Question

What's Singularity, Why doesn't black holes follow laws of physics and quantum mechanics.

Answer 1

In the centre of a black hole is a gravitational singularity, a one-dimensional point which contains a huge mass in an infinitely small space, where density and gravity become infinite and space-timecurves infinitely, and where the laws of physics as we know them cease to operate.

According to the "cosmic censorship" hypothesis, a black hole's singularity remains hidden behind its event horizon, in that it is always surrounded by an area which does not allowlight to escape, and therefore cannot be directly observed.

Here's one contradiction:

"In quantum mechanics, if a reaction is possible, the opposite reaction is also possible, Witten explained. Processes should be reversible. Thus, if a person can be swallowed by a black hole to create a slightly heavier black hole, a heavy black hole should be able to spit out a person and become a slightly lighter black hole. Yet nothing is supposed to escape from black holes."

The principal reason is because black holes haven't been completely understood, currently some discoveries are being made:

"Physicists looked to the idea of entropy, a measurement of disorder or randomness. The laws of thermodynamics state that in the macroscopic world, it's impossible to reduce the entropy of the universe — it can only increase. If a person were to fall into a black hole, entropy would increase. If the person were to pop back out of it, the universal entropy tally would go down. For the same reason, water can spill out of a cup onto the floor, but it won't flow from the floor into a cup.

This principle seems to explain why the process of matter falling into a black hole cannot be reversed, yet it only applies on a macroscopic level.

Physicist Stephen Hawking famously realized that on the microscopic, quantum mechanical level, things can escape from black holes. He predicted that black holes will spontaneously emit particles in a process he dubbed Hawking radiation. Thus, quantum mechanics refuted one of the basic tenets of black holes: that nothing can escape."

This means that black holes do obey certain laws that haven't been perfected yet, there should be 2 things following: 1) an experiment that confirms hawking radiation 2) a more complete theory of black holes that supports the observations