Recreating big bang on the 10th of september - opinions?

Question

scientists are trying to recreate the moments after the big bang in a 27 km wide underground tube called a Large Hadron Collider

what are your opinions?

Answer 1

I agree with doug, what he says is true.

The LHC is the greatest achievement of man`s intellect. It`s the step we as humans take to understand our world. Why should we be afraid.

Now if you do want to now the physics behind the LHC go to youtube

and see some of the videos made by the scientist and you to will be convinced that you don`t need a rockect to get out of the earth.    

Answer 2

It should be very interesting; there are many discoveries the LHC could make, and some theories which could be proved by the experiments. It will help us to better understand some of the mysteries of universe and possibly even open up new avenues of scientific and technological advancement which will benefit the entire human race.

I also implore you to ignore all the scare-mongers and their theories of destroying the planet with the LHC; the fact is these people do not have a d**n clue about even the simplest aspects of the LHC and they certainly don't have any understanding of quantum mechanics, particle physics or any other of the very complicated subjects that are what the LHC is all about. Of course neither do I, but I also refuse to give in to the primitive response of "I don't understand it so I must be afraid of it". I look forward to seeing what the results of the experiments show, and so should everyone.

Answer 3

If this is the experiment at Cern in Switzerland I'm a bit concerned because they say there is a very great chance that they may create black holes.

They don't know how big the black holes will be and how long they will exist and whether they might grow.

I'm serious about this.

If it's not the Cern experiment then I don't know what you're talking about but if you know anyone with a spare seat on a rocket, let me know ok :-)

Answer 4

Scientist are willing to take those chances, when they first detonated the first nuke there was a chance that the chain reaction wouldn't stop which would cause a nuclear explosion literally the size of the Earth. I havent heard of this but ill look it up. I doubt that it will create a black hole because they would need an extreme amount of gravity to compress the mass to a small enough volume to make a black hole and quite frankly i don't think we have that kind of tech. but we might so you never know. I'm just wondering that if they do that could they blow the whole planet up itself? I mean the big bang was one insane explosion with massive amount of energy, the temperatures would reach billions of degrees and do what will it do to our atmosphere because since the heat will travel up and air will become extremely hot will that have any effect. What about the massive amounts of radiation that will be released when. There a lot of other things in the big bang that could change the planet forever, so i think we may have more to worry about than just a black hole. This experiment sounds extemely risky, thanks for telling me about it i think ill go look for it, sounds very interesting.

Answer 5

Don't worry too much about it destroying the earth. A "blue ribbon panel of experts" was commissioned to reassure everyone that this would not happen. The conclusion was that if it could destroy the earth by vacuum decay (my favorite senerio), the chances of us being here today would be astronomically small because of similar natural collisions in the past. This is false logic, because the chances of humans popping up at any particular point in space after 13.5 billion years is astronomically small regardless, yet we're here anyway because the universe is astronomically big (by definition, in fact). I mean, what does non-unity odds of us being here even mean?

Their arguments were nonetheless very persuasive and a judge has dismissed remaining doubters' concerns based on legal technicalities such as jurisdiction and an expired deadline for public review. Besides, if it did destroy the earth, it would probably happen too fast for you to even notice it. So, like I said, don't worry.

What is correct to say, is that similar natural collisions are so frequent, the relative incremental risk of *future* destruction of the earth due to running the collider is small. This means if the absolute risk of the accelerator causing *future* destruction were significant, the odds of me surviving a natural destructive event long enough to finish this sentence would be negli

Answer 6

I think it is a bit scary, nobody know for sure what will happen or if it will work.

Answer 7

I have just been reading about this experiment on the internet. It certainly seems crazy. It would be preferable that the scientists don't go ahead, and there are other experts trying to get a court injunction to prevent them from doing it. What I don't understand is why is the government in Switzerland letting them go ahead with something as potentially dangerous? We have enough problems on this earth without having something as potentially dangerous and unknown as the projected experiment. How any group of scientists think they have the right to do such a stupid thing amazes me.  

Answer 8

The LHC is intended to look for the Higg's boson and physics beyond the standard model of particle physics such as super symmetry and dark matter/energy candidates. The standard model does not predict that the LHC will produce mini-Black Holes; however, if physics beyond the standard model is found to hold, then mini-Black Holes might be possible. These mini-Black holes might be produced at a rate in the order of one per second. According to the some calculations, these ‘holes’ are harmless because they will quickly decay via ‘Hawking radiation’ and explode into a shower of particles. The problem with ‘Hawking radiation’ is that it too is unproven physics and, thus, might not be a correct explanation for the disappearance of mini-Black Holes. An unlikely, accumulation of mini-Black Holes could be a ‘small’ problem.

