Have you ever imagined from where Gravity appeared? How force of gravity is exerted on every matter in the Universe?
When you stumble, you fall towards the earth’s surface, likely to fall towards the Earth’s centre. Certainly the question pops up! Why we land on the ground when we jump up, instead of floating off to space?
The answer indeed, turns up to the effect of gravity!
When Sir Isaac Newton encountered a mass body falling down upon him, this situation literally moved him. He realized that the mass body did not decide to ascend up the sky but to descend downwards.
His depiction of an imaginary force that keeps us on the ground and what make things fall justifies the concept of gravity as a force that any two mass bodies exert on each other. Thus any mass body in contact with the Earth, experiences a force of attraction, although the earth experiences same force on the body but, due to very large mass of the earth, effect is negligible on earth. He stated that force of attraction between two mass bodies corresponds to the gravity between them. So it was confirmed that a body having mass also possess gravity. In addition, different mass bodies correspond to different values of force of interaction with other bodies.
Galileo experimented by throwing down two different mass bodies at same speed and instances of time from the same point of contact. In the process he realized that the two bodies of different masses touched the ground at same time having same acceleration. This was indeed a contradiction to famous Aristole’s theory of gravity which stated that objects fall at a speed proportional to their masses. Aristole’s theory was therefore discarded.
Einstein found motivation through Galileo’s theory on gravity. While we took Newton’s theory of Gravitation as a gospel, Einstein confronted a loophole in Isaac Newton’s depiction and suggested that Newton failed to explain the appearance of gravity in nature.
Einstein intuited that the sensation of riding an ascending elevator is similar to the sensation of gravity. In no time, this became insight that, acceleration and gravity are not just similar but is the same thing.
Not only this, he realized a scenario of gravitational pull between Sun and our planet which was contradictory to Newton’s theory that force of attraction between two mass bodies pull them towards each other. Einstein argued upon the orbital path of planets while they are influenced by the strong gravitational pull of the Sun.
After a decade long struggle to find answer of this beautiful question, he intuited one day that, gravity is a curve in space that wraps around a body (larger mass) such as a star like sun and planets. Another body (smaller mass) in its vicinity experience the pull due to the curving of the area surrounding the first body and it certainly moves towards the depth of the curve. The smaller mass body attains the orbital path around the larger mass body, hence not falling into it. This was the happiest thought of Einstein in his own words. And his revolutionary theory changed our perception about the gravity.
At SDRO, we believe, the real knowledge arrives through practical implementation of such scientific breakthroughs. Every scientific phenomenon can easily be understood through practical applications. Through Stellar Curiosity Workshop, we aim to make a difference by enhancing your understanding as well as helping you to witness various processes occurring in nature.