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**New Theories / Re: What exactly is gravity**

« **on:**29/03/2020 15:36:11 »

**Einstein's Equivalence Principle**:

Einstein’s equivalence is an extension to Galileo Galilei’s, relative motion of objects. He wrote this in 1632, even before Newton published his now-famous work.

“If you are in a closed room on a ship sailing at a constant speed and the ride is perfectly smooth, objects behave as they would on land. There’s no physical experiment you could conduct to tell whether you’re moving or stationary (assuming you’re not peeking out of a porthole).

This is an excellent idea/thinking of Galilei. When the ship is at constant speed, things in a closed room, behave as if on land. He compared closed room to Earth.

By the time of Einstein science developed a lot and he replaced ship to spaceship.

“Is there any physical experiment you could do within the confines of your spaceship to tell whether you really were accelerating through space (assuming there were no windows to look out from), or if, instead, you were inside a spaceship stationary on the surface of Earth? Einstein said no—just as Galileo imagined the indistinguishability between a person inside a smooth-sailing ship (confined without windows) and a person on land.This is called the equivalence principle”.

Einstein's theory of "Equivalence Principle" asserts the equivalence between inertial and gravitational forces of acceleration. It rests upon the fact that we cannot distinguish between the inertial forces, experienced, in a rocket ship accelerating through space, and the gravitational forces experienced on the surface of the Earth.

01 Equivalence principle tells indistinguishability, between a person inside a closed chamber of space ship to a person on land.

02

**Indistinguishability is valid only when two things compared are equal**

03 Does a closed chamber is equal to Earth?. If so, Earth also must be a closed one. But we are taking Earth as open.

04

**So, equivalence principle is not “indistinguishable”, but “distinguishable”**.

05 Ok, engine of the spaceship is on, it started accelerating through space. Escape velocity is the speed at which the sum of an object's kinetic energy and its gravitational potential energy is equal to zero. As the spaceship gains escape velocity, for the spaceship “Gravity is equal to acceleration”.

06 As per Einstein, if we place any mass, anywhere in the spacetime, it curves, which is known as Gravity. Similarly, there is curvature against Earth also. At that velocity, how this curvature is intact.

07 If Earth is an open, not having doors or windows, nothing can stop centrifugal force. Thiings may be different.

Finally, we can say that Earth is not an open but a closed one. This is exactly like that of a closed room in a ship or a

**closed chamber in spaceship**. If it is open, then it is not “indistinguishable”, but distinguishable.

This is the same reason why we don’t feel our planet’s movement around the sun.

**Space warps under accelerated motion**:

“Theoretically, you could be in deep space, far away from all significant mass concentrations and their gravitational influence. The rocket engine of the observer’s spaceship is firing and produces an acceleration of 9.8 meters (32 feet) per square second. This accelerated observer feels as heavy as we would feel on earth, since the gravitational acceleration with which an object on earth falls to the ground has that exact same value”.

**Does space time warps under acceleration motion**?.

01 It is true that as long as the space ship is at rest or stationary on the ground, one of the space crew, Mr. X’s weight is 75 kgs.

02 As the engine is start and the rocket start accelerating at the rate of 9.81 meters per second, Mr. X’s weight continues to be 75 kgs only.

03 If space time warps under acceleration motion, one’s rocket achieves escape velocity there must be change in gravity. No such thing hinted by Einstein.

03 Basic doubt of Einstein is that, the rocket is far away from all significant mass and its gravitational influence, in deep space where there is no Gravity, still as long as rocket engines work at exactly the right rate to accelerate 9.81 meters per second, how, things behave as if on land i.e., gravity.

04 In the cabin Mr. ‘X’s weight continues to be 75 kgs. So, Einstein thought that space time is warping under acceleration motion.

05 In ‘indistinguishability’, Galileo raised two important points, sailing is smooth and assuming you’re not peeking out of a porthole.

06 So, it is clear that

**Gravity can be packed in a closed room or space cabin. And, this packed Gravity behaves similarly to that on Earth**.

07 One’s you reaches the destination and Engine is shut, space time start interacting with the cabin. Since pressure is high inside the cabin, it moves out and equates with outside.

08 Here, effect of centrifugal force is far limited or negligible since there is no change of Mr. X’s weight anywhere.

**How Gravity works on Earth**:

I think, the following is the wonderful presentation of Einstein and it is possible for the people like Einstein only. No ordinary brain can get an idea or think.