Below I will detail some of the physics that the LHC is attempting to explore. The weak interaction is mediated by spin-1 bosons which act as force carriers between quarks and/or leptons. There are three of these intermediate vector bosons, which were all discovered at CERN in 1983. They are the charged bosons W+ and W- and the neutral Z0. Their masses are measured to be: -

M(W) = 80.3 Gev/c² and M(Z) = 91.2 Gev/c²

which gives their ranges as: -

R(W) ≈ R(Z) ≈ 2 x 10^-3 fm

Their decay modes are as follows: -

W+ -> l+ + vl

W- -> l- + vl'

Z0 -> l+ + l-

Where the l's stand for leptons and the v's for neutrinos with the prime ' indicating an anti-neutrino. This introduction sets the scene for what follows!

The intermediate vector bosons gain their mass from the Higgs boson. Please allow me to explain. During the nineteen-sixties the theoretical physicists Glashow, Salam and Weinberg developed a theory which unified the electromagnetic and the weak nuclear forces. This theory is known as the ‘electroweak’ theory, it predicted the neutral vector boson Z0, and weak nuclear force reactions arising from its exchange, in what are known as neutral current reactions. The theory also accounted for the heavy charged bosons W+ and W-, required for the mediation of all observed weak interactions, known as charged current reactions. These particles were discovered in 1983.This unified theory is a ‘gauge invariance’ theory, which means that if the components of its underlying equations are transformed, in position or potential, they still predict exactly the same physics. Because the force carrying particles (Z0, W+ and W-), of this theory, are massive spin-1 bosons a spin-0 boson is required to complete the theory. This spin-0 boson is the as yet unobserved ‘Higgs’ boson.

The masses of the force carrying bosons (Z0, W+ and W-), for the electroweak theory, are derived from their interaction with the scalar Higgs field. Unlike other physical fields, the Higgs field has a non-zero value in the vacuum state, labelled φ0, and furthermore this value is not invariant under gauge transformation. Hence, this gauge invariance is referred to as a ‘hidden’ or ‘spontaneously broken’ symmetry. The Higgs field has three main consequences’. The first, is that the electroweak force carrying bosons (Z0, W+ and W-) can acquire mass in the ratio: -

M(W) =cosθ(W)

_____

M(Z)

Where θ(W) Is the electroweak mixing angle. These masses arise from the interactions of the gauge fields with the non-zero vacuum expectation value of the Higgs field. Secondly, there are electrically neutral quanta H0, called Higgs bosons, associated with the Higgs field, just as photons are associated with the electromagnetic field. Thirdly, the Higgs field throws light on the origin of the quark and lepton masses. In the absence of the Higgs field the requirements of gauge invariance on the masses of spin-½ fermions (quarks and leptons etc,) would set them at zero for parity violating interactions (non-mirror image interactions). Parity is a conserved quantity in strong nuclear force and electromagnetic interactions but is violated in weak nuclear force interactions, which would make quark and lepton masses zero in this later case. However, interactions with the Higgs field can generate fermion masses due to the non-zero expectation value φ0 of this field, as well as with interactions with the Higgs bosons. These interactions have a dimensionless coupling constant g(Hff) related to the fermions mass m(f) by the expression: -

g(Hff) = √ (√2G(f)m(f) ²)

Where G(f) is the Fermi coupling constant and f is any quark or lepton flavour. However, this theory, that the fermion masses are mediated by their interaction with the Higgs field, does not predict their mass m(f). However, with the future discovery of the Higgs boson the above equation can be used to confirm the observed coupling constant g(Hff).

At CERN, the Large Hadron Collider (LHC) will search for the Higgs boson at an energy of up to 1 TeV by colliding protons in the reaction: -

p + p -> H0 + X

Where X is any state allowed by the usual conservation laws. The upper atmosphere is a more energetic 'particle physics laboratory' than the LHC. If cosmic rays, slamming into the upper atmosphere, create mini-black holes then these decay rapidly! However, it may be that mini-black holes are not produce - at all - in high-energy particle collisions.

Answer 9

Um, "Yay Science!"