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Originally posted by ChaoticOrder
Originally posted by syrinx high priest
how cute
man thinks he understands the universe
I don't claim to understand anything. The only truth is in knowing you know nothing.
This is just a theory, and that was stated in the title but I shortened it.edit on 2-6-2012 by ChaoticOrder because: (no reason given)
“Tiger got to hunt, bird got to fly;
Man got to sit and wonder 'why, why, why?'
Tiger got to sleep, bird got to land;
Man got to tell himself he understand.”;
Originally posted by Ajax84
reply to post by ChaoticOrder
Hawking is right about the wave-function of the universe producing the Big Bang. There is one "tiny" problem though if he wants to use this to argue that God doesn't exist:
Originally posted by Cataclysm
The topic title lead me to expect some discussion of a "singularity"... it wasn't even mentioned.
To the OP and others with greater knowledge on these issues, please explain how the concept of a 'singularity' fits into this discussion.
Also, doesn't the dispute of finite vs. infinite universe still rage? Several years ago, that was a hotly disputed topic. Has something changed in that regard?
Very interesting topic (tho difficult)... congrats to the OP.
Originally posted by CLPrime
reply to post by PurpleChiten
The nature of gravitational attraction and repulsion is actually a little different from electromagnetic attraction and repulsion. Here's the deal:
Electromagnetism
+ charge and - charge: attraction, causing mutual centripetal acceleration
+ charge and + charge: repulsion, causing mutual centrifugal acceleration
- charge and - charge: repulsion
Now here's the funny part...
Gravitation
+ mass and + mass: attraction, the centripetal gravitational force we're all familiar with
- mass and - mass: attraction, but the masses accelerate away from each other (I'll explain below)
+ mass and - mass: pursual, with the two masses accelerating off in a straight line to infinity
Now, to explain the last two...
I'm sure you know all about F = ma (force = mass x acceleration). Well, when you have two negative masses, (-m), the gravitational force between them is positive (+F), which means, technically, the force is still attraction. But, to cancel out the other negative sign, the acceleration will be negative (-a). This causes the masses to accelerate away from each other.
Put simply, negative mass is negative inertia, so positive forces cause negative acceleration.
A positive and negative mass is a combination of the first two cases. The negative mass accelerates toward the center of the positive mass, but the positive mass accelerates away from the center of the negative mass. The result is the negative mass will chase the positive mass off to the far reaches of the universe, constantly accelerating the whole way.
edit on 2-6-2012 by CLPrime because: (no reason given)
Originally posted by CLPrime
reply to post by PurpleChiten
I knew what you were getting at...I just took the opportunity to explain a couple things: 1) that the simple push-pull of electromagnetism doesn't really translate to gravity as easily as some people would like it to (the two are similar, but fundamentally different); and 2) just the really cool nature of attraction/repulsion when dealing with positive and negative masses.
The second one was really my intention. I thought people might be intrigued by the idea of two masses chasing each other around the universe.edit on 2-6-2012 by CLPrime because: (no reason given)
Originally posted by Konduit
I believe that before the big bang there was Unity.
After the big bang, there was Duality, the creation of Light and Dark, Good and Bad, Hot and Cold, Male and Female, Past and Future. This is the very nature of our universe, opposites.
This is putting into words something that is beyond human comprehension.
edit on 2-6-2012 by Konduit because: (no reason given)
Originally posted by mwood
So, if there is a black hole where everything gets sucked into it then that matter has to go somewhere...right
Originally posted by CLPrime
Originally posted by mwood
So, if there is a black hole where everything gets sucked into it then that matter has to go somewhere...right
It does go somewhere...it goes to the center of the black hole.
I know people like to visualize black holes as flat discs, but they're not...they're spheres, and they have centers (singularities), and that's where all the matter goes. They only appear as discs because they rotate rapidly and form flat accretion discs of infalling matter around their equators (sort of like Saturn's rings).
Originally posted by ChaoticOrder
reply to post by Konduit
This is putting into words something that is beyond human comprehension.
If my theory is correct then it certainly isn't beyond our comprehension. Your vague theory probably would be though.
Originally posted by NowanKenubi
reply to post by Konduit
You are forgetting Twilight, Neutral, Warm, Androgynous, and Present, the thin line that links opposites.
Originally posted by CLPrime
reply to post by spy66
A black hole is a black body - meaning every photon (and therefore any particle at all) that falls on its "surface" is captured by the black hole. This means two things:
1) all matter that comes into contact with the event horizon will be captured and fall into the center of the black hole. The more matter is captured, the bigger the black hole gets. Of course the black hole isn't infinite, but it doesn't need to be - if a black hole were ever able to capture an infinite amount of mass, then the resultant black hole would be infinite...but seeing as how this is a physical impossibility, it's not something that could actually happen.
2) since a black hole is a black body, it emits black body radiation, called Hawking radiation. This is true of all black bodies. Even stars, which are approximate black bodies do this (though the black body radiation they emit is overwhelmed by their natural luminosity). Also, the Cosmic Microwave Background is a near-perfect black body spectrum, since it represent light emitted by the universe at a time when it absorbed all light that existed within it.