BLACK HOLE DEFINITION FREE

Its radius is known as Schwarzschild radius. It is not a physical surface, but a sphere surrounding the black hole through which matter and light can pass only inward toward the mass of the black hole.

The event horizon is the boundary in space time that makes where the escape velocity from the mass is the speed of light. There are two basic parts of a black hole the Singularity and the Event horizon. but if we if we compress the radius of earth till nearly 8.77 mm and mass of earth will be same as before, then value of escape velocity from earth surface will be equal to speed of light means earth will start behaving like a black hole. Įg- We know that, radius of earth is nearly 6400 km and escape velocity from earth surface is nearly 11.2 km/s.

BLACK HOLE DEFINITION FREE

suppose the radius is so small that the value of escape velocity ( Formally, escape velocity is the speed an object must attain to ” break free ” of gravitational attraction of another body ) is more then or equal to speed of light, then that spherical body will behave like a black hole. The escape velocity ( V ) from such a dense material will be very high. Then there will be a time when object will be start to behave like a black hole.

suppose due to some reason the volume goes on decreasing while, the mass remains the same. Equation and Conditions for black holeįor more better understanding, Consider a spherical body of mass M and radius R. On 10 April 2019, the first direct image of a black hole and its vicinity was published. Few years ago black holes were just an imagination, but On 11 February 2016, the LIGO scientific collaboration and the virga say about the first direct detection of gravitational waves, which also represented the first of black hole merger.

Black hole definition