What's your opinion about CERN - Large Hadron Collider ?

agree or not??? there are aleast 2 dozen expectations during the entire course of its experiments.......

please be more specific.

in general I COMPLETELY agree with ANY experiment performed at CERN. they are NOT idiots and I trust them to do their job.......

which is to understand matter more than we do now.

if it wasn't for other experiments in the past, we'd still be completely ignorant to the fact that atoms even exist.

I personally don't like ignorance and I think spending 15 billion dollars on this is probably going to be worth it.

people and govts don't just blow 15 billion without some type of rhyme or reason. I'm sure the money will give us a return.

bring on the stranglets

Totally agree, research must continue in order to clarify and understand the Standard Model in Particle physics. This will give better view of the atomic structure.

Large Hadron Collider is the biggest, high energy particle accelerator built till now and further upgradation is still in progress. By 2010, Very Large Hadron Collider will be ready.

Agreement or Disagreement is not a matter of worry, because according to the scientific consensus the machine is completely safe and there is no basis of any concievable threat. If disaster was to happen it would have happened already in the test procedures. So, no question of disagreement.

LHC is still operational and presently preparing for the collision of protons. On 10th Spetember the beams (one clockwise and other counter-clockwise) were circulated in the LHC tunnel. On 21 October, 2008 collisions of the two proton beams will take place. So the results are still awaited.

For reading more about its safety visit http://en.wikipedia.org/wiki/Safety_of_the_Large_H...

The USA should have build the 87 km Superconducting Super Collider in Texas 10 years ago, instead of canceling it because it cost them too much.

40 TeV could have been even more useful for science as the already large step to 14 TeV with the LHC (the strongest before the LHC was the Tevatron with 2 TeV)

Now, to what shall I agree? I like CERN. It gave me the Internet.

And a small correction for ingen125: protons hitting other protons or other particles at almost the speed of light are a natural phenomena. Cosmic ray are pretty often protons traveling at nearly the speed of light. The strongest natural particle, ever hitting Earth, was a proton from a distant active galaxy. It had a collision power of 300,000,000 TeV, 20 million times more energy as the LHC. It was only 0.000000000000005% slower as the speed of light.

In the last years, there had been 15 confirmed impacts of such particles, which had been stronger as the LHC collisions. Extrapolating the surface of the detectors to the surface of Earth, that means 100,000 such particles in the last 50 years.

its the next big step in understanding space time energy matter and the big bang it will prove or disprove lot of thing that are now only theories. like every big experiment and event in history it brings its share of fears with it. think about this for a second in the year 999 and 1999 some people thought the world would end, when testing the atomic bomb some scientist believed that it could ignite the atmosphere but here again noting happened. personally id say no risk no fun :P and im very exited to hear from there experiments

i don't think anything bad will happen cern has been colliding particle for years now without creating black hole or any other exotic events. upgrading there sensors and tools wont change anything

For those concerned about 'strangelets'.. these are highly theoretical ideas arising from the successor to string theory and none of that has EVER EVER had any experimental evidence.. not even a suggestion of it.

As for the notion that gamma rays are hitting stationary objects and the LHC protons are hitting moving objects (i.e. each other)... well, no.. that is not true.

Who says we are stationary? As far as the unlucky gamma ray is concerned, it could be WE who are hitting it. The argument as to who is moving and who is stationary is a fundamental part of the understanding within the Special Theory of Relativity.. the first one that Einstein published. The General Theory came later.

Now then, this is the part that seems less obvious but it is in fact the reason the LHC was built. As moving objects get faster and faster.. and as their speed gets close to the speed of light, they get heavier and heavier (strictly speaking, their relativistic mass increases). This means they need more and more energy to make them go faster. ANYTHING that has any mass at all cannot be accelerated to the speed of light because that would require infinite energy which obviously, we don't have.

Protons DO have mass, and so even if you put in gargantuan amounts of energy you can't make them go any faster that a certain proportion of the speed of light. The kind of interaction LHC will be used to investigate require protons to have more energy than we can reasonably engineer with any technology we have today. So how **can** LHC study these, if there is not enough energy? By having two photons hit each other by traveling towards each other, we will get interactions of twice the energy of just one proton but we only have to build a machine that can give a kick of one.

