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Does the universe have a Schwarzschild radius?
The observable universe’s mass has a Schwarzschild radius of approximately 13.7 billion light-years….Parameters.
| Object | Observable universe |
|---|---|
| Mass | 8.8×1052 kg |
| Schwarzschild radius | 1.3×1026 m (13.7 billion ly) |
| Actual radius | 4.4×1026 m (46.5 billion ly) |
Is it correct to think of the Schwarzschild radius as the radius of a black hole?
For the Earth, that radius is 0.9 cm. And a large mountain might be smaller than a nanometer. That radius is called the Schwarzschild Radius. And so, an object smaller than its Schwarzschild radius is known as a black hole.
What is the meaning of the Schwarzschild radius of a non rotating black hole?
radius of the event horizon
The Schwarzschild radius is the radius of the event horizon surrounding a non-rotating black hole. Any object with a physical radius smaller than its Schwarzschild radius will be a black hole.
What is the Schwarzschild radius in astronomy?
Schwarzschild radius, also called gravitational radius, the radius below which the gravitational attraction between the particles of a body must cause it to undergo irreversible gravitational collapse. This phenomenon is thought to be the final fate of the more massive stars (see black hole).
What is Schwarzschild radius Quora?
Schwarzschild radius is the radius below which the gravitational attraction between particles of a body cause it to undergo gravitational collapse. Schwarzschild showed that any mass can be a black hole if that mass can be compressed into a small sphere of radius R which is called Schwarzschild radius.
What is the radius of the universe?
about 46.5 billion light-years
The radius of the observable universe is therefore estimated to be about 46.5 billion light-years and its diameter about 28.5 gigaparsecs (93 billion light-years, or 8.8×1026 metres or 2.89×1027 feet), which equals 880 yottametres.
What is the Schwarzschild metric used for?
In Einstein’s theory of general relativity, the Schwarzschild metric (also known as the Schwarzschild solution) is an exact solution to the Einstein field equations that describes the gravitational field outside a spherical mass, on the assumption that the electric charge of the mass, angular momentum of the mass, and …
What is the Schwarzschild radius in simple terms?
The Schwarzschild radius, or gravitational radius is the radius of a sphere that has certain properties: if all the mass of an object is compressed within this sphere, the escape speed from the surface of the sphere would equal the speed of light. It is a characteristic radius associated with every quantity of mass.
Is the Schwarzschild radius a real radius?
As such, calling this a Schwarzschild radius doesn’t really make sense, as it has nothing to do with the Schwarzschild solution besides sharing a superficial similarity in how we express their definitions. Just because he calls it a Schwarzschild radius doesn’t mean that it is one.
What is the radius of the observable universe?
According to the Wiki on the Rs, the Rs of the observable universe is 13.7BLY. https://en.wikipedia.org/wiki/Schwarzschild_radius(The observable universe’s mass has a Schwarzschild radius of approximately 13.7 billion light-years.[7][8])
What is the Schwarzschild solution to the Einstein field equations?
The Schwarzschild solution of the Einstein field equations requires that all of the mass of the universe is concentrated in a physical singularity at $r=0$, and the rest is vacuum.
https://www.youtube.com/watch?v=iJVtUzn95N8