LHC switch-on fears are completely unfounded: new research paper

well fear or no fear we will find out everything pretty soon.
However, if we will be sucked into a micro black hole I sure hope there will be internet.

This is NOT true from many simple reasons. At first, the highly energetic collisions comming from Universe are always formed by the single accelerated particle, not by whole compact beam of protons - this changes the situation a lot because of surface tension phenomena.

At second, such particle collides with solar corona or Earth's atmosphere, the density of which increases gradually and rather slowly: if some metastable products are temporarily created by such collisions, they're formed in rather sparse environment, where they cannot grow and to propagate at distance.

At third, the highly energetic particles from Universe are moving so fast, they cannot interact with matter of Sun for very prolonged time. While in LHC the products of head-to-head beam collisions can obtain the zero momentum towards the Earth, so they would have enough time to interact with it with full consequences.

And at the very end: we don't know about true reason of occasional solar corona flares and magnetic storms. Maybe they're really initiated by strangelet impacts - why not?

Are the conditions with regard to cosmic rays, the same as that will occur in the LHC?

It seems a weak argument to point to some other, though similar phenomenon and say, well its not happening over there, so...

The argument should be won or lost resoundingly within experimentally verified and accepted theory,..

At first, the highly energetic collisions comming from Universe are always formed by the single accelerated particle, not by whole compact beam of protons - this changes the situation a lot because of surface tension phenomena.

At second, such particle collides with solar corona or Earth's atmosphere, the density of which increases gradually and rather slowly: if some metastable products are temporarily created by such collisions, they're formed in rather sparse environment, where they cannot grow and to propagate at distance.

At third, the highly energetic particles from Universe are moving so fast, they cannot interact with matter of Sun for very prolonged time.

While in LHC the products of head-to-head beam collisions can obtain the zero momentum towards the Earth[...]

[...]so they would have enough time to interact with it with full consequences.

...the "beam" is nothing but a series of individual impacts. There are no "surface tension phenomena" involved....

Nope, here's a synergy - the simple negation isn't argument. After all, this is why, we aren't using a single protons, when preparing black hole in RISC and LHC.
http://news.bbc.c...7613.stm
http://unisci.com...1012.htm

..there exist countless objects such as the Moon, with little or no atmosphere, but which still have not been eaten by miniature black holes...

They're still full of craters. By my opinion, it's a big mistake to consider, only ultradense state of matter (a black hole) can become dangerous for Earth existence. Or to believe, such BH cannot interact with Earth fast. For example, the danger of strangelet is based on the assumption, it can react with ordinary matter under formation of another strangelets by avalanche-like, explosive mechanisms.

But by my understanding, even the simple compact droplet of rather common particles, like the neutrons can become dangerous for Earth. Such dense neutron fluid would expell the protons and electrons from atom nuclei, thus changing them into another droplets of free neutrons, stabilized by their surface tension. Such droplets cannot grow too much, but they can replicate by mutual collisions.

Such reaction will simply create a cloud of tiny neutron stars, which will propagate through Earth like nuclear explosion. Even at the case, only subtle amount of Earth's matter would convert itself into its more dense state, such accident will be disastrous, because of extreme energy densities of such transmutation. We are playing with the forces, which we don't know at all, we have no simulation for such scenarios, because the theorists simply NEVER CONSIDERED THEM seriously.

..Cosmic rays with energies exceeding 10^20 eV have been detected. That is >10 million times more energetic than LHC..

..the only collisions happening in LHC is one particle colliding with another, even just a 3 particle collision is extremely unlikely...

And at the very end: we don't know about true reason of occasional solar corona flares and magnetic storms. Maybe they're really initiated by strangelet impacts - why not?

..Cosmic rays with energies exceeding 10^20 eV have been detected. That is >10 million times more energetic than LHC..

I know, they're formed by single particles, the energy of which is given by high speed. They will penetrate the Earth in microseconds, with high momentum towards the Earth. Neverthelles, some strangelets are considered as the reason of particular earthquakes.

http://www.space....513.html

Why I should believe some anonyms here and not the informations, presented in mainstream press?

Sometimes I really wonder, does Alizee have some kind of odd ms excel based database with all these links sorted by keywords and headlines? It would only take seconds to copy these links here and enjoy the never-ending discussions.

Sometimes I really wonder, does Alizee have some kind of odd ms excel based database with all these links sorted by keywords and headlines? It would only take seconds to copy these links here and enjoy the never-ending discussions.

I thought he used a tldr generator and appended random links from the Stop CERN site.

...the "beam" is nothing but a series of individual impacts. There are no "surface tension phenomena" involved....

Nope, here's a synergy - the simple negation isn't argument. After all, this is why, we aren't using a single protons, when preparing black hole in RISC and LHC.
http://news.bbc.c...7613.stm
http://unisci.com...1012.htm

Of course, neither of those suggest there is a "surface tension" that is overcome by a "stream" of protons, as they both involve using complete ions, not streams of protons. So, your "evidence" that I am wrong says nothing of the sort.

This is because there is no "stream" of protons to overcome any "surface tension" that might exist, whatever you think "surface tension" is. Your so-called "stream" of protons is, in fact, a near-vacuum of individual high-speed protons, which naturally strike as a bunch of single protons.

..there exist countless objects such as the Moon, with little or no atmosphere, but which still have not been eaten by miniature black holes...

They're still full of craters.

By that logic, I could use the existence of people who died from neck wounds as evidence of vampires. After all, *some* of them *could* have had the wounds created by vampires.

By my opinion, it's a big mistake to consider, only ultradense state of matter (a black hole) can become dangerous for Earth existence.

As you are not an expert in physics, your opinions on what we should or should not worry about are pretty much moot. Nor is anybody making such an assumption, so your "warning" is pointless posturing. There are a number of suggested reasons for fearing the LHC that don't involve black holes, such as strangelets or neutron droplets. All have the same problem: unless either incredibly uncommon or outside the reach of the LHC, all would have already happened many times and thus revealed themselves by the damage they do. And a significant number are complete nonsense based upon a complete misunderstanding of the physics involved, such as the black hole theory.

Or to believe, such BH cannot interact with Earth fast.

This is a perfect example. Black holes could be created by the LHC. However, any such black holes, reacting "fast" or "slow", that can be created by the LHC *are not a threat to Earth*. The physics that show this are so solid that it is far more likely that black holes do not exist than that such a black hole could actually do the damage you are afraid of. The failure of the black hole to instantly evaporate is a violation of the very physics that predict black holes in the first place.

For example, the danger of strangelet is based on the assumption, it can react with ordinary matter under formation of another strangelets by avalanche-like, explosive mechanisms.

Correct. Which, if true, means one of four things:
1) This cannot happen.

2. This can happen, but it requires too much energy for the LHC.

3. This can happen, but it happens so rarely that we have little to fear from the LHC.

4. The Earth, Sun, and everything you see in the sky has already been eaten by strangelets and we are already dead, because it would have happened countless times before, all over the universe, because it is so easy.

But by my understanding, even the simple compact droplet of rather common particles, like the neutrons can become dangerous for Earth.

That would be because your "understanding" is complete nonsense. The polyneutron theory, if correct, claims that all kinds of common nuclear reactions, including a large number of experiments, already created the polyneutrons you fear. Notice how we haven't been destroyed by the chain reactions? The creators of the theory admit that the experiments that caused them to come up with the theory would already have created these chain reactions if the predicted chain reactions were real.