Of all the four fundamental forces; Gravity is considered to be the weakest.
Following is the arrangement of the four forces from the strongest to weakest;
- Strong Nuclear Force
- The Electromagnetic Force
- Weak Nuclear Force
Gravity holds all the planets, stars, solar systems and even the galaxies together. Gravity holds us! It is because of gravity that we are not flying through space.
When Gravity holds it all together, makes the entire Universe function, then why isn’t it the strongest fundamental force?
Gravity is so weak at the atomic scale that scientists can typically ignore it without incurring significant errors in their calculations.
However, on astronomical scales, gravity does dominate over the other forces. There are two reasons for this:
- Gravity has a long range, and
2. There is no such thing as negative mass.
Gravity is a force that is spread across the Universe. A force that most probably oozes into the higher dimensions. Dimensions which are currently beyond our reach.
Gravity is 10 to the power of 40 times smaller than Electromagnetic Force.
And the reason behind it, according to all the people like me; people who are crazy about String Theory is; unlike the other forces, it leaks in and out of the extra dimensions. We only get to experience a dribble of the true strength of gravity.
The only place where gravity seems to hold its complete strength is inside the Black holes. The only place where Einstein’s General Relativity breaks down. All the known laws of Physics break down at the center of Black Hole, above the speed of light and below Planck’s Length.
And that is why we need The Theory of Everything. To be able to educate ourselves and learn everything there is to learn about the Black Holes, the Universe, the higher dimensions and everything else.