02-28-2006, 02:27 PM | #201 |
Quasi Evil
Join Date: Jan 2003
Location: Maryland, US
Posts: 4,634
|
You mean they dont teach this way of thinking about gravity in schools anymore?
__________________
"People's political beliefs don't stem from the factual information they've acquired. Far more the facts people choose to believe are the product of their political beliefs." "Injustice anywhere is a threat to justice everywhere." |
02-28-2006, 05:47 PM | #202 |
Elf Lord
Join Date: Apr 2002
Location: Darkness
Posts: 1,211
|
I couldn't help noticing that somone was talking about measuring a singularity...
Degenerate matter can be measured... such as neutronium... yes... Assuming you can calculate for the relatavistic changes in the "measuring sticks" you can get a dimension. That's because neutronium or "white dwarfs" are matter. It's degenerate matter but it does have dimension despite the warping of space. It consists of Neutrons packed edge to edge. No empty space, no orbital shells, no protons. Just solid packed Neutrons. A singularity however, has reached a sufficient mass to overcome the last of the strong electromagnetic forces with gravity. The neutrons are no longer packed shoulder to shoulder. They begin to occupy the same "space" and also (according to theory) experience a shift in their energy states. It should be noted however that normally mass doesn't overlap, and the fact that gravity has overpowered the stong electromagnetic forces means basically that matter itself has collapsed. The matter has "ceased to exist" as regards any measurable test in this universe. But the energy from that matter has NOT ceased to exist. It continues to occupy an overlapped state in the "singularity". This is where (supposedly) all the gravity comes from. The mass has been converted to energy, but due to the odd nature of a singularity, space continues to act as if the energy were still a mass exerting a gravity field. If you were somehow able to measure the actual singularity (and It's hard to imagine how this could be accomplished) you would find that it's measurements were infinitesimal. It would be smaller than the smallest sub atomic particles. There is however an event horizon, or probably several event horizons. And the dimensions of these could be measured... The photonic event horizon is just the boundry of the singularities effect on information... it's very difficult to get information when it must travel faster than the speed of light to escape. "Part of Kerr's solution shows that the region bounded by the ring singularity is a region of the most extreme peculiarity. This is a region of negative space-time! While the meaning of this is still being debated, the consensus among many scientists seems to be that this is an area in which gravity is switched into a repulsive, rather than an attractive force. ... Another theory claims that this is a region, within which, objects have a negative radius. Unfortunately, no one can find any physical meaning in such a concept" "One of the most unusual characteristics of a Kerr black hole is the possibility that it could evolve into a naked singularity. Due to the law of conservation of angular momentum, a rotating black hole should rotate ever faster as its radius decreased. Once the object's angular momentum increased beyond it's mass, the event horizon of the hole would be moving in excess of the speed of light. At this point, the event horizon would simply vanish from the universe, exposing the singularity. The absence of the event horizon means that we could travel freely into and out of the singularity. While no one has yet to prove that naked singularities cannot exist, most physicists are strongly inclined to believe that such is the case. Safely within the event horizon, a singularity is effectively shut out of the universe. When it is naked, this region of utter disregard for the known laws of nature is free to interact with the rest of the universe. To illustrate just how disruptive such an object might be, the simple act of going into orbit around a naked singularity would enable one to travel to any point in the past .."
__________________
I have harnessed the shadows that stride from world to world to sow death and madness... Queer haow a cravin' gits a holt on ye -- As ye love the Almighty, young man, don't tell nobody, but I swar ter Gawd thet picter begun ta make me hungry fer victuals I couldn't raise nor buy -- here, set still, what's ailin' ye? ... |
02-28-2006, 05:53 PM | #203 |
Elf Lord
Join Date: Apr 2002
Location: Darkness
Posts: 1,211
|
"Due to the law of conservation of angular momentum, a rotating black hole should rotate ever faster as its radius decreased. Once the object's angular momentum increased beyond it's mass, the event horizon of the hole would be moving in excess of the speed of light. At this point, the event horizon would simply vanish from the universe, exposing the singularity."
Oh yes.. I should have made note that the effects of an occurrence like this would be noticeable all across the universe... The acceleration of that much matter to C++ might be comparable to a "big bang", and could have similar results, not to mention leave similar traces...
