Sir Isaac Newton was best known for his work on GRAVITY.
A better version of this article is — THEORY OF RELATIVITY IN BRIEF which is also a featured article on our blog. So, we recommend you to read that article instead of this, and, also that article describes RELATIVITY completely.
According to Newton’s theory of gravity, every object in the universe attracts every other object in the universe.The strength of gravity according to Newton’s theory is given by:
- It fails for strong gravitational fields like a neutron star.
- The way Newton described gravity was not correct.
The effects in a gravitational field are same as the effects in accelerated bodies or objectsor in other words you can’t be 100% sure that if you are at rest in a gravitational field or you are accelerating uniformly. We can understand it by the given two cases:
- A man is in a rocket at rest on Earth, he drops a ball in the rocket.
- The man, now, is in the same rocket without any contact with a gravitational field and the rocket is accelerating in ‘empty space’ at acceleration of 9.8 m/s2 (m/s2 is unit in which acceleration is measured.) (9.8 m/s2 is the acceleration due to gravity on Earth.) Now, again he drops a ball.
About the Author – Madhur Sorout
Sorout is currently a last third year high school student, living in India. His main fascination lies in Physics mainly in the field of general theory of relativity and topics related to it like Big Bang, Black Holes and Evolution of Universe. He likes to make out the meaning of what he see in this universe. He loves to read books by Stephen Hawking, Neil deGrasse Tyson and other authors (and Physicists). He is an atheist and believes that Physics completely rejects the idea of a god. He likes to play cricket also and he wants to continue down the route of research in Theoretical Astrophysics.