Pekora-senpai!That's true that any blob of matter can become a black hole if compressed to a certain limit, pekoFor Sun that would be a 3 km radius, for Earth - the size of a penny...The Tolman–Oppenheimer–Volkoff limitAnd if it is a woman around thirty, you would need to compress her to the size of a single neutron, to create a black hole, peko.Eh? Then why did she disappe-...The reason why Marine disappeared after becoming a black hole...Is the Hawking radiation, peko.Ho- Hawking radiation?It's the physical process that determines the lifespan of the black hole, pekoA black hole continuously emits energy into surrounding space and evaporates its mass, pekoThe physical vacuum is said to be always "boiling" - it is not exactly empty, but consists of particle-antiparticle pairs that continuously appear and annihilate.
At the event horizon (the smallest radius around a black hole at which it is still possible to not fall into it) of the black hole, such pairs may be spontaneously separated by the black hole gravity - then one of the particles falls into the black hole, while another flies away.
This process, leading to an outflow of particles from a black hole, is called the black hole evaporation. And it is obvious from the conservation laws, that if there is an outflow of mass, the mass of the black hole itself must decrease by mutual annihilation of particles and antiparticles that fall into the black hole.
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Pekora-senpai!
That's true that any blob of matter can become a black hole if compressed to a certain limit, peko
And if it is a woman around thirty, you would need to compress her to the size of a single neutron, to create a black hole, peko.
Eh? Then why did she disappe-...
The reason why Marine disappeared after becoming a black hole...
Is the Hawking radiation, peko.
Ho- Hawking radiation?
It's the physical process that determines the lifespan of the black hole, peko
A black hole continuously emits energy into surrounding space and evaporates its mass, pekoThe physical vacuum is said to be always "boiling" - it is not exactly empty, but consists of particle-antiparticle pairs that continuously appear and annihilate.
At the event horizon (the smallest radius around a black hole at which it is still possible to not fall into it) of the black hole, such pairs may be spontaneously separated by the black hole gravity - then one of the particles falls into the black hole, while another flies away.
This process, leading to an outflow of particles from a black hole, is called the black hole evaporation. And it is obvious from the conservation laws, that if there is an outflow of mass, the mass of the black hole itself must decrease by mutual annihilation of particles and antiparticles that fall into the black hole.
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Leave a comment