Illusion of Gravity: Vairagya is the path.......................

The standard model of particle physics is the theory describing fundamental particles and the fundamental forces. The Standard Model includes 4 fundamental forces included: Electromagnetic force, Strong and Weak nuclear forces and the last one is Gravity.  

Fundamental particles are those particles which have made up everything in this universe and it cannot be divided further. Electron is the fundamental particle because it cannot be divided further but Protons and Neutrons are made up of quarks. So, quarks are the elementary particles.

I'm not going into in right now. I'll cover this later. Today, I’m going to delve into 2 fundamental forces of nature: Electromagnetism and the gravitation—the ultimate quest of life.

According to the present understanding, the forces are hierarchically arranged in strength from high to low as Strong nuclear force, Weak nuclear force, Electromagnetism and then at last the gravity comes. Gravity is so weak at quantum level, almost negligible comparing to Electromagnetism, Strong force and Weak force.

According to Issac Newton’s law of gravitation, the two objects with mass attracting each other and that is known as Gravitational force.

F=-G (m_1 m_2)/r^2 ,  

G=6.67×10^(-11)

Where M1 and m2 are the masses of two objects and r is the distance between centers of their masses.

This is equivalent to the Coulomb’s law, which quantifies the 

amount of force between two stationary, electrically charged 

particles.  Where q1 and q2 are two charged particles and r 

is the distance between two charges. 

If you place two protons a single meter apart, the electromagnetic repulsion between them would be approximately 10⁴⁰ times stronger than gravitational attraction. Gravity is so much weaker than other forces and gravitational mass is so much weaker than electric or colour charges.

Gravity was highly misunderstood until Einstein stepped into it with his grand theory of relativity. He described gravity a space-time distortion caused by the massive bodies. Curved space creates an illusion of force that is attracting the objects towards inside. The curve is not as fine as it is generally depicted, rather it is distorted from all sides.

Gravity is measured in terms of its effect to its surroundings. It is easy to see and measure the effect of gravity on its surrounding space. 

When you apply weight on fluffy foam mattress, the surface is stretched from all sides and this is the feeling of stress. 

The soft surface, push you lower and create a cavity around you. Depending on the Size, mass and density of the object, the gravitational force it exerts varies.

Gravity is a Tensor field. Tensor is used to specify the stress at any point. You can use vector to define tensor.

Tensor field described by using vectors. Vector quantity has both magnitude and direction. For eg, Force(F), Electric field (E), Magnetic field(B), and Velocity. Where we tell the magnitude as well direction.

Stress and Pressure are tensor quantity. Tensor quantity also tell magnitude and direction. 

However, it could be well explained mathematically through covariants and ‘component vectors. I’m describing tensor in a layman term. You can better visualize tensor field in Trampoline park, Not the rubber sheet where you jump and it bounce you back. Gravity doesn’t do that. Gravity is not a Force!

In a trampoline, there is huge puffy foam kindaa huge mattress where you jump and you stuck deep in mattress. Depends on your weight how deep you go. You distort the surface from all sides and if there is a small one near you, it would automatically fall towards you. That very well depicts the tensor field and gravity as well.

When a flat surface is pressed it makes a curve, the vector which was going straight at first has now need more vectors to support its straight line. New basic vectors are needed to support the straight-line vector.

A new right-angle triangle will be created underneath it. That area describes the tensor field. This area holds the necessary stress to keep object in the pit. This stress is created at every point in the curved path. Tensor is an abstract phenomenon; it could be felt but not easy to explain.

Straight line goes down to curve and bend towards the weight. Thus, it appears planet are orbiting around. When something goes in circular path, it is subject to centripetal force. It is then the object feels the gravity and change its velocity to balance the centripetal force. Object accelerate enough to balance the gravity. It also depends on rotation speed and angular momentum of an object how good it is fighting against the opposite force. 

This gives an illusion of gravity, though it’s just the phenomenon of changing space time due to the working of other forces.

In Special relativity, Einstein equate gravity and acceleration. In my earlier video I explained this. When you are moving in a space ship with a constant speed and suddenly there is a change in speed and you fell backward. This time you feel the same weight of yours as you feel on earth. You feel gravity. 

According to Einstein, Acceleration and Gravity are indistinguishable! Acceleration doesn’t mean change in speed always, when you change direction it also causes you to lean towards the sides. 

When an object in a circulatory path, it is always in an accelerated motion. It is the moment when an object feel gravity because of change in speed and direction. This breaks the symmetry of a constant motion.

Electromagnetism deals with the electromagnetic force that occurs between electrically charged particles. A single charge particle, either positive or negative creates an electric filed in all directions throughout the entire universe. The movement of electric charges produce an electric current and that subsequently produces a magnetic field around it. 

The strength of electric field depends on the amount of charge inside an object. Electric field lines go away from the positive particle and go towards the negative particles that’s why like charges repel and unlike charges attract each other.

There is an equal number of positive charges and negative charges inside an object that cancel each other out and net charges passing through the object is zero. Thus, No net electric field passes through the object.

Moving charge particles creates a magnetic field around or a magnetic field in lined the charges in one direction either way the current is produced. Magnetic field flows from North pole to the South pole. 

The earth magnetic field lines flow from North pole to South pole and particles get trapped in Earth magnetic field. Like poles repel; unlike poles attract. When like poles comes in near their field interact and they push one another and when north pole and south pole come together their filed lines go from North to south. 

To be continued......