However, remember the comment that no amount of mass can be accelerated to the speed of light? Well, when you do the arithmetic of the special relativity, you find that even if say,, you had two particles traveling towards each other at say 98% of the speed of light, their combined speed is NOT 1.96 times the speed of light.. it is only 99% of the speed of light. This has been found to be true in thousands of experiments. It is quite simply the way the universe is.

However, gamma rays are photons. They have no mass. Therefore they DO travel at 100% of the speed of light. So gamma rays hitting say .. YOU.. as they do every day... do so with more energy than the particles created in the LHC. As you are still around to read this, you will also be around many years after the LHC has finished its work (unless you are hit by a car.. which is far more likely to damage you than the LHC).

Any explosion at the LHC will because the machine broke, not because of the particle interactions when the beams meet.

For those who doubt its value... the understanding we will get from this about the natural world will benefit mankind for hundreds of years. The vast amounts spent in say Iraq and Afganistan... that is the real waste and is far, far larger.

I think it's bad, here's why;

The Large Hadorn Collider will start the particle collisions in late October, many people say that if a black hole is created it would only last a fraction of a second before dissolving, but that's only if Hawking radiation exists, which it may not. Even Stephen Hawking himself has said that the theory may not be true. And the stupid arguement that "It's fine, cosmic rays hit the Earth all the time!" is crap, because those rays hit STATIONARY objects, not objects moving at nearly the speed of light! Particles hitting each other at nearly the speed of light does not happen naturally!

But please keep in mind I don't have a degree in physics or anything, I'm just a fourteen year old with no life and who reads to much into this stuff. ALso, it could create a stranglet or do something completly un-predictable, Humans don't know EVERYTHING about the universe.

First up, shall we debunk the black hollow horror tale. The particle potential that the LHC can produce is many orders of value below the potential of the incredibly some intense potential debris in area, a lot of which we've detected right here in the worldwide as they crash interior the path of the ambience and incredibly some the crust. If there replaced into any hazard the LHC could desire to produce a unfavorable black hollow, we'd already be nutrients for gravity from intense potential galactic radiation. Black holes of the dimensions that the LHC *could* produce are too small to consume a proton, no longer to point us or the Earth, and that they evaporate right into a twig of debris in a greater or less a femtosecond, much less time than it takes a ray of light to holiday throughout a strand of DNA. So, Earth ingesting black holes from the LHC are solid subjects for scifi video clips or conspiracy web content yet no longer for a real scientific communicate. what's greater thrilling is what those particle sprays will let us know related to the early universe below very very small and extremely very heat situations. we could desire to examine related to the situations interior Neutron stars or perhaps decide the commencing place of mass and tie it ideal into gravity. the place this might lead is very lots an thrilling question for the destiny. intense potential physics examine could desire to bring about spin off technologies which comprise achievable fusion reactors, scientific nuclear imaging, new supplies and new computing technologies, the checklist is going on. incredibly some what all of us comprehend approximately quantum mechanics come from intense potential particle colliders. some might argue that it truly is expensive and blue sky examine, however the flair for gaining information of related to the universe around us is unparalled. it would be a tragedy *no longer* to probe the universe to work out what new surprises we are able to stumble on.

I don't know how to sum it up briefly but I see it as a forward step in understanding particle physics-much like building larger telescopes in order to see further. It will probably someday be replaced by an even larger one.

I don't know where some of these horror stories come from that the Collider is dangerous and will create nuclear explosions or black holes or whatever. I don't think they would have built it if it could destroy the world instantaneously.

what is there to disagree with? the lhc is the best thing to happen to science in a long time. the scintists at cern are going to do some really cool stuff with it. i wish them well, and i envy them.

i still think all this lhc hype is an anti-europe smear campaign bcuz the biggest particle accelerator in the world no longer says "made in the u.s.a." on it. you could have had the sssc. but you canceled it.

Okay, I don't see anything in your question to agree with, but heres my opinion:

The CERN may be the next step to figuring out the creation of the universe, but 3.8 billions dollars wasn't worth it.