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Large Hadron Collider Goes Live September 10th
Naznarreb writes "CERN announced today that the first attempt to circulate a beam through the Large Hadron Collider will be on September 10th, 2008. You can read the press release here. They also announced the event will be webcast live. According to the release, they're just planning to run a few tests laps, not smash any particles, so the world won't be ending quite yet." And despite that September 10th date, according to the BBC, "On 9 August, protons will be piped through LHC magnets for the first time."
No. Cool down. The reason that everyone has been waiting for the last couple of months is for the system to cool to less than 2 K. That is what is limiting the operation of the complete LHC.
The other LHC
Less than 2K what? Two thousand Centigrade? Fahrenheit? Damn n00bs and their lack of units, don't you realize that's the kind of mistake that swallows worlds in a fit of microblackholish pique???
2 K is 2 Kelvin, not 2 thousand. The "damn n00b" was using the proper standard scientific units for temperature.
There is virtually zero chance the LHC will produce micro-black holes.
Even if it somehow does, they will very likely dissipate in fractions of a second.
Even if they doe form, and are stable, they will be so small so as to sink to the center of the earth and star devouring it at the alarming pace of 1 atom a year.
For frame of reference you have about 7,000,000,000,000,000,000,000,000,000 atoms in your body.
So it would take billions of lifetimes (or more) for you to even notice the effects if one were stuck in you.
Sorry to self-reply, but even once it got going, it wouldn't destroy us immediately. A black hole with the mass of the Earth still only has Schwarzschild radius of 1.5cm.
http://hyperphysics.phy-astr.gsu.edu/hbase/astro/blkhol.html
And, like you, the "damn n00b" missed the joke.
Yeees.. His predictions always seem to come true.
Assuming you count people interpreting them to fit past events as coming true. I can't remember a single instance of someone interpreting Nostradamus as predicting something *before* it actually happens, and in fact having just that happen.
"Two degrees Kelvin" is actually improper terminology. Kelvin does not use the degree simple. You simply say "Two Kelvin."
On another hope, I really hope you weren't joking with that. If so, then I just got whooshed!
You don't know much about physics, do you? Gravitation acting alone would indeed cause it to oscillate forever. Think of it in terms of conservation of energy: potential energy varies with height, and since total energy must be conserved, every time the velocity is reduced to zero the height has to be the same.
The only factor that will reduce its energy is when it physically impacts other particles, resulting in a net gain of mass and a conservation of momentum (velocity decreases proportionally). Since it would be microscopic in size, it wouldn't hit much matter anyway so the deceleration would be slow... it also wouldn't cause much damage because it wouldn't consume much matter for the same reason.
Alexander Peter Kristopeit bought his basement from his mommy for one dollar.
No it's not. The Corsairs saying it is (very likely) in reference to the Warcraft II cheat code. Which, I'm guessing, is a reference to something else.
If I am mostly carbon, (...)
You're not.
7,000,000,000,000,000,000,000,000,000 atoms (7E27) / 6.0221E23 atoms/mole = 11623.85214 moles of atoms. Using the oversimplification of the body being entirely water, you have a 2:1 ratio of hydrogen atoms to carbon. Thus, 11623.85214 / 3 = 3874.617382 moles of water molecules. 3874.617382 x 12.011 g / atom C (46538.02937 g C total), + (3874.617382 * 2 * 1.00797) g / atom H (7810.996164 g H total) = 54349.02553 grams, or 54.34902553 kilograms, or 119.8190911 pounds (* 2.20462262 lbs / kg) - approximately two-fifths of the weight of a 300 pound American. Stick that in your pipe and --induce high energy collisions with-- it.
That date is picked from the fact that the accelerator guys tell us they need two months from the end of the beam pipe bake-out (right about this weekend) to get "a circulating beam".
Now, what does this mean?
It means that there are good odds that they will be able to get at least one pilot bunch of protons in stable circulation by that date. We're not talking about the full ~3600 bunches and most important: There will be no beam in the other direction. IOW all we will be doing up until some time November is to do comissioning with beam-gas interactions (there is always residual gas in the beam pipe).
If we're lucky we will have a few weeks of actual collisions this year. I don't want to think of the odds that they will be at anything approaching 10 TeV. 14 TeV is already out of the question due to a couple of bending magnets that can't sustain the current needed.
This press release just shows that management want to report something big. In fact it would probably be better for the accelerator people to commision both beams at the same time but that would of course postpone the big party...
Following that point of view, we don't know that black holes exist either. However, we have observed (in cosmic rays) particles with more energy than the particles at LHC will create, and these particles did not destroy the earth.
The rest of the world is still scratching it's head trying to figure out what significant event happened on the 9th of November.
I was born.
In the US, dates are written month first, day second. So 9/11 means 11th of september in the US. In pretty much the rest of the world, dates are written day first, month second. So 9/11 means 9th of November in the rest of the world. Thats the joke, if you didn't get it.