Gravity is the 5th Dimension. Its a warping dimension around ANY particle (theoretically) and its warping nature causes an attraction. An easy way to look at it, is like a warping bubble around an object, warping at all angles to the observer. The end of this bubble is theoretically not existant. So really, when you want to find the smallest force attraction, its theoretically endless. Its still a phenomenon as far as physics goes.



The universal ratio gravitational constant first measured by Newton is 6.673 × 10^-11 m^3 kg^-1 s^-2



The constant has been proven right, due to it fitting well with gravitational acceleration, and in use when measuring distance, time, speed, vector coordinates in space, and on earth.



When considering forces of fundamental particles, the gravitational force can appear extremely weak compared with other fundamental forces. For example, the gravitational force between an electron and proton 1 metre apart is approximately 10^-67 newton, while the electromagnetic force between the same two particles still 1 metre apart is approximately 10^-28 newton. Both these forces are weak when compared with the forces we are able to experience directly, but the electromagnetic force in this example is some 39 orders of magnitude (i.e. 10^39) greater than the force of gravity — which is even greater than the ratio between the mass of a human and the mass of the Solar System.



Some examples of how they measured "G" or Gravitational Constant below.



""G"was first implicitly measured by Henry Cavendish (Philosophical Transactions 1798). He used a horizontal torsion beam with lead balls whose inertia (in relation to the torsion constant) he could tell by timing the beam's oscillation. Their faint attraction to other balls placed alongside the beam was detectable by the deflection it caused. However, it is worth mentioning that the aim of Cavendish was not to measure the gravitational constant but rather to measure the mass of the Earth through the precise knowledge of the gravitational interaction.



The accuracy of the measured value of {G} has increased only modestly since the original experiment of Cavendish. {G} is quite difficult to measure, as gravity is much weaker than other fundamental forces, and an experimental apparatus cannot be separated from the gravitational influence of other bodies. Furthermore, gravity has no established relation to other fundamental forces, so it does not appear possible to measure it indirectly. A recent review (Gillies, 1997) shows that published values of {G} have varied rather broadly, and some recent measurements of high precision are, in fact, mutually exclusive."

The Genesis Singularity wrote:

Why don't glasses float off the table? Why does the moon affect the oceans of the earth and not say random garbage or leaves on the street? Why Do planets orbit the sun and how does all of this fit into Eintstien theory of relativity(the warp space time phenomenon?



If you don't know please don't answer or just say so. If this is something that science doesn't yet know please answer telling me that. I know alot about alot of stuff and this makes no sense to me.

Your second point about the moon effecting garbage or trash on the street would make for a great high school experiment =d considering if you had a scale that could weight out many decimal places in a tightly controlled setting. I'm sure you'd find the trash to weight very slightly less while the moon is perpendicular to your tangent position on the earth.



For your 3rd point about planets orbiting the sun. I'll explain it to you the way it was explained to me, and I'll hope that it makes a least some sense. Consider a man with a gun. If he stands still, holds out his arm, and drops a bullet, the bullet will fall at a fixed rate depending on how much "spacetime" is curved in that region(ie how much gravity is present) Everything will fall at the same rate in that amount of gravity, exemptions for air resistance and yadda yadda. Now if that man fired the bullet out of the gun, it would travel very fast, but still fall at the same rate as if he had dropped it while standing still. Now, if he fired the gun fast enough (in a theoretical sense with no air resistance or anything), which would have to be many miles per second, it could fall at the same rate that the earth is curving. So the bullet would never once hit the ground, it would continuously be in a free fall around the earth.

When you start moving farther from the source of gravity, you don't need such high velocitys to keep something falling towards, but never striking an object. That's why keplers laws work so well. If you know the distance, and how long an object takes to travel around a gravity source, you can determine its speed, because that is the speed which is required to keep the object from falling into the gravity source.

From a relativistic point of view I always think about a trampoline with a heavy bowling ball in the center, and rolling baseballs in straight lines through the curved region.



But I have a very hard time explaining relativity to other people, even my own grasp on it isn't as good as I'd like.





Sorry if my post makes no sense =d it's 2 am and I'm buzzed.

Gravity is not a 5th dimension. I'll make this as simple as I can, and though I detest it for its inaccuracy, I'm going to use the rubber sheet description because it is a fairly good analog.



Imagine taking a sheet of rubber and stretching it tightly over a square frame so that you have a flat rubber surface a couple feet long on each side. If you take a baseball and place it in the center of the rubber sheet, you will notice that a small indentation is made by the ball in the rubber sheet. Now, place a bowling ball a few feet from the baseball. This much heavier ball warps and dents the sheet much more dramatically, and you'll notice that the baseball will roll down this indentation until it reaches the surface of the bowling ball. The baseball stays there as it is still trying to get to the bottom of the curve made by the bowling ball.



