Black Hole Density: Facts & Info

Thread starter Astronomy1st
Start date Mar 4, 2010
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Black hole Density Hole

In summary, the density of a black hole is the amount of mass contained within a given volume, and is incredibly high due to all of the mass being concentrated into a single point called the singularity. It is much denser than other objects in the universe, including neutron stars, and can change as the black hole grows in mass. The density is not uniform, with the highest density at the singularity and decreasing as you move away. The density is measured by dividing the mass by the volume, but due to the infinitely small volume of the singularity, the density is technically infinite.

Mar 4, 2010

Astronomy1st

Edit: thanks for the help nicksauce

Last edited: Mar 5, 2010

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Mar 5, 2010

nicksauce

Science Advisor

Homework Helper

This is really easy to do.

R = 2GM/c^2 -> M =c^2/2G

V = 4/3 * pi * R^3

Divide M by V to find the density, and put in the numbers.

1. What is the density of a black hole?

The density of a black hole refers to the amount of mass contained within a given volume. It is extremely high, as all of the mass of a black hole is concentrated into a single point called the singularity.

2. How does the density of a black hole compare to other objects?

The density of a black hole is incredibly high, making it one of the most dense objects in the universe. It is much denser than even the most dense neutron stars, with a density that can reach billions of times that of the sun.

3. Can the density of a black hole change?

Yes, the density of a black hole can change as it grows in mass. As more matter falls into the black hole, its density increases. However, the density at the singularity remains constant, as it is already at the maximum possible density.

4. Is the density of a black hole uniform?

No, the density of a black hole is not uniform. It is much higher at the singularity, where all of the mass is concentrated, and decreases as you move away from the singularity.

5. How is the density of a black hole measured?

The density of a black hole is calculated by dividing its mass by its volume. However, since the volume of a black hole's singularity is infinitely small, the density is technically infinite. This is why the term "singularity" is used to describe the center of a black hole.