__________________
I have harnessed the shadows that stride from world to world to sow death and madness... Queer haow a cravin' gits a holt on ye -- As ye love the Almighty, young man, don't tell nobody, but I swar ter Gawd thet picter begun ta make me hungry fer victuals I couldn't raise nor buy -- here, set still, what's ailin' ye? ... |
02-28-2006, 08:13 PM | #204 | |||
Entmoot Secretary of the Treasury
Join Date: Feb 2003
Location: Campsite-by-Giraffe
Posts: 5,408
|
Quote:
Quote:
Quote:
__________________
KI6PFA Amateur Radio Operator
|
|||
03-01-2006, 03:04 PM | #205 | ||
Elf Lord
Join Date: Apr 2002
Location: Darkness
Posts: 1,211
|
Quote:
Quote:
__________________
I have harnessed the shadows that stride from world to world to sow death and madness... Queer haow a cravin' gits a holt on ye -- As ye love the Almighty, young man, don't tell nobody, but I swar ter Gawd thet picter begun ta make me hungry fer victuals I couldn't raise nor buy -- here, set still, what's ailin' ye? ... |
||
03-02-2006, 12:14 AM | #206 | ||
Entmoot Secretary of the Treasury
Join Date: Feb 2003
Location: Campsite-by-Giraffe
Posts: 5,408
|
Quote:
One thing I have major trouble understanding, is that if the gravity is so high, how does gravity itself escape the event horizon, because gravity can only travel at the speed of light. Trippy. Quote:
Bringing me to infinity (off earlier topic slightly), which, in my opinion, infinity cannot physically exist, because the googolplex is finite yet would still require all the matter in the universe and then some to write down at even font size one, which is less than a millimeter. But delving into infinity is like delving into the concept of nothingness, which I looked up on Wikipedia and it said what Sten Odenwald said with slightly different (but equally amusing!) words.
__________________
KI6PFA Amateur Radio Operator
Last edited by trolls' bane : 03-02-2006 at 12:16 AM. |
||
03-02-2006, 03:35 AM | #207 | |||
Elf Lord
Join Date: Apr 2002
Location: Darkness
Posts: 1,211
|
Quote:
Quote:
Quote:
But then... you might be looking in the wrong direction for infinity. Take an apple.. and slice it in half... Now slice the half in half... when you get to the last atom, start on it. When you get to the last sub atomic particle, start on it. When you get to the last string, quantum packet etc.. start on it. Mathematics physically exist within our universe, otherwise they wouldn't be able to model it very effectivly. Infinity is a mathematical construct, and as such it can be found lurking in the universe... How fine can you slice a nanosecond? Zero is usually considered the opposite of infinity. But it's not. It's just the other side of the coin. It's like a mathmatical singularity... how much is an infinite number of zeros? Zero? If it's zero that means that a potential infinity lurks in every empty spot within the universe... How many infinities can you stack on the head of a pin? Practically, yes, the macro-universe has limits. But scale in the other direction, and you actually begin to rapidly approach infinity.. consider how many quantum virtual particles there are in the universe... I don't think anyone has ever done a calculation on that... That would be .. mind boggling..
__________________
I have harnessed the shadows that stride from world to world to sow death and madness... Queer haow a cravin' gits a holt on ye -- As ye love the Almighty, young man, don't tell nobody, but I swar ter Gawd thet picter begun ta make me hungry fer victuals I couldn't raise nor buy -- here, set still, what's ailin' ye? ... |
|||
03-02-2006, 08:16 PM | #208 | |
Entmoot Secretary of the Treasury
Join Date: Feb 2003
Location: Campsite-by-Giraffe
Posts: 5,408
|
Quote:
I'm probably wrong, or at least diving too deep into pseudo-science, and equations that balance out and yet unbalance at the same time. I'm curious what you think of as infinity? Anyone, for that matter?
__________________
KI6PFA Amateur Radio Operator
|
|
03-03-2006, 04:47 AM | #209 |
Elf Lord
Join Date: Apr 2002
Location: Darkness
Posts: 1,211
|
The only necessary prerequisite for infinity is room to add just a little bit more.
Jello is infinite.. there's always room for jello. Since the universe is expanding, it is quite likely that it is getting bigger... Is there something outside for it to expand within? That would mean that there is the possibility of an infinite realm just the other side of timespace. If it's expanding.. and there's NOTHING on the outside... then what's to stop it from expanding ad infinitum? Collapse has been, for the moment, ruled out, and it's the best guess the universe will just expand forever. BTW forever is also another form of infinity...
__________________
I have harnessed the shadows that stride from world to world to sow death and madness... Queer haow a cravin' gits a holt on ye -- As ye love the Almighty, young man, don't tell nobody, but I swar ter Gawd thet picter begun ta make me hungry fer victuals I couldn't raise nor buy -- here, set still, what's ailin' ye? ... |
03-03-2006, 08:20 PM | #210 | |
Entmoot Secretary of the Treasury
Join Date: Feb 2003
Location: Campsite-by-Giraffe
Posts: 5,408
|
Quote:
We have two opposing opinions. I kninda hope I'm wrong, if I were to accidentally live long enough to see these things! *shudder*
__________________
KI6PFA Amateur Radio Operator
|
|
03-04-2006, 06:19 AM | #211 |
Elf Lord
Join Date: Apr 2002
Location: Darkness
Posts: 1,211
|
At the current rate of inflation, the universe will likely never see a big crunch, unless something extremely drastic changes in the fundamental constants.
Also big bang theory is on the wane... the new favorite is "brane collisions"... A 5th dimensional entity intruding into a 4th dimensional space, the most likely source would be another time-space realm drawing into congruence and "squishing" the "void" into BOTH universes, causing a massive release of energy and matter. If it's true.. it means that somewhere out there, our universe has a fraternal twin. But just because this 4th dimensional space is a "closed" space, doesn't mean that it actually IS the universe. The universe would include multiple 4d realms, possibly an infinite number of them. An infinity of infinities...
