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Flatland
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When a particle fall past the event horizon, is it possible to escape via quantum tunnelling?
Flatland said:well, from what I understand, quantum tunneling doesn't really have a "direction"
Flatland said:I don't understand, how can it have a direction? It's not like when tunneling happens, a particle travels into any particular direction, it's just there. It doesn't traverse any space.
Flatland said:Ok I kinda understand what you mean in that after a particle tunnels there is a particular direction in relation to where it was previously. But how does that prevent it from escaping a black hole when direction is irrelevant?
Flatland said:Well, granted that no one has made any direct observance, but I'm speaking about in theory. Does the laws of physics prevent this from happening?
simon009988 said:I'm pretty sure I'm worng...but could hawking radiation be defined as a sort of tunneling?
simon009988 said:does one of the particle-antiparticle pair have to tunnel out of the space near the event horizon in order to get out and get recorded as hawking raditation? because won't parts of the wavefunctionof the pair that will escape be kind of in the event horizon.
The event horizon of a black hole is the point of no return, beyond which the gravitational pull is so strong that nothing, including light, can escape. It is the boundary where the escape velocity exceeds the speed of light.
No, particles cannot escape the event horizon of a black hole. The gravitational pull at this point is too strong for anything to escape, including particles and even light.
The event horizon is where the escape velocity equals the speed of light. This means that any object or particle that crosses the event horizon will be unable to escape due to the strong gravitational pull.
There is a theoretical concept known as Hawking radiation, which suggests that black holes can emit particles due to quantum effects near the event horizon. However, this process is extremely slow and does not significantly impact the size or mass of the black hole.
The size of a black hole's event horizon is directly proportional to its mass. The more massive a black hole is, the larger its event horizon will be. This is because the stronger the gravitational pull, the larger the radius at which the escape velocity will equal the speed of light.