Search found 567 matches
- Fri Mar 12, 2010 10:29 am
- Forum: End Of The World
- Topic: The Death Star
- Replies: 13
- Views: 19519
Re: The Death Star
On a related note, while searching the news for this item, I came across this article http://www.popsci.com/science/article/2009-12/astronomers-spot-most-massive-star-ever-go-supernova Is there any possibility that such an explosion created a vacuum bubble which is on it's way here? I believe no, a...
- Thu Mar 11, 2010 1:47 pm
- Forum: End Of The World
- Topic: SBU Professor, Puts “Doomsday” Scenarios in Perspective
- Replies: 8
- Views: 13774
Re: SBU Professor, Puts “Doomsday” Scenarios in Perspective
There is a slight difference between the following two sentences: 1. I wonder whether LHC is going to create magnetic monopoples and whether they may be dangerous. 2. LHC will create a magnetic monopole and it will kill us all! That's my way of distinguishing curious people from panic spreaders. Ano...
- Wed Mar 10, 2010 7:10 pm
- Forum: The Accelerator
- Topic: Vacuum
- Replies: 11
- Views: 15671
Re: Vacuum
The dump is just (basically) a block of graphite located in the side branch of beam pipe. When beam is to be dumped it is just kicked by magnets to this pipe branch towards the graphite block. There are no valves and no vacuum windows involved. I'm also not sure about vacuum windows anywhere on LHC ...
- Tue Mar 09, 2010 1:28 pm
- Forum: End Of The World
- Topic: Review of not considered risks (Energia Incognita)
- Replies: 16
- Views: 25138
Re: Review of not considered risks (Energia Incognita)
The article does not look scientific to me, rather it is just written in a style to look scientific. Some claims are directly opposite to conclusions of LHC safety report without any discussion with it. The chapter about rotational energy was interesting, I really wonder if a proton can rotate and i...
- Sat Mar 06, 2010 11:54 pm
- Forum: Science
- Topic: Infinite series in quantum phyics
- Replies: 29
- Views: 37766
Re: Infinite series in quantum phyics
Errm, if 2^128 is a bigger number than the count of particles in the universe, does it have any meaning? Sure it has. In mathematics it's just a number, numbers are not limited by size of the universe. And in reality, it's (for example) number of all possible values you can store in a 128-bit regis...
- Fri Feb 26, 2010 12:57 pm
- Forum: The Accelerator
- Topic: Older Events and discussion 3/22/10
- Replies: 156
- Views: 182927
Re: ** Current Events and discussion **
over = LHC never starts
under = LHC fails
So I guess we need them "just right".
under = LHC fails
So I guess we need them "just right".
- Fri Feb 26, 2010 12:52 pm
- Forum: Science
- Topic: Quark-Gluon Plasma - QGP
- Replies: 7
- Views: 13996
Re: Quark-Gluon Plasma - QGP
I think the magnetic fild generated by moving electric charges has no poles but only closed circlelike magnetic lines and the charged Quarks circle arround them the positiv in one direction, the negative in the other direction. . Sure these are closed lines but they still got "towards south" or "to...
- Fri Feb 26, 2010 12:16 pm
- Forum: Science
- Topic: Can black holes grow?
- Replies: 36
- Views: 49807
Re: Can black holes grow?
I have found this nice page about how falling to a black hole looks like (from the falling observer point of view). It's quite impressive I think.
- Thu Feb 25, 2010 3:57 pm
- Forum: Science
- Topic: Quark-Gluon Plasma - QGP
- Replies: 7
- Views: 13996
Re: Quark-Gluon Plasma - QGP
Yes but they did not mention poles, at least not in the article. "They're moving parallel to vertical" does not tell me if they're going up, down, or some up and some down.
So I assumed they meant poles and wanted to make sure.
So I assumed they meant poles and wanted to make sure.
- Thu Feb 25, 2010 1:37 pm
- Forum: Science
- Topic: Quark-Gluon Plasma - QGP
- Replies: 7
- Views: 13996
Re: Quark-Gluon Plasma - QGP
positively charged quarks may prefer to emerge parallel to the magnetic field in a given collision event, while negatively charged quarks prefer to emerge in the opposite direction It's a bit confusing here. Isn't "opposite direction" to "parallel to the magnetic field" also parallel to the magneti...
- Wed Feb 24, 2010 8:03 am
- Forum: Science
- Topic: How can a black hole have electric charge?
- Replies: 11
- Views: 27137
Re: How can a black hole have electric charge?
Well... if virtual particles don't have to obey laws of real particles, then I'd expect there to be no Hawking radiation - because it is based on assumption that they do.
- Tue Feb 23, 2010 7:52 pm
- Forum: The Accelerator
- Topic: COOL links
- Replies: 57
- Views: 85207
Re: COOL links
Brian Cox is kinda scary sometimes, he may explain a thing or two but then he comes with that "and that's what we need the LHC for, we're gonna make a BIG BANG with it" and the only thing I am missing at that point is the characteristic MUAHAHAHAHAHA of a mad scientist. It almost makes me forget abo...
- Tue Feb 23, 2010 4:19 pm
- Forum: Science
- Topic: Can black holes grow?
- Replies: 36
- Views: 49807
Re: Can black holes grow?
1. Not according to what I have read about it (don't remember where): for an outside observer (at a safe distance etc.) the object never reaches the horizon, but for an observer falling into a black hole the ride down is swift and very short. Yes, it's swift and very short. No problem with it. But ...
- Tue Feb 23, 2010 3:20 pm
- Forum: Science
- Topic: Infinite series in quantum phyics
- Replies: 29
- Views: 37766
Re: Infinite series in quantum phyics
In calculus it is common to add very small distances as far as I know. Distances will be quickly smaller than a Planck distance. Doesn't this mean that you cannot use calculus to compute the position of an object? Doesn't it also mean that it is wrong to say that the geometric series converges to a...
- Sun Feb 21, 2010 12:19 am
- Forum: Quantum Philosophy
- Topic: False Vacuum
- Replies: 38
- Views: 68917
Re: False Vacuum
Many people think that "observation" means that someone is watching. I think the term is quite misleading. Important thing is, on particles level the only way to "observe" is to interact, i.e. exchange photons between particles we are working with and some other instrumentation designed to watch the...