مثال:
The Schwarzschild radius ( Rg ) of an object of mass M is given by the following formula, in which G is the universal gravitational constant and c is the speed of light: Rg = 2GM/c2.
The Schwarzschild radius or the gravitational radius is a physical parameter in the Schwarzschild solution to Einstein's field equations that corresponds to the radius defining the event horizon of a Schwarzschild black hole.
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The Schwarzschild radius of an object is proportional to its mass. Accordingly, the Sun has a Schwarzschild radius of approximately 3. 0 km ( 1. 9 mi ) , whereas Earth's is only about 9 mm ( 0. 35 in ) and the Moon's is about 0. 1 mm ( 0. 0039 in ) . The observable universe's mass has a Schwarzschild radius of approximately 13. 7 billion light - years.
The Schwarzschild radius calculator lets you obtain the gravitational acceleration on the surface of a black hole, also called the event horizon. Due to the nature of black holes, we can calculate the event horizon ( also called Schwarzschild radius ) and the black hole gravity from just the mass of the black hole. We will also explain below what is the Schwarzschild radius and what the black hole equation means.
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