Gravity or density… and their relationship to the Earth
We have been taught in schools that the laws of gravitation discovered by Newton because of his observation of the apple falling from the tree are the basis on which all modern theories in physics are built?
Did they not tell us that it is the laws of gravity that make the earth revolve around the sun, and the moon revolve around the earth, and things fall to the earth?
Yes, they told us this, but I will tell you that there is no force called gravity
Gravity is an illusion
Gravity is just a hypothesis to justify a theory, not a fact
And when any of us jumps from a tower, he will inevitably fall to the ground, but he does not fall because of gravity!
And when the apple falls from the branch, it will fall to the ground, but not because of gravity!
Things fall to the ground for two reasons, and not for one reason
And it is not among these two reasons that the earth has a gravitational force that holds things.
The first reason is that the Creator made the earth stable and stable
In the flat, stationary land model, there is always a fixed side called “above” and there is an opposite side called “bottom.”
As for the spherical Earth that rotates up and down, they are relative and variable values
The second reason is the difference in density between the body that falls and the surrounding medium through which it falls, whether it is an air medium, an aqueous medium, or something else.
And this reason controls the speed, shape and pattern of the fall
for example :
Any object whose density is greater than the density of water will sink to the bottom.
Any body whose density is less than the density of water will float to the (highest).
An iron ball is denser than water so it falls to the bottom.
A cork ball is less dense than water, so it floats on the surface
Air is less dense than liquid water, so gas bubbles always rise to the top (defying the forces of gravity).
But when we say: Iron is a very dense substance, and air is a low density substance
What exactly does this phrase refer to?
In other words: what is density?
Density is defined as the mass of a substance in a given volume.
That is, the larger the number of atoms and molecules of a substance in a given volume, the denser the object.
The less matter or mass there is in a given volume, the less dense the object.
A cubic meter of iron is denser than a cubic meter of cork or air.
Because the iron atoms are tightly packed, and there are no large voids or spacing between particles, and therefore there is a greater amount or greater mass of iron in a small volume of matter
While cork is a low-density material due to the presence of spongy voids, and the loosening between the cork particles.
As for a cubic meter of air, it is less dense than cork because its molecules are farther apart
So: the fall or rise of objects in the medium that surrounds them is due to the discrepancy between the density of these objects and the density of the medium that surrounds them (a water medium, air, etc.).
There are many other factors that play a role in increasing or decreasing the density of bodies.
The first factor: is the temperature
Objects expand with heat and contract with cold
And when a body is heated, it expands, so the size increases, but the number of its molecules or atoms is the same.
And when any object is cooled, it shrinks and decreases in volume >>> and thus the density increases
Hot air is less dense than cold air, so cold air goes down and hot air goes up
Hot water is less dense than cold liquid water, so you find that in a bathroom heater, cold water is at the bottom and hot is at the top.
** Increasing the percentage of dissolved elements in the medium increases its density
A cubic meter of salt water is denser than a cubic meter of fresh water
Therefore, objects float more easily in salt water
And in order to understand that, let’s do this simple experiment together.
1- Bring a glass bowl and fill it with fresh Euphrates water
Then throw in a fresh raw egg
You will find that the egg sinks to the bottom of the bowl.
This is not because of gravity, but because the density of the egg is greater than the density of fresh water.
2- Gradually and slowly dissolve a little salt in the water
You will find that the egg started to rise a little from the bottom, but it remains suspended in the center of the bowl and swings in the water.
This means that the density of water at this stage has become equal to the density of the egg.
3- Add more salt. You will find that the egg will float to the surface because the density of the salt water has become greater than the density of the egg.
Let’s leave the aquatic medium and move to the surface of the earth, or land…
The land is also a large vessel like the vessel that contains the egg, but it is not filled with water, but rather with air.
On land we are surrounded by air, and just as water was the medium around the egg in the previous example, air is the medium around us on land.
Air is less dense than water, and it is less dense than most materials and objects around us
The air is less dense than apples and fallen leaves
The air is less dense than a feather, a snowflake, and a raindrop
And certainly it is much less dense than our bodies made of dust..
Therefore, you find us humans crawling on the bottom of this air-filled vessel, and we cannot swim in the thick of the air or float on top; Unless we can reduce the density of our bodies to become equal or less than air.
In nature, there are elements less dense than air, such as helium gas, hydrogen gas and water vapor
So if you blow up a balloon with helium gas or hydrogen gas, you will find that the balloon rises to the top in a direction opposite to the direction of the force of gravity.
As for the water vapor, it will rise in its gaseous state to the top until it reaches the upper layers of the atmosphere, and then it cools and condenses in the form of clouds, so that its density becomes equal to the density of air, so the clouds remain stuck between the sky and the earth as the egg was in the second stage of the previous example.
But when two clouds filled with water vapor collide with opposite electric charges, then the density of the water vapor cloud becomes greater than the density of air, and the water falls to the ground in the form of rain, snow or hail
The densest gas known so far is sulfur hexafluoride
It is a heavy gas, much denser than air.
This means that this gas will always go down and the air above it will always rise.
If we fill a basin with this gas, then put an aluminum canister in it that is very light and of low density
We will notice that the metal can floats on top of the gas because its density is less than its density.
The following video demonstrates this experiment, where you will see that the aluminum can floats, defying the so-called gravitational forces
https://www.youtube.com/watch?v=DzLX96VWTkc
So, the bodies fall to the earth – according to the flat earth theory – because the earth is a decision,
There, in the flat earth, there is always the fullness (the highest) and the fullness (the lower).
