what's the scientific explanation?
There is none. A bunch of theories and whatnot, but no definitive explanation.
| Quote : In physics, gravitation or gravity is the the tendency of objects with mass to accelerate toward each other. The gravitational force is one of the four Fundamental interactions in nature, the other three being the electromagnetic force, the weak nuclear force, and the strong nuclear force. Gravitation force is the weakest of these interactions, but acts over great distances and is always attractive. In classical mechanics, gravitation arises out of the force of gravity (which is often used as a synonym for gravitation). In General Relativity gravitation arises out of spacetime being curved by the presence of mass, and is not a force. In quantum gravity the graviton is the postulated carrier of the gravitational force.[1]
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| Quote : A bunch of theories and whatnot, but no definitive explanation. |
That's true of anything really. Except death and taxes of course.
Fair enough, we could all be living in a Matrix type thing for all we know, but most scientifically proven 'theories' are beyond doubt in the axiom system we choose to acknowledge at the moment.
Gravity, on the other hand, has no definitive explanation i.e. there is no physics model that works and can completely explain gravity and be confirmed by experimental results.
Ummm...
Gravity has been confirmed by experimental results millions of times.
Specifically, gravitational fields have been replicated here on earth by spinning heaving metal objects at high speeds.
Ever heard of a gyroscope?
By explanation I assume Pike means the cause. The 'why does gravity happen?, what causes two masses to attract?' part.
The cause is not yet established.
And gyroscopes have nothing to do with gravity, per se. Force comes from acceleration and when masses spin you get acceleration even with a constant rotation speed. When those masses are spinning non-uniformly with a variable rotational speed, all sorts of weird things happen in weird directions.
| Quote : all sorts of weird things happen in weird directions |
Right... that's called gravity. ;-)
No. It's called inertia. Gyroscopes don't need gravity to work and a gyroscope model does not take gravity into account (for solving a problem).
That's part of why they're so useful: they work in space.
Anyway, you should know that breaking this law most often hurts...
| Quote : all sorts of weird things happen in weird directions |
Right... that's called gravity. ;-)
| Quote : An object traveling in a circle behaves as if it is experiencing an outward force. This force, known as the centrifugal force, depends on the mass of the object, the speed of rotation, and the distance from the center. The more massive the object, the greater the force; the greater the speed of the object, the greater the force; and the greater the distance from the center, the greater the force.
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And I allways thought centrifugal force was real....Sees thread heading twards Quantum Physics & beats feet...
| Quote : By explanation I assume Pike means the cause. The 'why does gravity happen?, what causes two masses to attract?' part.
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yes, that's what i meant
i'm kidding folks.
i really have no clue about physics. I'm just randomly quoting shit from wiki.
;-)
Who needs science to explain it? All I know is my wifes breasts aren't
as high as they used to be.
roger that!
| Quote : There is none. A bunch of theories and whatnot, but no definitive explanation. |
Which is why there is still no unifying theory for the four fundamental forces.
Gravity is not your problem, it's the attraction of other peoples stuff you have difficulty in resisting.
A surprisingly moral stance from a Scouser.... [/stereotyping]
I wasn't judging, just don't like non union fcukers getting work which is rightfully ours.[/Scouse]
That's like asking what is the cause of electromagnetic force, or what is the cause of weak force, or strong force.
The four fundamental forces are just there. We have no definitive explanation as of yet.
Superstring Theory seems to be on the right track, though there are some MAJOR obstacles still in place.
Basically it states that the elementary particle is a 1 dimensional loops of energy that vibrates. Depending on the frequency of vibration, the particle produced by that string varies.
*If* this theory is correct (or M-theory, they are correlated) then the explanation for gravity is simple. One of the particles produced is the graviton. Gravitons attract to each other, therefore the more mass something has, the more gravitons it will have and the more gravitational pull it will have.
Why the forces exist the way the do in the exact magnitudes that they do can all be explained by string theory, it's just extremely complicated and I only understand the very very very basic concepts involved.
Thus far in science, this is the closest they have come to explaining the "whys" of gravity.
Quantum physics is a nasty & dain brammaging thing... Please don't make my head hurt
I admit it's hard to grasp the concepts, but once you do it changes the way you look at things.
Sorry for the late response, I've been doing a spot of reading to freshen up my knowledge. I can now state with the utmost certainty that I'm going to put my head in a bucket of iced water. Seriously though, gravity is here for the moment. One more phase change as the universe expands and it may leave us. 'Moment to moment', you may be onto something there.
I'm pretty sure that the physics of our universe are set until it's demise.
It is possible for a universe to exist without gravity, however within our universe the laws of physics are universal. Yes, that's up for debate, but from observing the universe around us, we can safely come to this conclusion.
In order for gravity to cease to exist, the very foundation of our universe would have to be altered, most likely killing us in the process.
Energy is measured in quanta.
The more mass something has, the more quanta is transferred back and forth, creating a sort of connection which goes into Mr. Albert's theory that everything is connected via EM fields.
