Introduction to Gravitational waves.

Gravitational waves are transverse form of waves that are generated in the spacetime fabric due to the disturbance created from a source in a point of spacetime. These waves are similar to the waves generated in a water source when a pebble is thrown into it.

The waves spread out and reach distant galaxies making differences in the spacetime. And causing slight changes in time and space.

In order to detect a gravitational wave ,it should be having a minimum energy or a frequency. Weak form of gravitational waves are very hard to detect ,the source of these high energy gravitational waves can be from a supernova explosion of two black holes.

When two black holes collide a huge amount of energy is released which gets distributed uniformly along the spacetime but eventually as they travel long distance their energy decreases. As there are not nearby blackholes around Earth, studies related to gravitational waves is not making much progress, but LIGO which has been the gravitational detection programme has been trying to develop instruments that can even detect gravitational waves of very small frequency.

These waves plays a very important role in understanding how the spacetime influence matter , it's influence on time . And also it gives information about the source which caused these waves in the sense we can know about black holes in universe, how far they are from us .