“The room you are in could be a cabin aboard a rocket – In such a situation, if you let go of an object, the cabin floor would accelerate towards that object at 9.81 meters per square second – exactly the same acceleration of free fall here on earth. From your vantage point as an observer standing on the cabin floor, you cannot distinguish between the two situations: are those objects falling towards a massive body like the earth? Or is the cabin floor accelerating towards them”.

01 In macro level, this is 100% correct and valid.

02 Ok, there are two planets Earth and Moon. If moon is in “free fall”, like an object let to go. In such situation, if Earth raises towards Moon, it is possible to measure or to say, whether Moon is coming down or Earth raising.

03 In micro level, for an apple, Earth raising, impossible to measure or say anything. For an object to cabin floor, it is ok.

“This famous principle begins with the recognition that a gravitational force, as we experience it on Earth's surface ("weight"), is actually caused by spacetime accelerating through us on its way to the center of the Earth. We feel the force only because we are unable to follow the natural flow of spacetime which tries to carry us with it. In "free fall" or orbit we are co-movers with the spatial flow, and feel no force at all, as we offer no resistance to its inertial urgings”.

01 In “free fall”, as per Einstein, we are co-movers with the spatial flow and feel no force.

02 Gravity or weight we feel on Earth’s surface is actually caused by space time accelerating through us to the centre of the Earth. We feel the force, because we are unable to follow the natural flow of space time.

03 In “Indistinguishability”, it is clear that Earth is not an open frame, but a closed frame. There is no centrifugal force working against us as assumed by Einstein. Its effect is far limited.

04 In equivalence principle, we have discussed in detail that Gravity can be packed or moved. If it is due to flow of spacetime, since it is a continuous process, almost impossible to pack or move.

**What exactly is Gravity**:

From the theory, “Indistinguishability” it is clear that Earth is a closed frame. In case, if it is not correct, then the theory is distinguishable, invalid and incorrect. As pointed out by Galileo, we will get the feeling, as if on land, only when doors, windows are closed and sail is smooth. If Earth is having doors, windows, in other words an open frame, there is no comparison at all.

Earth is a closed frame, like that of a room in ship or cabin in spaceship. It paved the way for storage of additional energy. Since Earth is a closed frame, energy entering space time of Earth cannot move out that much easily. This additional energy is warping the space time of Earth. It is true that Gravity is matter blind. Total energy density is stranded against the Earth and it tries to move towards the center of the Earth.

The cabin of the spaceship is closed in a Gravity field only. This atmosphere consists of high energy density. The crew inside the cabin gets the feeling, as if on land. When the space ship reaches destination, engine stops, now high density energy in the cabin, interacts with space time of the space ship and adjusts with it.

**It clearly tells us that Gravity can be packed and moved.**

Suppose, Mr. X is standing in an open place and the space time around him is curved. For the strong density of energy, moving towards the center of Earth, he is an obstruction. Energy moving, nearby Mr. X, bends, interacts with the curvature, start flowing along with the curvature. This is Gravity or weight, we feel on Earth.

If Mr. X dives from a high place, in free fall, as thought by Einstein, Energy flow equates. Here, one more important point is that, Mr. X when he is stationary on the ground, there is strong curvature against him. In free fall, as he accelerates, curvature against him weakens further and further. As he approaches, 9.81 meters per second, curvature disappears permanently, in other words ‘free fall’. This is the same in case of Earth also. Suppose, let us imagine that Earth is at rest or stationary, there is strong curvature. When Earth started spinning, curvature weakens. But Earth is having a strong frame, by which it is closed from all sides and it is giving protection..

**Process of Earth spinning**:

01 Initially, all the planets, like that of satellites in the space, curves their space time and are at rest or stationary.

02 Energy flowing in the lanes pushes them.

03 Meanwhile atmosphere is developed, frame never allows energy in the lane to interact with Earth directly.

04 Energy in the open area start flowing along with the lane and drags Earth.

If Mr. X start moving in upward direction, as energy density in the space time weakens, curvature against him also weakens. It is true that energy is neither created nor destroyed, it can only be modified one form to other. A part of the incoming energy towards Earth bounces back and moves to faraway places. When these forces, incoming and outgoing equate, things at that place are at rest or stationary.

Yours

Psreddy