Is there a formula for a black hole?

The radius of a black hole is related to its mass by the simple formula R = 3 M ,where M is the mass of the black hole in units of the sun’s mass, and R is the radius of the Event Horizon in kilometers.

Does E mc2 apply to black holes?

The answer is no. According to our current understanding , all laws of physics break down at the centre of a black hole i.e. at singularities. So e is does not equal mc^2 in a black hole.

How did Einstein’s general theory of relativity predict black holes?

Black holes are regions of spacetime where gravity’s pull is so strong that nothing, not even light, can escape from being dragged in and “eaten.” Einstein’s theory of general relativity predicted the existence of black holes and that, no matter what such an object “eats,” black holes are characterized only by their …

How do you use Einstein’s equation?

E = mc2 Explained. E = mc2. It’s the world’s most famous equation, but what does it really mean? “Energy equals mass times the speed of light squared.” On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.

What does Einstein’s equation of general relativity relate to?

spacetime
In the general theory of relativity, the Einstein field equations (EFE; also known as Einstein’s equations) relate the geometry of spacetime to the distribution of matter within it.

What is Einstein theory of general relativity?

The general theory of relativity (or general relativity for short) is a major building block of modern physics. It explains gravity based on the way space can ‘curve’, or, to put it more accurately, it associates the force of gravity with the changing geometry of space-time.

What happens to matter swallowed by a black hole?

The black hole immediately swallows half the star’s matter while the rest arcs away in long streamers. These rapidly fall back and settle into an accretion disk that steadily feeds material into the black hole, growing so hot that it emits copious x-rays.

How do you find the solution to Einstein field equations?

One can also discover new solutions of the Einstein field equations via the method of orthonormal frames as pioneered by Ellis and MacCallum. In this approach, the Einstein field equations are reduced to a set of coupled, nonlinear, ordinary differential equations.

Are the Einstein field equations four-dimensional?

Although the Einstein field equations were initially formulated in the context of a four-dimensional theory, some theorists have explored their consequences in n dimensions. The equations in contexts outside of general relativity are still referred to as the Einstein field equations.

What is Einstein’s theory of relativity called?

General relativity. The Einstein field equations (EFE; also known as Einstein’s equations) comprise the set of 10 equations in Albert Einstein’s general theory of relativity that describe the fundamental interaction of gravitation as a result of spacetime being curved by mass and energy.

Why did Einstein add the cosmological constant to the field equations?

Einstein modified his original field equations to include a cosmological constant term Λ proportional to the metric. Since Λ is constant, the energy conservation law is unaffected. The cosmological constant term was originally introduced by Einstein to allow for a universe that is not expanding or contracting.