Search found 567 matches

by Kasuha
Fri Feb 19, 2010 1:46 pm
Forum: Science
Topic: How can a black hole have electric charge?
Replies: 11
Views: 10128

How can a black hole have electric charge?

General relativity theory predicts that a black hole can have electric charge. That's fair, I can (theoretically) make a black hole out of protons only and that'd be a lot of electric charge concentrated in it. Let's assume I have created such a black hole and let's assume its charge did not get neu...
by Kasuha
Fri Feb 19, 2010 12:24 pm
Forum: Science
Topic: Can black holes grow?
Replies: 36
Views: 9700

Re: Can black holes grow?

@2.0: The original question was, if due to relativistic effects any object falling to the black hole takes infinite time to reach the event horizon for a stationary observer in safe distance, how can the black hole ever "swallow" anything from the point of view of the same observer - and so if what ...
by Kasuha
Wed Feb 17, 2010 11:15 pm
Forum: Quantum Philosophy
Topic: False Vacuum
Replies: 38
Views: 13969

Re: False Vacuum

I can't say I understand the article completely but it seems that it finds possible problem in intergalactic space or some even larger empty spaces rather than in anything related to particle generators.
by Kasuha
Mon Feb 08, 2010 4:30 pm
Forum: Science
Topic: LHC as detector of relict neutrinos?
Replies: 4
Views: 2273

Re: LHC as detector of relict neutrinos?

The problem with Ice Cube is, it only detects neutrinos with energy of 50 GeV or higher. I don't think it is going to detect a single relict neutrino over its lifetime. It's like we'd try to detect relict radiation using a gamma ray detector.
by Kasuha
Mon Feb 08, 2010 12:04 pm
Forum: Science
Topic: Can black holes grow?
Replies: 36
Views: 9700

Re: Can black holes grow?

Let's assume we have a black hole the size (weight) of a sun, and we are orbiting it on a track with diameter of 2 AU (so we are in place where space is not too distorted). Let's assume we have an infinitely strong rope and we'll start to unwind the rope towards our black hole to measure the "real" ...
by Kasuha
Mon Feb 08, 2010 11:36 am
Forum: Science
Topic: LHC as detector of relict neutrinos?
Replies: 4
Views: 2273

Re: LHC as detector of relict neutrinos?

In my opinion, an interaction of beam proton with a neutrino can happen anywhere along the beam trajectory. I don't see why it should have higher chance in RF. Problem of existing neutrino detectors including Ice Cube or Gran Sasso is the fact that they only detect neutrinos of high enough energy. V...
by Kasuha
Wed Feb 03, 2010 4:35 pm
Forum: Science
Topic: Can black holes grow?
Replies: 36
Views: 9700

Re: Can black holes grow?

My own theory (I'm NOT scientist) is, there's an event horizon radius for the black hole at its current mass and there is (slightly larger) event horizon radius for the black hole at its mass plus the probe mass. When the probe reaches the distance (from our point of view) equal to difference betwee...
by Kasuha
Wed Feb 03, 2010 4:11 pm
Forum: Science
Topic: LHC as detector of relict neutrinos?
Replies: 4
Views: 2273

LHC as detector of relict neutrinos?

I was reading an article about neutrinos and their detection recently and when it discussed relict neutrinos and problems with their detection due to their extremely low energy I got an idea if LHC couldn't be used as a kind of such a detector - sure these neutrinos have too small energy to interact...
by Kasuha
Fri Dec 18, 2009 6:27 am
Forum: Quantum Philosophy
Topic: False Vacuum
Replies: 38
Views: 13969

Re: False Vacuum

And exactly this difference is important. Since quantum theory, we know that observation makes a difference to the particles. Hahaha~ The important thing is, in the double slit experiment, if you leave the detector at the slit but cut data wires going out of it and therefore you are technically not...
by Kasuha
Thu Dec 17, 2009 9:46 pm
Forum: Quantum Philosophy
Topic: False Vacuum
Replies: 38
Views: 13969

Re: False Vacuum

Particles in LHC are way less energetic than many other particles in the universe. The only difference is that in LHC scientists are watching the outcome with sophisticated equipment. In space, much higher energy collisions occur only there are no detectors to measure results. If a particle collisio...
by Kasuha
Thu Dec 17, 2009 9:35 am
Forum: Quantum Philosophy
Topic: False Vacuum
Replies: 38
Views: 13969

Re: False Vacuum

The universe has passed several phase changes in the past, that's what we currently call "first few seconds after big bang". Who knows, if another phase change occurs, future intelligences in the new universe may call that one the same way.
by Kasuha
Tue Dec 15, 2009 1:50 pm
Forum: Quantum Philosophy
Topic: I love this video
Replies: 2
Views: 2886

Re: I love this video

Actually there were double slit experiments conducted that successfully watched which slit does the electron/photon go through which still preserved the interference pattern. It all depends on how you watch. See Afshar experiment , for instance. I think the idea that the particle goes all possible w...