Black Holes Explained
Black hole is a mysterious object of modern astronomy that is impossible
to define. It is also difficult to measure or calculate its volume because
of the extreme gravity of the center of the object. Nevertheless, this
article will present an overview of black holes' structure and function in
science, providing you with some information on their history and
practical applications.
Black hole was first proposed by German astronomer
Karl Schwarzschild in 1915 when he derived its mathematical equations
based on Albert Einstein's theory of general relativity. A black hole's
event horizon is a boundary in spacetime beyond which events cannot affect
anything outside itself; while inside it, time slows down (for people &
objects) and becomes infinite while space becomes more curved than how it
appeared without the presence of any mass (see Schwarzschild radius ).
Schwarzschild radius : The Schwarzschild radius (sometimes historically
referred to as the gravitational radius) is a physical parameter that
appears in the Schwarzschild solution to Einstein's field equations,
corresponding to the radius defining the event horizon of a Schwarzschild
black hole. It is a characteristic radius associated with any quantity of
mass. The Schwarzschild radius was named after the German astronomer Karl
Schwarzschild, who calculated this exact solution for the theory of
general relativity in 1916. The Schwarzschild radius is given as
{\displaystyle r_{s}={\frac {2GM}{c^{2}}},}{\displaystyle r_{s}={\frac
{2GM}{c^{2}}},} where G is the gravitational constant, M is the object
mass, and c is the speed of light



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