It also explains the big bang theory.. large masses attracted together, bringing in smaller objects, to form the big bang.
Because everything is built out of atoms, which carry some form of charge, everything we know is attracted to something else.
Don't really have the time to get into this at the moment. Just have a think about this. During the first few instants of the universe there were only particles with stupid high energies. There was no matter and hence no gravity. We started off without it, we can just as easy lose it again. It is all about how dense the matter field is and how forces can be carried in that environment. As we expand it's density decreases, losing gravity may turn out to be a consequence of that.
Gravity exists regardless of charge.
You're blending EMF and Gravity together.
Gravity is created by the presence of mass, not the charge.
Einstein was never able to prove a correlation between EMF and Gravity though he did spend a good chunk of his life trying.
That doesn't explain why the big bang happened or how.
You're also discussing things at an atomic level, in order to truly understand any force, you need to delve deeper into the crazy world of quantum physics.
Energy is measured in quanta.
I think quanta is more of a generalization covering different forms and amounts of energy. Not just gravity.
As far as we know, gravity *is not* a form of energy.
It's a distortion in spacetime itself.
In my view gravity certainly doesn't have the characteristics of energy's as we think of energy. If it did it seems to me that the characteristic of attracting another mass would diminish the strength of the attracting gravitational field. Perhaps gravity will lead us to a perpetual motion machine. [/another topic all together]
I'm not aware of anyone here who truly can understand quatum physics.
I did break it down into QP though = Quanta. the smallest amount of energy being exchanged.
It's believed that energy is constantly in exchange when collisions occur. That alone forms a connection. Enough of this and a small bond occurs.
AE believed that you could never truly touch something because the force you feel when touching someone was the force of your own electrons/protons/neutrons are pushing back against you.. you didn't touch, it was like polar opposites. Two of the same poles trying to touch one another. That was his theory.
When you look at how quanta works, you'll see how things can bind together and possible for a small level of gravity.. on a large scale, such as that of Earth, there is enough to hold people.
Go to the moon, you weigh less based on smaller mass. Go to a larger planet, you weigh more..
Figuring quanta takes place at the absolute smallest level.. let's say there are 100 collisions a second.. each transferrng energy back and forth on an even scale.. because that's the only way it works, otherwise it would be unstable.
100 collisions, 1 second, means that there is a constant connection somewhere and they can't seperate until that energy is exchanged.. thus, a small form of gravity. That's the current understanding from what I understand with QP.
We're discussing two different definitions of gravity here. There is general relativiy and then there is the QP definition.
I honestly don't know much about the QP definition. I only know what I've learned thus far, and that's mostly been GR. I guess that shows how physics truly does have a gap in it that needs to be filled.
| Quote : I guess that shows how physics truly does have a gap in it that needs to be filled. |
I had a GUT feeling you'd say something like that!
No, you're just hungry.
***sniggers***
| Quote : It is possible for a universe to exist without gravity, however within our universe the laws of physics are universal. Yes, that's up for debate, but from observing the universe around us, we can safely come to this conclusion. |
You and the rest of the population of this planet can observe the universe for the rest of their lives, and you still will only have seen the tiniest fraction of the universe. It won't help you one bit though if you don't know what you're looking for.
Just observing it will not do you any good. First set up a hypothesis, then derive from that what you need to observe in order to prove or disprove it, then start searching for the empirical evidence.
Gravity is in fact caused by beer. If there were no beer there would be no gravity. I shall now go out and drink all the beer to prove this.
***return many hours later***
Gravity is not caused by beer, but there is evidence that it enhances it's effects!
It's obvious that you live your life in experimentation (recommendable, btw). It's also obvious you would be lousy scientist (also recommendable, I might add).
I'll add that to my "Need to know" information!!!!!!
As if you did not know that already.... now get back down here, you old sparrow legs [/wingding]
| Quote : It's obvious that you live your life in experimentation (recommendable, btw). It's also obvious you would be lousy scientist (also recommendable, I might add). |
Without examining my methods you make assumptions about my ability as a scientist. Assumptions! and I'm the lousy scientist.
I get no respect..... [/Dangerfield]
At first it seems to cause instability in the local gravitational field. This is what causes the wobbling. After many more beers the effects of gravity become irresistible and you are drawn directly down towards the earth. What more evidence can any sane being require. Although I will continue the research, just in case I've missed something.
| Quote : As if you did not know that already.... now get back down here, you old sparrow legs [/wingding] |
Further study indicates prolonged usage of Coors causes lower limb atrophy.
| Quote : At first it seems to cause instability in the local gravitational field. This is what causes the wobbling. |
I have observed that effect before..... I entered a "High Speed Wobble" state an a few occasions..... Usually leads to a crash.... Thus enforcing your research!!!!
I've never heard that!!!! As a matter of fact, Coors has caused me any damage...
Yes, it obviously has. Sparrow Leg Syndrome.
Naw..... That was just a bad camera angle..... [shrug]
Ahh, what other kind of damage then? Or, were you trying to say hasn't? Because you don't have to convince us that it has.
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