what are black holes . how they are formed??
donisgone:
yup bro Me too faced the same
Lemme answer, mortals!
Hydrogen is the main component of stars
It's the main fuel of a star
Ugh, I'll better play PPAP ! Fuc the spammers!
yup bro
these guys are actually destroying this app
The fuc, each time I try to answer, it shows an error !
yup
I nearly missed it by a fraction of sec
Answers
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Black hole is a region of space time with nearly infinite curvature, due to the presence of mass at infinite density that warps the fabric of s-t, as predicted by the general theory of relativity.
Since a black hole has mass and it curves space-time to such a depth, the gravitational field around a black hole is intense, strong enough that once you cross the event horizon, the escape velocity ya need to move out is more than the speed of light !
The reason black holes are black(pretty much not on the quantum aspect) is because not even radiation, aka massless photon that interact with gravity somehow, can escape at their speed of c. The center of a black hole has a singularity, the zero (or rather one to be precise) dimensional point of infinite density where everything, our maths and our laws, literally blow up, infinity plays it part, and we aren't good at guessing its moves!
Well this was the relativistic view of black holes as per Einstein.
Quantum mechanically, at the event horizon of a black hole (if it's not a naked singularity) particles pop into existence by taking up the energy in the vicinity from space time and out of 'em, instead of annihilating, one (prolly anti one) of them falls into the black hole and make it evaporate by giving out energy, Hawking radiation (this guy has a lot of cool stuffs need after him!)So, black Holes ain't completely black!
How they are formed: you know (prolly) that any star produces aenergy due to fusion, a part of this energy is given out as radiation (light) but most of it help balace gravity by acting counter to it. In fusion energy is released as elements(lighter nuclei) fuse to form heavier ones, but this doesn't continue for all elements, once Hydrogen to helium to a plenty more reaches iron, no more fusion takes place (iron is pretty heavy!) And hence no more energy is released and gravity wins out, and the star implodes (collapses on itself under gravity to a dense point, if violent accompanying an explosion, what's left is black hole)
P.S. too lazy, fingers breaking ! TOO MUCH FOR 5 POINTS, I GUESS!
Since a black hole has mass and it curves space-time to such a depth, the gravitational field around a black hole is intense, strong enough that once you cross the event horizon, the escape velocity ya need to move out is more than the speed of light !
The reason black holes are black(pretty much not on the quantum aspect) is because not even radiation, aka massless photon that interact with gravity somehow, can escape at their speed of c. The center of a black hole has a singularity, the zero (or rather one to be precise) dimensional point of infinite density where everything, our maths and our laws, literally blow up, infinity plays it part, and we aren't good at guessing its moves!
Well this was the relativistic view of black holes as per Einstein.
Quantum mechanically, at the event horizon of a black hole (if it's not a naked singularity) particles pop into existence by taking up the energy in the vicinity from space time and out of 'em, instead of annihilating, one (prolly anti one) of them falls into the black hole and make it evaporate by giving out energy, Hawking radiation (this guy has a lot of cool stuffs need after him!)So, black Holes ain't completely black!
How they are formed: you know (prolly) that any star produces aenergy due to fusion, a part of this energy is given out as radiation (light) but most of it help balace gravity by acting counter to it. In fusion energy is released as elements(lighter nuclei) fuse to form heavier ones, but this doesn't continue for all elements, once Hydrogen to helium to a plenty more reaches iron, no more fusion takes place (iron is pretty heavy!) And hence no more energy is released and gravity wins out, and the star implodes (collapses on itself under gravity to a dense point, if violent accompanying an explosion, what's left is black hole)
P.S. too lazy, fingers breaking ! TOO MUCH FOR 5 POINTS, I GUESS!
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