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» The Geek Culture Forums   » Techno-Talking   » Science!   » nanotech, astronomy, physics. Where is my answer?

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Author Topic: nanotech, astronomy, physics. Where is my answer?
lira
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Icon 1 posted November 06, 2008 09:08      Profile for lira     Send New Private Message       Edit/Delete Post   Reply With Quote 
Ok this is as of currently a hypothetical situation. We start with a ball of nanites. They are programed to matter in to them selves, and after a point build a ram jet. At that point a portion of the materiel that the ram jet pass' by becomes fuel, and a portion of it becomes more materiel to increase its size, therefore its intake of matter. It would grow exponentially. So small ball in to jet becomes big eaty thing right.


Now the question.
Will it ever be large enough to use solid planets as materiel for the process? And further down the line what keeps this from breaking light speed? and if it is large enough, and fast enough could it move over/around a black hole and cause a disruption in it?
Ok that is a complicated question. post questions reply's or just make fun of it.

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TheMoMan
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Icon 1 posted November 06, 2008 11:56      Profile for TheMoMan         Edit/Delete Post   Reply With Quote 
________________ Sounds like a super Black Hole, Now lets say you are on a planet in a solar system that got just ate by said Black Hole would every thing be torn assunder? Or would the solar system continue to function?

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Benjamin Franklin,

Posts: 5848 | From: Just South of the Huron National Forest, in the water shed of the Rifle River | Registered: Sep 2002  |  IP: Logged
tweety
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Icon 1 posted November 08, 2008 09:41      Profile for tweety   Author's Homepage     Send New Private Message       Edit/Delete Post   Reply With Quote 
MoMan – The solar system would function, but all the bodies making up the solar system would be thrown off their previous orbits. This, of course, would be only true if the black hole had a stronger or weaker gravitational pull than the planetary body it just consumed. But, taking into account that the black hole would have consumed the planet's full mass, then the black hole would have more mass than the planet, and therefore a stronger gravitational pull. So, four things can happen:

1) All the orbiting mass gets thrown out of their current orbits, but everything, including the black hole, eventually settle into a new harmonic state and the black hole slowly dissolves through Hawking radiation and does no more damage;

2) The black hole doesn't settle into a stable orbit and moves toward the solar system's sun(s), consuming all matter it encounters along the way, and eventually the sun(s) whence it reaches the center of the solar system. From there it now has enough mass to pull in the other solar system objects, consuming those;

3) The black hole doesn't settle into a stable orbit, but rather has enough velocity to move outward away from the solar system, consuming any mass objects on its way out;

4) Nothing settles into a stable orbit and everything eventually falls into the black hole.

Anyway you cut it, the solar system would be forever altered.

lira – without fully understanding how the nanites work, it's difficult to say with certainty if it would be able to use solid planets as fuel/new material. Although, assuming that the nanites start out with some sort of mining function, then anything would be game. Now, from my understanding of why it's impossible to reach the speed of light, what would keep this mass from reaching the speed of light is the fact that as it nears c it nears infinite mass and would require nearly infinite fuel to continue accelerating. As the Universe, as we currently understand it, is finite, it might be able to reach 99% c, but only if it consumed the entire universe. Which of course, begs the question, if it has consumed the entire universe, does it have anywhere in which to reach c anyway? Or, now that it is essentially the Universe, does it really matter?

As for the black hole question, from the basis of your hypothesis, I would say that it would eat the black hole as just another source of raw material. Only if it had more mass than the black hole. Less mass, more than likely it would be sucked in and consumed by the black hole. But, if it had small enough mass, like a neutrino, it would pass through, I believe. Not sure if I'm correct on that particular particle, but IIRC there is a subatomic particle that can pass through black holes. Theoretically, of course. [Smile]

Of course, with enough velocity it could possible pass by, but as for what it would do to a black hole would most likely depend on the mass of the black hole, the black hole's velocity, and whether there are other mass objects near by.

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TheMoMan
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Icon 1 posted November 08, 2008 16:03      Profile for TheMoMan         Edit/Delete Post   Reply With Quote 
____________ tweety __ So has it happened and are we in some huge Universe Planetarium, and at some time we may be able to look out the hole.

Or it is going to happen and we just do not see the Black Hole coming?

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Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety.


Benjamin Franklin,

Posts: 5848 | From: Just South of the Huron National Forest, in the water shed of the Rifle River | Registered: Sep 2002  |  IP: Logged
tweety
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Icon 1 posted November 09, 2008 19:43      Profile for tweety   Author's Homepage     Send New Private Message       Edit/Delete Post   Reply With Quote 
MoMan – Either we're in some Universe Planitarium, or our entire Universe is really just nothing more than one atom in some giant's big toe.

I would think we would be able to detect a black hole heading towards Earth. But, I don't think we'd be able to do much about it.

Hmmm … imminent, unavoidable death and destruction on a galactic scale … sounds like lootin' time to me. [devil wand]

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If I were a good man I'd talk to you more often than I do.
American Fairy Tales
IT, A Philosophy

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Metasquares
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Icon 1 posted November 09, 2008 20:21      Profile for Metasquares   Author's Homepage     Send New Private Message       Edit/Delete Post   Reply With Quote 
The amount of energy required to accelerate something of nonzero mass to light speed is infinite.

e = mc^2 / sqrt(1 - v^2/c^2).

As v -> c, v^2 -> c^2, v^2 / c^2 -> 1, sqrt(1 - v^2/c^2) -> 0, and the whole equation -> infinity.

You can get close using huge amounts of energy. But relativity seems to preclude ever hitting light speed, at least by conventional means of travel.

Posts: 664 | From: Morganville, NJ | Registered: Oct 2005  |  IP: Logged


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