Quantum Gravity

What do you mean by gravitational force?
- Force due to the mass of the body.

Congratulations you have insufficient understanding of gravity.

Today you are going to know the actual concept.

Gravity is that much weak force, that scientists ignores it while performing calculations and experiments in quantum level like colliding the particles.

Even it's particle never get dectected while colliding the particles. Because it has no effect in experiment results.

But in massive objects like galaxies, black holes and white holes, gravity matters.
Even light and time can't escape from it's influence.

QUANTUM GRAVITY

Quantum gravity is the name given to any hypothesis that characterizes gravity in systems where quantum effects cannot be ruled out. Currently, there are no ways to understand quantum gravity completely. Some exploration lines, at various levels of advancement, offer speculative answers to this issue. These speculative quantum-gravity hypothesis are seen as separate research bearings, or as commitments to the shared purpose of actually finding the right causes. The journey to the great quantum hypothesis of gravity is based on a variety of basic issues and has been introduced in some cases as the most important open issue in essential materials science: the "sacred goal" of contemporary imaginary material science.

LOOP QUANTUM GRAVITY

Loop quantum gravity is the most evolved endeavor to take care of the particular issue of finding a quantum adaptation of general relativity, and consequently a certified converge of the reasonable curiosities spoke to by general relativity and quantum mechanics. The hypothesis is predictable with the other principal physical speculations, (for example, the standard model of particle physics), yet it doesn't bring together gravity and these speculations in the feeling of introducing them as appearance of the elements of a solitary physical substance. Loop quantum gravity is situated in the detailing of general relativity, and offers an exact numerical portrayal of quantum spacetime. The granular properties of room can be expressly registered. Specifically, an aftereffect of the hypothesis is that the zone and the volume of any physical surface of district ends up being "quantized" (like the vitality of a hydrogen molecule), and the relating discrete qualities that territory and volume can take have been figured inside the hypothesis. The quantum conditions of physical space are portrayed in the hypothesis by marked charts called turn systems. Every hub of a turn organize speaks to a basic "quantum of room", and the connections between these demonstrates who is close to who, fabricating the spacial structure. The primary deficiency of the hypothesis respects the connection between the Planck scale and naturally visible material science, and the consistency of its old style limit. 

GRAVITON 

According to Quantum Physics, graviton is the elementary particle of gravity like other  three fundamental forces (photons, w and z boson,glucon).Assumption is that, that every body possess gravity due to  gravitons only.
GRAVITON is the type of boson particle.

 Some property of graviton

SPIN: 2

MASS:0

ELECTRIC CHARGE : 0 e

COMPOSITION: ELEMENTARY PARTICLES

ANTIPARTICLE: ITSELF ONLY

Now to understand quantum gravity, scientists trying to merge quantum mechanic theory and general relativity theory.

GRAVITATIONAL LENSING 

You only know that light travels in straight a straight line.

Congratulations, again you are wrong.

If the light passes by massive objects in the universe, it gets bend. The bending of light is known as gravitational lensing.
This methods is used to detect and observe the things like stars and planets. 

There are two types of gravitational lensing- strong and weak depending upon the mass of the object.

When scientists observed the gravitational lensing, they found that the bending of light is not only due to the massive object,
but around 70-80% mass used is of any another thing.And the thing is dark matter.

PLANCK SCALE

Basic Dimensional Content shows that physical marvel(not marvel studios) where quantum gravitational effects are found, described by the length scale known as Planck Scale.

Planck length and is even more smaller than the size of a small single molecule.

To be continued.....

    By Vedansh Tiwari