The End of the World?

[IndorilTheGreat]

Well, apparently they haven't actually made the particles collide yet. The REAL experiment is to happen in any time from a month, to a year.

 

More info here:

 

http://www.swissinfo.ch/eng/news/internati...52000&ty=ti

[UQForgotten]

About those black holes and all the misconceptions about them...

 

 

 

 

What we would call a black hole is actually only the event horizon surrounding it. The event horizon is the area surrounding the core, from which no light can escape because of the gravitational escape velocity beyond that point exceeding the speed of light (about 299792.458 km/sec or 186282.397 miles/sec.)

 

From our point of view, however, the central core which contains *ALL* the mass (in physics terms called the singularity) of a black hole would be infinitely small, regardless of its total mass, as the gravitational pull in the core has managed to overpower all other counteracting nuclear forces within the matter it has absorbed.

 

But the total mass, and thus total gravitational effect on its surroundings, of a black hole is still finite.

 

If we somehow (which is completely unfeasible and unthinkable!) managed to compress our own sun enough, beyond what is called the Schwarzschild radius for an object of our sun's mass (= the radius of the event horizon I mentioned earlier, in our sun's case about 3 km or just under 2 miles), we would create a black hole. But this black hole sun would *NOT* have any kind of increased gravitational effect on whatever orbits it, including our own Earth, as its mass still remains the same! Just because we compressed our sun into a black hole doesn't mean it magically increases its mass and starts sucking in things left and right. The mass of the sun would just occupy an infinitely smaller space than it does now and no light would reflect off of it or escape it beyond a certain distance from the singularity. Anything within the event horizon, the Schwarzschild radius (in the sun's case, like I mentioned, within a radius of 3 km from the singularity), would be seen by us as the blackest thing imaginable. What we popularly call a black hole.

 

Now, if we want to turn the Earth into a black hole we'd have to compress it to well below an inch in diameter (roughly 0.7 inches in diameter or a radius of 0.35 inches to be more precise) for the gravitational pull of its concentrated point of mass to be able to overpower the combined nuclear counterforces within the matter itself.

 

Given this you can hardly even imagine how small a black hole composed of two collided elementary particles would be. Even if they did manage to make a black hole out of two collided elementary particles the resulting black hole would still only have the total mass and gravitational pull of... *BADABING!*... two elementary particles! Hardly stuff that swallows the world whole within minutes... :wink:

 

All black holes have a *FINITE* mass depending on how much matter they have accumulated. The theorized MBH's (Microscopic Black Holes) would have an equally microscopic mass and resulting gravitational pull.

 

 

 

Cheers, UQF

[IndorilTheGreat]

About those black holes and all the misconceptions about them...

 

 

 

 

What we would call a black hole is actually only the event horizon surrounding it. The event horizon is the area surrounding the core, from which no light can escape because of the gravitational escape velocity beyond that point exceeding the speed of light (about 299792.458 km/sec or 186282.397 miles/sec.)

 

From our point of view, however, the central core which contains *ALL* the mass (in physics terms called the singularity) of a black hole would be infinitely small, regardless of its total mass, as the gravitational pull in the core has managed to overpower all other counteracting nuclear forces within the matter it has absorbed.

 

But the total mass, and thus total gravitational effect on its surroundings, of a black hole is still finite.

 

If we somehow (which is completely unfeasible and unthinkable!) managed to compress our own sun enough, beyond what is called the Schwarzschild radius for an object of our sun's mass (= the radius of the event horizon I mentioned earlier, in our sun's case about 3 km or just under 2 miles), we would create a black hole. But this black hole sun would *NOT* have any kind of increased gravitational effect on whatever orbits it, including our own Earth, as its mass still remains the same! Just because we compressed our sun into a black hole doesn't mean it magically increases its mass and starts sucking in things left and right. The mass of the sun would just occupy an infinitely smaller space than it does now and no light would reflect off of it or escape it beyond a certain distance from the singularity. Anything within the event horizon, the Schwarzschild radius (in the sun's case, like I mentioned, within a radius of 3 km from the singularity), would be seen by us as the blackest thing imaginable. What we popularly call a black hole.

 

Now, if we want to turn the Earth into a black hole we'd have to compress it to well below an inch in diameter (roughly 0.7 inches in diameter or a radius of 0.35 inches to be more precise) for the gravitational pull of its concentrated point of mass to be able to overpower the combined nuclear counterforces within the matter itself.

 

Given this you can hardly even imagine how small a black hole composed of two collided elementary particles would be. Even if they did manage to make a black hole out of two collided elementary particles the resulting black hole would still only have the total mass and gravitational pull of... *BADABING!*... two elementary particles! Hardly stuff that swallows the world whole within minutes... :wink:

 

All black holes have a *FINITE* mass depending on how much matter they have accumulated. The theorized MBH's (Microscopic Black Holes) would have an equally microscopic mass and resulting gravitational pull.

