Newton's theories. Large masses would then not be necessary for gravity to exist.
No, Gravitons represent one of the predicted results to explain Quantum Gravity a property of the Quantum World. Yes, the discovery of Gravitons would give more support for Quantum Gravity. I am not sure what you purpose is here trying to play pokeman with highly theoretical concepts and hypothesis in Physics that represents work in progress.
Last edited by shunyadragon; 11-28-2014, 05:54 PM.Glendower: I can call spirits from the vasty deep.
Hotspur: Why, so can I, or so can any man;
But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:
go with the flow the river knows . . .
Frank
I do not know, therefore everything is in pencil.
Comment
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Originally posted by shunyadragon View PostThe problem is both my reference the Higgs research are in the cutting edge of Physics Research and are research in progress, and they are open questions of current research progress.
No, Gravitons represent one of the predicted results to explain Quantum Gravity a property of the Quantum World. Yes, the discovery of Gravitons would give more support for Quantum Gravity. I am not sure what you purpose is here trying to play pokeman with highly theoretical concepts and hypothesis in Physics that represents work in progress.Atheism is the cult of death, the death of hope. The universe is doomed, you are doomed, the only thing that remains is to await your execution...
https://www.youtube.com/watch?v=Jbnueb2OI4o&t=3s
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Originally posted by seer View PostThe point is that we don't really have a clue where gravity came from. Or why it exists. If Einstein is right and we need large mass objects to cause gravity then it could not have been present at the beginning of the universe. Of course Einstein could have been completely wrong.
No, that is not what Einstein says about gravity, except on a large scale. Your playing your usual game of pokeman and it is not worthy of a dialogue.Last edited by shunyadragon; 11-28-2014, 10:02 PM.Glendower: I can call spirits from the vasty deep.
Hotspur: Why, so can I, or so can any man;
But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:
go with the flow the river knows . . .
Frank
I do not know, therefore everything is in pencil.
Comment
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Originally posted by shunyadragon View PostFallacy Arguing from ignorance. The lack of evidence is not the evidence of lack, and has never been an effective argument for anything. If that was the case you could easily prove God does not exist..
No, that is not what Einstein says about gravity, except on a large scale. Your playing your usual game of pokeman and it is not worthy of a dialogue.Atheism is the cult of death, the death of hope. The universe is doomed, you are doomed, the only thing that remains is to await your execution...
https://www.youtube.com/watch?v=Jbnueb2OI4o&t=3s
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Originally posted by shunyadragon View PostFallacy Arguing from ignorance. The lack of evidence is not the evidence of lack, and has never been an effective argument for anything. If that was the case you could easily prove God does not exist..
No, that is not what Einstein says about gravity, except on a large scale. Your playing your usual game of pokeman and it is not worthy of a dialogue.
It's PokemOnO Gladsome Light of the Holy Glory of the Immortal Father, Heavenly, Holy, Blessed Jesus Christ! Now that we have come to the setting of the sun and behold the light of evening, we praise God Father, Son and Holy Spirit. For meet it is at all times to worship Thee with voices of praise. O Son of God and Giver of Life, therefore all the world doth glorify Thee.
A neat video of dead languages!
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i'm afraid both you seer and you Shunya make some errors worth pointing out.
Originally posted by seer View PostSo we need objects with great mass to cause gravity. But there were no such mass objects early in the creation of the universe - correct?
Originally posted by shunyadragonThere is Quantum Gravity.
Not sure if this is early enough during the Big Bang for quantum gravity effects to become noticable.
Originally posted by seerThat is the stuff about gravitons - for which there isn't any evidence -correct?
Originally posted by seerAnd that would kind undermine Einstein's and Newton's theories.
Originally posted by seerLarge masses would then not be necessary for gravity to exist.Last edited by Leonhard; 11-29-2014, 08:58 AM.
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Originally posted by Leonhard View PostThe kind of gravity talked about in the article could not be explained by appealing to the Great and Powerful Quantum Vacuum. However there's no mystery as to where the gravity would come from, the whole universe back then was loaded with a lot of energy.
So how does a lot of energy explain how the law of gravity came about? Is it not conceivable to have energy without gravity?Atheism is the cult of death, the death of hope. The universe is doomed, you are doomed, the only thing that remains is to await your execution...
https://www.youtube.com/watch?v=Jbnueb2OI4o&t=3s
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Originally posted by seer View PostSo how does a lot of energy explain how the law of gravity came about? Is it not conceivable to have energy without gravity?
Now you're asking a different question which I did not attempt to address, and I'm not sure what has got to do with the OP. Nobody is saying that 'the law of gravity comes from energy', to be frank I'm not even sure that sentence is coherent as what we typically mean by a law is the way something behaves, and by energy simple the ability to do work.
As for whether its conceivable to have energy without gravity, yes. I'm not sure what's the point to that observation though. According to the General Theory of Relativity, whenever we have any amount of energy in a physical location we also have a local curving of spacetime. If we don't have that, sure then this theory is false, however we have no good reason to assume that is.
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