My relativity

INSPIRATION

To many, nothing is more inspirational than a Manchester United vs. Chelsea friendly, well word friendly always sounds absurd. In my case the goal scored by Rooney across the half line was no less than an inspiration. The ball he had scored of rolled all over the net with a magnificent splendor. They showed the goal with all possible angles and the contours compelled with the spacetime referred in the relativity texts.

Theme

Here in this discussion I intend to provide relativity treatment to so buzzed anti-gravity. Gravity as we view through specs of general relativity is the curvature in space-time due to presence of massive objects in or around our particular frame of reference or rather observation makes the frame under consideration curved and the force of gravity is nothing but the negative gradient or slope of the space-time towards a heavy (massive) mass higher the gradient greater the force just like water drops seeping into a sink..More near to the drain faster they move to get flushed out.

Now what I want to state is, if similar treatment is to be given to antigravity rather than stating that the masses must repel we can alternatively define it as a positive gradient in spacetime.

My experiment

Let us consider a stretched rubber diaphragm as a correlation to space-time. I initially placed a lighter ball on the sheet and can be easily predicted there was a small depression created around it as per its weight. Then I placed a heavier and even large ball (denser) ball besides it created a relatively larger depression. The balls are not placed so close that the two pits formed coalesce to form one bigger pit and roll to a common center that is our spacetime has two depressions irrespective of one another. This occurred as a result of ELASTICITY of our experimental spacetime , which resulted in a astonishing fact that the force of gravity is limited range force that is not a infinite ranged force as suggested by the formula: Fg=Gm1m2/r^2.

That is there has to be a limiting value to ‘r’ that is it cannot exceed beyond a certain limiting value for two given masses m1 and m2. All of this fact will hold only if our consideration that the space-time is elastic holds!

Now what if real (no rubber sheet this time) space-time actually has certain elasticity?

First let us consider if, it is inelastic that is, gravity is an infinite ranged force then each and every mass will attract every other mass in this universe ,of course this force will speedily tend towards negligibility with increase in the factor ‘r’….but this fact of space-time not being non elastic brings forward a very unusual aspect.

Now in actual spacetime:

Consider the example of earth rotating around the sun. Consider from the frame of the observer, the sun is stationary, now as earth revolves around sun along a specific path, there will be a depression in the spacetime due to the MASS (no weight this time) of the earth as the earth progresses in its orbit two possibilities arise with two possible natures of spacetime.

1. Elastic spacetime.

2. Inelastic spacetime.

If and only if the spacetime is elastic there will be depression in the space-time only beneath (now term beneath as per the analogy of our simple 3-D rubber sheet) the earth.(which is actually desired)

AND IF the spacetime in totally inelastic there is no way that the depression created by earth will be resurged that is a tunnel will be formed or we can call there will be a permanent wrinkle in the spacetime… a permanent depression … which means there will exist a permanent force EVEN IF THE EARTH HAS MOVED AHEAD….as GRAVITATIONAL FORCE==DEPRESSION IN SPACETIME (gradient in spacetime)…which in turn means that there is a force without cause or there is force even after the cause in no more…this if we think further will in turn suggest that the force of gravity in universe is ever expanding even if the mass might remain constant … which in turn suggest that the universe is AT STANDSTILL .

This is totally in contradiction to what we observe and what we now know for sure ..that is the universe is surely EXPANDING.

Not going further in debate that universe is expanding or not , we know it actually is, we can conclude as per the above analogy that the spacetime is NOT inelastic! That is spacetime is elastic .

Our Elastic spacetime:

This is the place where our (my) understanding of spacetime is inadequate, the simple analogy with a rubber sheet is insufficient, the elasticity of rubber sheet is property of the material it is made of! But the elasticity of spacetime is the characteristic of the MASS PRESENT IN AND WAS PRESENT over the spacetime fabric. I purposefully highlighted the word ‘was’ the history of spacetime is important if we want to analyze the elasticity of this fabric.

Let us consider the famous example often discussed: “What will happen if the sun suddenly gets lost somewhere, that is, there is no mass at the centre of our solar system. Will the effect of loss of gravity be instantaneous?”

Now as we know it takes on an average 8.3 min for light to reach from sun to earth. This will be therefore the time for us to actually observe that sun has gone that is even after the sun has moved away we will be able to spot it till 8.3 min. What about the gravitational pull?? Will gravitational force disappear instantaneously? Or it will take time equal to 8.3 min or more than that?

These questions give rise to another question: what is the speed of gravity?