What are gravitational waves and why this discovery is important for us?



What are Gravitational waves? Why this discovery means a lot?

                                    
Physicists have announced the discovery of gravitational waves.

“We have detected gravitational waves. We did it,” said David Reitze, executive director of the Laser Interferometer Gravitational-Wave Observatory (LIGO), at a press conference in Washington.


LIGO (Laser Interferometer Gravitational-Wave Observatory) has been searching for these cosmic ripples for over a decade.

What are gravitational waves ?

Gravitational waves are distortions or ‘ripples’ in the fabric of space-time. But how can space ripple? According to Einstein's general theory of relativity, space-time a four-dimensional "fabric," which can be pushed or pulled as objects move through it. These distortions are the real cause of gravitational attraction between the objects. If you drag your hand through a still pool of water, you'll notice that waves follow in its path, and spread outward through the pool. Albert Einstein predicted the existence of gravitational waves in 1916 in his general theory of relativity, according to him, same thing happens when a heavy object moves through space-time. Here heavy object doesn’t mean 100kg or 1000 kg mass rather it should be as heavier as black hole or neutron star.


 Suppose if you throw a particle of sand in a pool of water, what will you observe? Surely you’ll observe nothing because the particle is not that much heavy. The strongest gravitational waves are produced by catastrophic events such as colliding black holes, coalescing neutron stars or white dwarf stars.
Gravitational waves transport energy as gravitational radiation.

Why discovery means a lot?

Gravitational waves give physicists another way to observe space. For example, waves produced   from the Big Bang would tell us a little more about how the universe formed. Waves. Because these waves form when supernovae explode or black holes collide so detecting these waves would give physicists a new insight into the cosmic events that produced them.

What are gravitational waves and why this discovery is important for us? What are gravitational waves and why this discovery is important for us? Reviewed by Ashu Kushwaha on 07:42 Rating: 5

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