Einstein and Black Hole
Do General Relativity is connected to Black Hole? If yes then how? Today, we will try to get answer.
Now, what is General Relativity?
General Theory of Relativity is geometrical representation of gravity. When we put mass on the fabric of space-time the gravity is generated. In practical aspect Newton’s gravity is best. When it comes to explain the motion of planets from our solar system newton fails. Here comes the Einstein in the picture. General Relativity explains the motion of our solar system.
General Relativity is represented by
Rμν = Ricci Tensor
R= Ricci scalar
gμν = Metric Tensor
Tμν = stress-energy tensor
Actually this is not just a single equation. These are Einstein Field Equations which is set of ten equations.
Recently LIGO has detected gravitational waves. That gravitational waves gives hint about existence
of General Relativity. Some scientists believes that gravitational waves were created by collision of two Black Holes. Back in 1915 when Einstein introduced General Relativity it was tested in solar eclipse by Eddington in 1919. General Relativity have passed all the test until now.
Karl Schwarzschild got the solution of Einstein field equations which gives description about point mass. After many physicists give solution to Einstein field Equations which found the object. An object that nothing can escape from that due to its gravity. That object now a days known as black Hole. Black Hole is having too much strong gravity.
When something falls in Black Hole the information of object is destroyed. Black Hole is having regions like event horizon and singularity.Event horizon is boundary of space-time from which nothing can escape. Singularity is located at the center of Black Hole. Singularity smallest point of mass in space-time. All the laws of physics Breakdowns at Singularity.
To form a Black Hole we just need to compress physical size less than event horizon. Our sun will be converted into Black Hole if its compressed to radius of 3 kilometers.
First image of Black Hole is just released. We First generation ever to witness the First image of Black Hole. So there is no doubt about existence of Black Hole.