Okay, it's time to give you an introduction to bbcode. This is how a quote begins:
quote="Charlie"
And this is how one ends:
/quote
Add them together, with both inside of their own set of square-brackets, and you get this:
Charlie wrote:
Within certain limits (which vary between different message boards), you can embed quotes within each other:
Charlie wrote:Absalom wrote:
On the outsider boards, you can only have them three deep, so this is the limit:
Charlie wrote:Absalom wrote:Charlie wrote:
Whenever you're trying to reply to part of a message instead of the entire message, you can "cut" it into pieces by inserting a:
/quote
followed by a:
quote=""
where the username of the person that you're responding to is inside of the quotation marks.
Charlie wrote:Absalom wrote:You're thinking of mass manipulation, not gravity manipulation. Gravity manipulation is hopefully accessible via mass manipulation technology, but it isn't the same thing. In the real world we're basically certain that we've found mass's force carrier particle, but we aren't actually certain that gravity should have one.
My apologies, I was told in school that anything with a measurable mass has it`s own gravity well. This is where my confusion comes from. My reasoning was that we make an object heavier and create an extended artificial gravity well.
I assume that doing that would work (I don't know, but I assume: just as I assume that gravitons, possibly in multiple varieties, exist), but if you can generate an actual gravitational force instead of having to stop with artificial mass, then you might be able to achieve your goals more efficiently (consider: your method could, for example, require duplicating the mass of an entire planet to generate standard-Earth gravity: without a more efficient method, Humanity couldn't have artificial gravity with any reasonable size of fusion reactor, which would be a deal-breaker for at least Outsider).
Charlie wrote:Absalom wrote:As for tractor beam/field effects, if you can bend or reflect a field (as you can with photons), then you can manipulate a field into the form of a beam. If you can form a beam with a single-source emitter then you don't need fast switching, if you can't then there's a very real possibility that you'll need fast switching to create a mass driver with gravity technology.
Is this an idea for a gravity powered Coil Gun?
I assume that it wouldn't be designed as a coil system, but yes, this is an idea for a Mass Driver (which is a generic category which includes both Coil Guns and Rail Guns). It could also be used for e.g. elevators.
Charlie wrote:Absalom wrote:Charlie wrote:Would not having massive gravity in a certain area bend the beam towards the ship? Maybe if we could project the field we could create ultra dense fields of local gravity, miniature black holes to hide behind at a safe distance.
Unless any theoretical gravitons could move faster than light (or, alternatively, were somehow immune to the acceleration applied by moving space-time), I don't think we'd
quite be able to produce a black-hole level effect. Though maybe I'm wrong.
To be honest I have no idea about the real sciences involved, I was educated on an outdated high school physical sciences level, most of what I know comes from reading articles that pique my interest online. You can be sure however I will read up on this as much as I can until my knowledge base is sufficient to renew this conversation, as at the moment it is fairly one sided as you posses more knowledge on the subject.
My knowledge of the science involved is limited as well, I just know that some things can be extrapolated by logic alone (other things, of course, require math in order to verify, or even predict). For example, I can know that using just artificial gravity to produce an artificial black hole seems dubious (after all, if the gravitons affect themselves, shouldn't you wind up with insufficient graviton-density at your event horizon?), but without actually doing math (which in this circumstance I don't know how to do), I can't know whether this holds up under theory or not (addendum: I think artificial black holes would be one of those areas where you'd need to go with artificial mass, in the hopes that you could get it to "bind" to the event horizon, thereby perpetuating the effect).
icekatze wrote:In the Star Trek universe, they used mass manipulation for a lot of things. Their incredible delta V budget in sub-light speed was due to reducing the mass of the ship while in motion.
I'm honestly dubious about the wisdom of actually doing that with anything that you don't consider disposable. I'm not so certain that many things would react well to having their mass reduced.
icekatze wrote:Although I think using gravity to stop projectiles would probably run into the problem that a powerful enough gravity field would tear the ship apart at the same time.
If you can go with the Newtonian laws for the actual deflections, then I think the main restriction would be the volume of your projector device that actually emitted the counter-gravitons. If the volume was too small for the force exerted then it could be thrown through your ship like a projectile. After that, it all revolves around whether you've got your emitter power levels set correctly for what your ship can handle.
Of course, whether you can produce enough deflection at the emitter power that your ship can deal with is itself yet another question, but one that varies greatly on the basis of your individual situation.
icekatze wrote:(I think the current theory is that gravity propagates at the speed of light. Now I'm not 100% on this, but I seem to recall that it might have had something to do with frame dragging effects.)
I figure that's probably the speed restriction as well, which leads me down the road of "but does gravity work on it's postulated force carrier?", the answer to which might produce problems for artificial black holes produced via gravity control alone (I think that the result would be rather like your average star: light takes a very long time to escape, but eventually it
does, and not through the Hawking effect). In a situation of gravitons + lightspeed-limits on gravitons + mutually-deflecting gravitons, I'm pretty certain that the very existence of the artificial black hole would require it to not have a genuine event-horizon, ergo, not an actual black hole. And if the actual emitter(s) had to be inside, then it would be REALLY easy to destroy: just shoot lasers at it.