Gravity is kind of like this. Imagine that all of space and time are represented by the rubber sheet, and the Earth is the baseball while the bowling ball will play the role of the Sun. Now the tricky part... you have to imagine that the bottom of the pit in the rubber sheet is actually at the center of the Earth, or Sun... and that it is not a flat sheet, but in 3 dimensions comes in from every direction at the same time. This pit in the fabric is an objects "gravity well". What you feel as the force of gravity is simply your body "sliding" down the Earth's gravity well, trying to get to the bottom (which is at the center of mass of the Earth). But the surface of the Earth stops your fall and holds from falling further. Just like the baseball and bowling ball, objects with more mass create a deeper gravity well with steeper sides. The Suns gravity well extends well beyond the orbit of Pluto while Earths doesn't make it even to the next planet. You yourself create a small gravity well. Incredibly small, but it exists nonetheless. Now with the rubber sheet example, it is the Earth's gravity that is pulling the balls down and denting the sheet. Not so with planets, or your body. It is the mere presence of mass, in any amount no matter how infinitesimal, that causes space to warp. You are not being pulled down into the fabric of space and make the fabric dent that way, and that is why the rubber sheet example isn't so accurate. It's a good starting point though. Since space and time are part of the same time... gravity, or the curvature of spacetime, affects how time flows and moves as well. Mass actually causes time to warp as well.



I'm going to assume you've all seen those coin "black holes" in the malls where you put the coin in and watch it roll in a spiral down the funnel until it falls through the hole. Lets say that the funnel is the Earth's gravity well. In this situation, the center of the Earth would be right where the hole is. Now we'll say the coin is the moon, or the space station or any satellite. If you just let the coin slide down the funnel, it hits the Earth and stops there. If you roll the coin down the chute, it will spiral around the Earth, gradually getting closer and closer. If you could increase the speed the coin moves at to just the right amount, you could get it to stay going in circles around the funnel (Earth) indefinitely. As long as the speed is enough to counteract the motion down the slope, the coin will orbit. If you increase the speed even more... the coin will begin to work its way back up the slope of the funnel until it flies out. That is how things stay in orbit around the Earth, or how they escape Earths gravity and travel to other planets.



With these things in mind... picture the moon overhead creating its own warps in spacetime. It is this warp in spacetime that causes the tides. The very rigid rocks of the Earth don't slide much down this gravity well, though they do a very little, while the liquid water slides a bit more... about 20 feet more to be precise. The tides. Since the gravity well is enough to cause a tide... it is also enough to affect other objects on the surface of the Earth. Objects do indeed weigh less when the moon is directly overhead than they do when it is perpendicular or on the opposite side of the Earth. In fact, on the equinoxes, it is easier to stand eggs on their ends because of the gravitational aid of the moon. Not a lot easier... but it does help.



To sum it all up... you feel gravity when you pass through a region of space that has been warped by the presence of mass. The force you feel will seem to attract you towards the center of mass of the object. The force is proportional to the quantity of mass, and inversely proportional to the distance from the object. This means that the more massive an object, the stronger you feel its influence and the farther away you are, the less you feel it.

I hate the rubber sheet analogy to, but in the absence of anything better and with the caveat that it is almost completely incorrect, it works.



To the OP... I did explain how books don't float off of tables. They are closer to the MUCH deeper and steeper gravity well of the Earth. The moon does affect them... it makes them lighter. But they won't float off the table because the moons gravity well is no where near deep enough or steep enough at this distance to cause that to happen.

The Genesis Singularity wrote:

Why don't glasses float off the table? Why does the moon affect the oceans of the earth and not say random garbage or leaves on the street? Why Do planets orbit the sun and how does all of this fit into Eintstien theory of relativity(the warp space time phenomenon?



If you don't know please don't answer or just say so. If this is something that science doesn't yet know please answer telling me that. I know alot about alot of stuff and this makes no sense to me.

Gravity is caused by the bending of spacetime due to mass. Simple enough.

The Genesis Singularity wrote:

Why don't glasses float off the table? Why does the moon affect the oceans of the earth and not say random garbage or leaves on the street? Why Do planets orbit the sun and how does all of this fit into Eintstien theory of relativity(the warp space time phenomenon?



If you don't know please don't answer or just say so. If this is something that science doesn't yet know please answer telling me that. I know alot about alot of stuff and this makes no sense to me.

I think that the answer to the ocean question is that the ocean is a covalent fluid acting as one and so as the earth spins there is a slight centrifigal force action to the ocean as well as the moon's gravitational sucking on the earth's surface creating a bulge where the pull is strongest. The Moon probably has the same affect on the atmosphere since it too is a covalent fluid acting as one........I think the Earth is a dual planet system meaning that the Moon and the Earth are one unit and must affect one another due to this relationship.As far as formulas are concerned I am an idiot.



The leaf on the other hand is a solid and not covalent with anything but itself. It may be affected in that it swells at low tide and retracts to a smaller shape at high tide. The effects may be hard to measure. What do you think?

Han Solo wrote:

Gravity is the 5th Dimension. Its a warping dimension around ANY particle (theoretically) and its warping nature causes an attraction. An easy way to look at it, is like a warping bubble around an object, warping at all angles to the observer. The end of this bubble is theoretically not existant. So really, when you want to find the smallest force attraction, its theoretically endless. Its still a phenomenon as far as physics goes.