__________________
I have harnessed the shadows that stride from world to world to sow death and madness... Queer haow a cravin' gits a holt on ye -- As ye love the Almighty, young man, don't tell nobody, but I swar ter Gawd thet picter begun ta make me hungry fer victuals I couldn't raise nor buy -- here, set still, what's ailin' ye? ... |
03-04-2006, 12:11 PM | #212 | |
Entmoot Secretary of the Treasury
Join Date: Feb 2003
Location: Campsite-by-Giraffe
Posts: 5,408
|
Quote:
__________________
KI6PFA Amateur Radio Operator
|
|
03-22-2006, 05:50 PM | #213 |
Elf Lord
Join Date: Apr 2002
Location: Darkness
Posts: 1,211
|
Hrmm.. I need to resubscribe.. I cleaned out my folders..
__________________
I have harnessed the shadows that stride from world to world to sow death and madness... Queer haow a cravin' gits a holt on ye -- As ye love the Almighty, young man, don't tell nobody, but I swar ter Gawd thet picter begun ta make me hungry fer victuals I couldn't raise nor buy -- here, set still, what's ailin' ye? ... |
03-23-2006, 11:15 PM | #214 |
Entmoot Secretary of the Treasury
Join Date: Feb 2003
Location: Campsite-by-Giraffe
Posts: 5,408
|
Okay, there are definitely posts missing. What happened here?
__________________
KI6PFA Amateur Radio Operator
|
03-24-2006, 01:00 AM | #215 |
Hobbit
Join Date: Nov 2005
Location: new jersey
Posts: 45
|
Hello all. Well in college i majored in chemistry and physics and i minored in mineralogy and geology. I work as a scientific researcher for the government.
|
03-24-2006, 01:06 AM | #216 | |
Entmoot Secretary of the Treasury
Join Date: Feb 2003
Location: Campsite-by-Giraffe
Posts: 5,408
|
Quote:
__________________
KI6PFA Amateur Radio Operator
|
|
03-28-2006, 01:02 AM | #217 |
Entmoot Secretary of the Treasury
Join Date: Feb 2003
Location: Campsite-by-Giraffe
Posts: 5,408
|
Stardust
Help us search for star dust! Take an online course, and then search for the dust!
http://stardustathome.ssl.berkeley.edu/
__________________
KI6PFA Amateur Radio Operator
|
03-28-2006, 03:58 PM | #218 |
Elf Lord
Join Date: Apr 2002
Location: Darkness
Posts: 1,211
|
Isn't it more like interstellar dust?
One would assume that samples that far away from a star would have been affected by the environment at least to some degree....
__________________
I have harnessed the shadows that stride from world to world to sow death and madness... Queer haow a cravin' gits a holt on ye -- As ye love the Almighty, young man, don't tell nobody, but I swar ter Gawd thet picter begun ta make me hungry fer victuals I couldn't raise nor buy -- here, set still, what's ailin' ye? ... |
03-28-2006, 04:30 PM | #219 | ||
Co-President of Entmoot
Super Moderator Join Date: Aug 2002
Location: Canada
Posts: 8,397
|
*hijacks thread*
I just learned something cool about colour. When you look at traditional art like a painting, you are looking at reflected light. The primary colours are red, blue, and yellow. When you look at a computer screen, the colours you see are projected light. All colours are made up of red, blue, and green. Pretty rad huh? That's why when you scan a colour image, the colours are slightly different. And yet, when you have your digital photos printed, they look the same. The photo lab must have some genius software. *hands thread back*
__________________
"I can add some more, if you'd like it. Calling your Chief Names, Wishing to Punch his Pimply Face, and Thinking you Shirriffs look a lot of Tom-fools." - Sam Gamgee, p. 340, Return of the King Quote:
Quote:
|
||
03-28-2006, 04:48 PM | #220 |
the Shrike
Join Date: Mar 2002
Location: San Francisco, CA <3
Posts: 10,647
|
*smiles and nods
Yep, I learned all sorts of cool shite like that when I did my remote sensing class... what's not to like? Radar, satellites, aerial photography.
__________________
"Binary solo! 0000001! 00000011! 0000001! 00000011!" ~ The Humans are Dead, Flight of the Conchords |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Paradise Lost | Brill | General Literature | 106 | 01-10-2014 08:13 PM |
GOOD new/recent Science Fiction/Fantasy? | bropous | Fantasy and Sci-Fi Novels | 4 | 03-12-2007 01:36 PM |
Why you believe what you believe I | Rían | General Messages | 1173 | 02-01-2005 03:56 PM |
Science Museum. | Arian | General Messages | 13 | 03-01-2002 11:13 PM |
Science Fiction Books Worth Reading | Quazar | Fantasy and Sci-Fi Novels | 2 | 12-18-2001 11:42 AM |