 

 

 

Cheers, UQF

 

:blink:

 

Man, I feel like an idiot right now...

 

I'm not so worried if a black hole forming as I am of the Human race getting overly eager and firing up the machine TOO much. You know, "giving it too much juice."

 

I just hope that some future civilization doesn't find out about our demise and use the term, "Curiosity killed the cat..." (Nor saying that it will happen, this is just speculation! :yes: ).

[Tchos]

"It's only a movie!" I hear some people tell me when I complain about the gross scientific illiteracy and grievous mistakes and fundamental flaws in the most basic of scientific understanding in the majority of movies or TV shows that involve any sort of threat to humanity. And yet this is the fruit of that tree of scientific ignorance. Wild speculations with no basis in reality (infuriatingly called "theories", which has a very different meaning in a scientific context), fear-mongering, and legions of people picking up their internet torches and pitchforks to assault the castles of these "mad scientists" who, contrary to some popular opinions, know what they are doing.

 

This is why I say the makers of these movies have a basic responsibility to do the basic research, so that people do not absorb their hideously warped portrayals of science and incorporate them into their worldviews. There are plenty of ways of making a disaster or a threat to humanity that are actually real and viable and would work well in a plot.

[shadow1513]

yes basic reseach would be greatly appreciated but not too in detail

and stephen hawkings is way overrated

but "black holes" are in theory very dense objects with a big gravitational pull, light bends around them and makes them invisible we think they exist because a telescope saw gasses siwling around an empty area i can't remember if this is right to create one intentionaly would require millions of atoms colliding together to create a single super-dense atom it would be difficult , indefinately close to being impossible not something we could do in even a few hundred years if we tried hundreds of times every day we might have better tecnology to do this later on but who needs a possibly theretical "black hole" any way i don't see how it's going to feed me.and if someone has the time to build a giant partical accerator and collide atoms over and over agin has way too much time.

[Tchos]

1. No one is trying to create a black hole. That was never the purpose of the LHC. If any scientist even mentioned a black hole, it was probably in an illustrative or comparative sense because the general public has no idea what subatomic particles are.

 

2. The definition of "basic research" is "research carried out to increase understanding of fundamental principles, with no direct or immediate commercial benefits." This is exactly what the LHC is for, which you think is so worthless. I keep forgetting that the biggest misunderstandings about science are due to a confusion between scientific terms and colloquial terms.

 

3. It's "Hawking".

 

4. The world is not here simply to feed you. And if you think doing pure science is a waste of time, you should say the same about video games. Creating them, modding them, playing them. It sure doesn't feed you. How about you feed yourself, or, if you must be fed, then sit quietly at the kids' table and let the grownups talk about grownup things.

[varen]

1. No one is trying to create a black hole. That was never the purpose of the LHC. If any scientist even mentioned a black hole, it was probably in an illustrative or comparative sense because the general public has no idea what subatomic particles are.

 

2. The definition of "basic research" is "research carried out to increase understanding of fundamental principles, with no direct or immediate commercial benefits." This is exactly what the LHC is for, which you think is so worthless. I keep forgetting that the biggest misunderstandings about science are due to a confusion between scientific terms and colloquial terms.

 

3. It's "Hawking".

 

4. The world is not here simply to feed you. And if you think doing pure science is a waste of time, you should say the same about video games. Creating them, modding them, playing them. It sure doesn't feed you. How about you feed yourself, or, if you must be fed, then sit quietly at the kids' table and let the grownups talk about grownup things.

Well said.

[pedantic]

I thought current thinking was that a black hole, having absorbed too much matter, would simply pop up as a new star elsewhere in the ethereal world of space. I'll have to Log in to the Open University again, and check that of course.

 

Just a thought to whomever keeps posting this quote:

 

Lol, we all could die^^. You know what the LHC is? The Large Hadron Collider will produce tiny patches of very high energy by colliding together atomic particles that are travelling at very high speed, recreating energies and conditions that existed billionths of a second after the start of the Big Bang. This could also create tiny Black Holes^^. Check our final countdown^^

 

They say, what goes around comes around. Maybe this is how it all started :biggrin:

[dezdimona]

Lol, we all could die^^.

life and death are all one,once you conceive life,death is only a matter of time.

[Tchos]

When a scientist says destroying the world is "improbable", he means it's about as improbable as all the molecules in a hostess' undergarments leaping one foot simultaneously to the left in accordance with the theory of indeterminacy. What would colloquially be called "impossible".