And the most dense bodies are at the bottom of the lowest, and the least dense are higher in the upper
As for the spherical Earth model, it is the Earth’s gravity that explains everything
Gravity is nothing but an imaginary chain that extends from the center of the globe and pulls everything towards the center, and holds us, the oceans and the atmosphere, and restricts everyone within its sphere of influence.
To explain the rotation of the spherical Earth, there is a physical law called the law of universal gravitation.
Newton laid the foundations of this law after studying the free fall of the (sin apple) that fell from the forbidden tree to the ground.
Since then, gravity has become the spider web on which modern theories of physics are built.
Gravity according to this law is what makes the earth revolve around the sun, the moon revolve around the earth, and things fall to the earth.
Modern physics claims that any two bodies in the universe create an attractive force between them that is directly proportional to the product of their masses, and inversely proportional to the square of the distance between their centers or the distance between them, and this is called the law of universal gravitation
s = c ( k1 x k2 ) ÷ b2
S: is the attractive force, K1: the mass of the first body, K2: the mass of the second body, B: the distance between the two bodies.
A: It is the gravitational constant between masses
https://en.wikipedia.org/wiki/%D-82%D8%A7%D’D’s_%D8%A7%D8%A%D8%AC%D8%B0%D8 %A8_%D8%A7%D8%A7%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%A%D8%D8%A%D8%D8%A%D8%D8%A%D8%D8%A%D8%D8%A%D8%D8%D8%D8%D8%D8%D8%D8%D8%D about8_A%Dave_Davenad on Pictures Of Instagram account
Is there really the existence of gravity between objects?
Do we notice this thing in our lives?
Will the mountain attract a rock lying meters away?
Or does this just happen in a vacuum?
Okay ; I will explain to you in a simpler form what they mean by the law of universal gravitation, and away from their equations, numbers and decimal places that crack the head, I will explain it through this example:
The Earth is a body that has mass in the universe
The sun is an object that has mass in the universe
There is a distance between these two bodies
According to Newton’s law of universal gravitation, an attractive force will arise between them
The earth attracts the sun and the sun attracts the earth.
But since they claim that the mass of the sun is much greater than the mass of the earth, the attractive force of the sun is much greater
In this case, in order for the earth to resist the great attractive force of the sun that pulls it towards it, and at the same time maintains a fixed distance separating it from the sun, so as not to get too close to it and not to move away from it too much, the earth must revolve around the sun so that its rotation generates a centrifugal force equal to the attractive force of the sun and opposite direction.
- If the movement of the earth’s rotation around the sun slows down, then the attractive force of the sun becomes greater than the repulsive force of the earth’s rotation; Then the sun will attract the earth to it and the earth will evaporate in minutes.
- If the Earth is supposed to increase the speed of its revolution around the sun, At that time, the centrifugal force of the Earth’s rotation will be greater than the attractive force of the Sun, and then the Earth will escape into space and life will freeze on its surface.
As long as the earth rotates at a constant speed proportional to the force of attraction of the sun, the earth will maintain a constant distance from the sun
The same applies to objects on Earth as well.
The earth attracts us to it, and in order for any body to be freed from the earth’s gravity, it must revolve around it at a certain speed so that its movement produces a centrifugal force equal to and opposite to the earth’s attractive force in the direction
And they say that there is an acceleration of the force of gravity
That is, when a body falls freely from above, its velocity is initially zero, then the speed does not start to increase continuously with the increase in the distance traveled by the falling body until reaching the surface of the earth
But this happens because the fall takes place in the natural conditions of the earth surrounded by the atmosphere, that is, the presence of air
In other words: Falling takes place in a container filled with air
In these circumstances, when the air fills our earthen vessel, if you were standing on the edge of a tall tower, and you grasped with your right hand an iron ball, and in your left hand a ball of feathers
At the same moment, you extended both your hands and made the two balls fall to the ground freely
Which one of the two balls will hit the ground first?
Under air conditions, the iron ball will hit the ground faster than the feather ball
First, because of the air resistance, and because the density of the iron ball is much greater than the density of air, and also greater than the density of the feather ball.
But if there is no air; How can the iron ball and the feather ball fall to the ground in a vacuum?
How does falling into a vacuum-filled vessel occur?
Here is the experiment that NASA carried out in a huge room that was almost completely emptied of air, to ensure conditions as close as possible to a vacuum, and the goal is to study the free fall of objects in conditions of airlessness
What was the result?
Watch this video first
https://www.youtube.com/watch?v=E43-CfukEgs
Quietly contemplate the experience!
And they noticed the smooth fall as if there was no acceleration of Earth’s gravity. They watched the ball and the shuttlecock as they fell together, and at the same time they watched the background of the picture or the wall of the room behind them.
And notice that the ball and the shuttlecock fall together, and reach the ground at the same moment
And they noticed that the experiment was done in NASA laboratories, to prove something completely different
The goal of the experiment was to find out the true nature of gravity
But the most important result of this experiment is that the density of air is the most important factor that controls the fall of objects.
With no differences between the density of each of the two falling bodies and the density of the medium in which they fall
There was no fall, but a fall
And they only went down because the Earth (decision)…
Because there is “the top”, and there is “the bottom”.
As a summary of the spherical model, the solar system and galaxies, the imposed gravity is the backbone of this system. If this theory is invalidated, this system collapses and becomes unconvincing.