1) Message boards : LHC@home Science : And LHC is down again. (Message 21618)
Posted 14 Nov 2009 by Greg
Post:
There was a theory put forward a while ago that the discovery of a naked higgs particle would be so abhorrent to nature that \'the universe\' would conspire to prevent it.

I was pretty sceptical at the time to say the least, but birds and baguette...?
2) Message boards : LHC@home Science : Black hole question (Message 20629)
Posted 6 Oct 2008 by Greg
Post:
In a discussion about the LHC and worlds near end (Ha!) I came across the question what forces a black hole can actually exhibit?

The corresponding formulas mention Mass, Angular Momentum and the electric Charge as factors in the equation describing a Black hole.

http://en.wikipedia.org/wiki/Kerr-Newman_metric

The question that came up was if the Black Hole actually exhibits an attracting force on particles of the opposite polarity (and correspondingly a repulsing force on particles of equal polarity) beyond the Event Horizon?

I think that, as photons are transmitters of information and forces within electromagnetic fields, that the information that the particular charge is there can not possibly go through the Event Horizon and therefore, beyond it, no forces on charged particles through the charge of the black hole are exhibited.

I expect that the energy of the charge actually contributes to the mass of the black hole and that this is the whole effect measurable beyond the Event Horizon.

Can someone enlighten me please? :D



Trying to explain this without resorting to pages and pages of at times complex equations is quite a challenge, but I\'ll try.
All the fundamental properties of a particle (charge, angular momentum, mass etc.) can be thought of as being the information that is required to define that particle. Due to a quirk of relativity, (time-dilation of objects approaching an event horizon as seen by a more distant observer) the event horizon of a black hole retains an imprint of that information for every particle that crosses it.

That information remains visible to the external universe even though the particle has crossed the event horizon and is cut off from the external universe.

I hope that helps you with your question, but if anyone else has a better analogy please post it.
3) Message boards : LHC@home Science : LHC shut down for months after helium leak (Message 20579)
Posted 1 Oct 2008 by Greg
Post:
Nature Magazine writes that a faulty weld between two conductors
provoked a short which caused a small explosion sending a piece of metal to perforate a tube carrying liquid helium.


This well could explain the recent UFO reports in Switzerland describing a craft 27 km in diameter floating at an altitude of around 6 km, and spitting out the occasional tiny black hole.



Uunfortunately it means I\'m going to have to cme up with another excuse when the boss asks for \"that thing I asked for\" other than \"A mini-black hole ate it!\"
4) Message boards : LHC@home Science : LHC shut down for months after helium leak (Message 20503)
Posted 23 Sep 2008 by Greg
Post:
... a tonne of liquid helium leaked into the tunnel ...

Does that mean everyone is now speaking in high pitched Mickey Mouse voices?

Mike


Could be worse! a little anti-helium and everyone starts sounding like the late-great Barry White.
5) Message boards : LHC@home Science : LHC shut down for months after helium leak (Message 20442)
Posted 20 Sep 2008 by Greg
Post:
Oops!
6) Message boards : Cafe LHC : where can i order my free black hole? (Message 20436)
Posted 20 Sep 2008 by Greg
Post:
My boys have already got a black hole in their room. I think all the socks go there.

If you keep a black hole in your washing machine you\\\\\\\\\\\\\\\'ll find it selectively swallows only one sock of a pair of socks. One of those mysteries of the universe.

...and in obeyance of the 'Pair Reduction' principle, the other member of the pair will move away from the black hole at great speed (for socks) until it reaches the top/front of the washing machine (depending on whic sort you have) so that it becomes the *first* sock you find when unloading.
7) Message boards : Cafe LHC : LHC@home T-shirt (Message 20435)
Posted 20 Sep 2008 by Greg
Post:
If anyone can supply them in 10XL I might finally have something trendy to keep frost off my car!

Seriously though, if someone told me there was an LHC@HOME shirt in XL i'd reach for my wallet.



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