The universal ratio gravitational constant first measured by Newton is 6.673 × 10^-11 m^3 kg^-1 s^-2



The constant has been proven right, due to it fitting well with gravitational acceleration, and in use when measuring distance, time, speed, vector coordinates in space, and on earth.



When considering forces of fundamental particles, the gravitational force can appear extremely weak compared with other fundamental forces. For example, the gravitational force between an electron and proton 1 metre apart is approximately 10^-67 newton, while the electromagnetic force between the same two particles still 1 metre apart is approximately 10^-28 newton. Both these forces are weak when compared with the forces we are able to experience directly, but the electromagnetic force in this example is some 39 orders of magnitude (i.e. 10^39) greater than the force of gravity — which is even greater than the ratio between the mass of a human and the mass of the Solar System.



Some examples of how they measured "G" or Gravitational Constant below.



""G"was first implicitly measured by Henry Cavendish (Philosophical Transactions 1798). He used a horizontal torsion beam with lead balls whose inertia (in relation to the torsion constant) he could tell by timing the beam's oscillation. Their faint attraction to other balls placed alongside the beam was detectable by the deflection it caused. However, it is worth mentioning that the aim of Cavendish was not to measure the gravitational constant but rather to measure the mass of the Earth through the precise knowledge of the gravitational interaction.



The accuracy of the measured value of {G} has increased only modestly since the original experiment of Cavendish. {G} is quite difficult to measure, as gravity is much weaker than other fundamental forces, and an experimental apparatus cannot be separated from the gravitational influence of other bodies. Furthermore, gravity has no established relation to other fundamental forces, so it does not appear possible to measure it indirectly. A recent review (Gillies, 1997) shows that published values of {G} have varied rather broadly, and some recent measurements of high precision are, in fact, mutually exclusive."

I like the 5th dimension hypothesis about gravity.





mass + space=gravity



mass = gravity-space



space = gravity-mass

The Genesis Singularity wrote:



I forgot to add: If you do not know the answer please do not cut and paste from a science board. This does not even answer the question. This is why it is so hard to get decent answers to anything.

I only copied and paste half way through.

John wrote:

Gravity is not a 5th dimension.

No, gravity is the 5th Dimension...their are so far 256 Dimensions found by maths alone. I wouldnt be suprised if there are near infinite dimensions in this life.

string theory on dimensions is highly theoretical, there are many examples where it does not hold out, clearly with the use of quantum entanglement being tested with photons, we have to admit there are more dimensions than the fab four we preside in. obviously i concede that only four percent of the universe is "light matter", so yeah, a whole lot we dont know, but i wouldnt swear as absolute something that works in numbers



as for gravity, id say the simple answer is electro-magnetic to a great extent



the earth is spinning very fast, the earths electromagnetic field is large enough to fit ten full earths within it, if anything comes into that field it is susceptible to the force within the field, some objects pulling close, others pushing away.



if the earth were not this spinning magnet, gravity on it would cease to exist, correct?

Han Solo wrote:

John wrote:

Gravity is not a 5th dimension.

No, gravity is the 5th Dimension...their are so far 256 Dimensions found by maths alone. I wouldnt be suprised if there are near infinite dimensions in this life.

No... it isn't. Gravity is a property of spacetime in the presence of mass (or more specifically in the presence of a Higgs field. Gravity is not a dimension. Dimensions don't follow inverse square laws, yet gravity does. Dimensions are always there... gravity is only there when mass is present. There are numerous other reasons as well.

™ ORREIP wrote:

string theory on dimensions is highly theoretical, there are many examples where it does not hold out, clearly with the use of quantum entanglement being tested with photons, we have to admit there are more dimensions than the fab four we preside in. obviously i concede that only four percent of the universe is "light matter", so yeah, a whole lot we dont know, but i wouldnt swear as absolute something that works in numbers



as for gravity, id say the simple answer is electro-magnetic to a great extent



the earth is spinning very fast, the earths electromagnetic field is large enough to fit ten full earths within it, if anything comes into that field it is susceptible to the force within the field, some objects pulling close, others pushing away.



if the earth were not this spinning magnet, gravity on it would cease to exist, correct?

ORREIP:

The dimensions have to have properties.In string theory those curl up concepts are still just imaginative exercises.

My new theory:

Physics of Ignorons deals with Faster than Velocity of Light Particles, and has shown the REAL NATURE and ORIGIN OF PHOTON, as an entngled quantum state.It shows the creation mechanism of photon involves: a forced forged fermion to boson transformation.

This has opened up a new frontier in physics.The rela nature nd origin of photon have been elusive to Einstein et.al in their times.



http://www.myspace.com/syedameen

Since this is a physics forum and not a math forum, I was going with the Physics definition of a dimension. Time, the 3 large spatial dimensions we exist in + whatever else String Theory says it needs to work.



Gravity in physics is not a dimension when viewed from an astrophysical standpoint.



To the OP... there really isn't misinformation here... there is only information being couched in the language of different disciplines. Math views things differently from physics, but both are correct.