Nice to see those positive comments!
The full workings for the mass growth, surface area and mass growth are given in the video. Entropy and temperature also dealt with briefly
All good stuff!
Such concept don't jive well with Universe / Observable Universe. "Universe" seem to cover it all - no?
Yes :-D
//
AOT!! Almost On Topic :-D
But now that it is a bit older, what exist in addition to the expanded universe?
an where is that? //
Earlier, I talked about the density of a black hole i.e. the average density of the spherical volume within its event horizon.
I've found an interesting fact!
A billion solar mass black hole, the kind that lurks in the centre of galaxies, would have an event horizon 3 billion kilometres in radius. That's roughly the distance of Neptune from the Sun.
That would give the black hole an average density of roughly 1/1000 of a gram per cubic centimetre, which is comparable to the density of air!
Therefore, if you could enclose the solar system out at the distance of Neptune within a giant sphere, and fill it with air, the enclosed volume would have the equivalent density of a billion solar mass black hole!
I've found an interesting fact!
A billion solar mass black hole, the kind that lurks in the centre of galaxies, would have an event horizon 3 billion kilometres in radius. That's roughly the distance of Neptune from the Sun.
That would give the black hole an average density of roughly 1/1000 of a gram per cubic centimetre, which is comparable to the density of air!
Therefore, if you could enclose the solar system out at the distance of Neptune within a giant sphere, and fill it with air, the enclosed volume would have the equivalent density of a billion solar mass black hole!
How fast does material accelerate to the singularity once past the event horizon? Also, since the core is a singularity, what establishes the size of the BH? Is it the rate at which material enters?Earlier, I talked about the density of a black hole i.e. the average density of the spherical volume within its event horizon.
I've found an interesting fact!
A billion solar mass black hole, the kind that lurks in the centre of galaxies, would have an event horizon 3 billion kilometres in radius. That's roughly the distance of Neptune from the Sun.
That would give the black hole an average density of roughly 1/1000 of a gram per cubic centimetre, which is comparable to the density of air!
Therefore, if you could enclose the solar system out at the distance of Neptune within a giant sphere, and fill it with air, the enclosed volume would have the equivalent density of a billion solar mass black hole!
I earlier talked about Dr.PhysicsA.
TBH, he lost me with his Christoffel symbols and Kroenecker Deltas. I have always been useless at Algebra.
Einstein Field Equations - for beginners! - YouTube
But happy days. I bought some new computer speakers.
Excellent result. This is the way forward.
My mother would summon me into her room on occasion. She admonished me that all my friends were "Nuts".
All I could say, was that if I dismissed my friends on the grounds of being "Nuts", I would have no friends at all.
TBH, he lost me with his Christoffel symbols and Kroenecker Deltas. I have always been useless at Algebra.
Einstein Field Equations - for beginners! - YouTube
But happy days. I bought some new computer speakers.
Excellent result. This is the way forward.
My mother would summon me into her room on occasion. She admonished me that all my friends were "Nuts".
All I could say, was that if I dismissed my friends on the grounds of being "Nuts", I would have no friends at all.
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