How Does Gravity Work ?

Hi Guys, as I have said today I am going to post about :-

HOW DOES GRAVITY WORK ?



I have already told you about gravity now let us look how does gravity works.

After the discovery of gravity by Isacc Newton at 1687, there was a question 'How does gravity works'. And Isacc Newton proposed that two bodies are tied by a invisible string called gravity.

In 1915, Albert Einstein published the 'Theory of general relativity' where he said that gravity is nothing but only the curvature of space-time fabric (3-dimension+time).


The space time fabric.
 

The space-time fabric is a stretchable cloth which is completely spread over the universe. Mass and enrgy interacts with the space time fabric cuasing a curvature in the space-time fabric as shown above. Due to this curvature the earth and other planets revolve around the sun.

You can make your own space-time fabric as shown below by a simple stetchy cloth tied on every sides, and put a object on the centre of the cloth and roll a marble, and you can see that the marble revoles around the object due to curvature of space. And play with this using different things, rolling the marble faster or slower etc. 

By doing this you can get a clear understanding and also some intresting doubts. And you can also send the image of your fabric through e-mail id, which I have given in the contact page.

  


Therefore, we can saw that gravity is only the curvature of space-time fabric.  



You might have noticed that the marble eventually fell into the object, then can we say that earth and other planets will eventually fall into the sun ???
I will answer this in my next post.   

You may have many other doubts about this topic then you can comment down below, I will try my best to solve your doubts.

THANK YOU


Comments

Post a Comment

Popular posts from this blog

HOW WAS THE UNIVERSE FORMED?

Image
Hello friends, today I am going to post my first topic about :- "HOW  WAS THE UNIVERSE  FORMED OR THE BIG BANG THEORY"  The big bang theory Some of the sub-topics that I will introduce to you are :- 1) About The Word 'THEORY' - From where did the word 'THEORY' came from?            - Meaning of Theory.  2) About the big bang theory - Who proposed the big bang theory and when was it proposed? - What is the big bang theory? 3) Is the universe expanding?  - Will big bang happen again? If yes, then how? ABOUT THE WORD 'THEORY' The word ' Theory ' was derived (came) from a Greek word .  Theory means  a supposition or a system of ideas intended to explain something. In simple words it means that a idea which is used to explain something, it is only a expectations or suggestions of scientist, for example from where did the earth got water but we don't know really because we
Read more

Black hole

Image
Hello  friends,  today I am going to post about :- BLACK HOLE Black hole Some of the sub-topics are :- 1) What Is A Black Hole      - How is a black hole formed?    - About black hole 2) Where Is Our Nearest Black Hole? 3) What Is Light Years? What Is A Black Hole Black hole is formed when the fuel (hydrogen) gets over in the cores of the stars, as there is no fuel, to oppose the force of gravity it starts to shrink and forms  a black hole or a neutron star . It has a very strong gravitational force, even light also can't escape from the gravitational force of the black hole. I have told you about this in my post called 'Nuclear fusion in stars' or you may see this video to know more about how a black hole is formed . Where Is Our Nearest Black Hole? The  closest black hole  we know is V616 Monocerotis , also known as V616 Mon . It's located about 3,000 light years away, and has between 9-13 times the mass of the Sun .
Read more