THE THEORY OF GENERAL RELATIVITY

            THE THEORY OF GENERAL RELATIVITY

“General theory of relativity” was given by Albert Einstein in 1915. “General Theory of relativity” has been described as most beautiful of all existing physical theories. This theory of relativity generalizes the Newton’s law of universal gravitation. It has provided unified description of Gravitation, space and time. Some prediction done in this theory differs significantly from classical physics.

Before we explain the general theory of relativity, we have to understand that this theory is not a law and hence it doesn’t have a definite statement like law of gravitation and law of charges. This theory predicts some phenomenas . These are listed below:-

1).As light goes closer to sun or any star it bends toward the sun twice as much as classical physics predicts.

Explanation:-  

Light bends because of gravitation lensing (bending of light around massive objects). This was proved by professor eddington experiment during solar eclipse in 1919. now this is important principle in astrophysics.

2).gravitation time dilation-slowing the time.

Explanation:- this means that in a place where there is no gravitation field or less gravitation field, time will be slow there. Clocks that are far from massive bodies (or at higher gravitational potentials) run more quickly, and clocks close to massive bodies (or at lower gravitational potentials) run more slowly. For example, considered over the total time-span of Earth (4.6 billion years), a clock set at the peak of Mount Everest would be about 39 hours ahead of a clock  set at sea level.

3).the universe is expanding and its far ends are moving at a speed greater than speed of light.

Explanation:- The galaxies outside of our own are moving away from us, and the ones that are farthest away are moving the fastest. This means that no matter what galaxy you happen to be in, all the other galaxies are moving away from us. The universe has no center; everything is moving away from everything else.