h a l f b a k e r yYou gonna finish that?
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If you are expecting a mass to Naturally collapse
into a black hole, then you need that total mass to
be between 2 and 3 times the mass of Earth's Sun.
This is also far too big to "immediately
decompose". |
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The magnitude of mass can be reduced if two
masses collide at high speed, and reduced even
more if a bunch of masses collide at high speed, all
at the same moment. A small-enough total mass
can indeed "immediately decompose", explosively. |
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In between the small-enough size and the too-
massive size, for a black hole, is a whole range of
possible sizes. Some of them will explode in
minutes, some in hours, some in days ... So, pick
one that has an appropriate short lifespan.... |
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A black hole can be given an electric charge --just
let it swallow a bunch of electrons. Black holes are
often spinning; a spinning black hole that
possesses an electric charge will also possess a
magnetic field. |
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You can now consider building an appropriately
strong and powerful coil gun to accelerate your
charged black hole toward a target. If you have
timed it right, the hole will explode about the
time it reaches the target.... |
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The third Newton's law is against you. As [bigsleep] said |
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I admit I hadn't looked into details of how massive a
black hole might need to be, to survive travelling the
distance between gun and target, before exploding.
According to the linked article, We might need the
black hole to be about 10E15 grams (a thousand
million metric tons), rather a lot --but also lots less
mass than, say, a planet like Uranus. A battle-moon
like the Death Star ought to be able to shoot such
"rounds" just fine. |
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Decomposing black holes explode? |
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Actually, that's now back in the pot for debate. |
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Previously, we were pretty sure that virtual
particles - (which occur from nothing in pairs,
anywhere, anytime, as particle/antiparticle, and
promptly re-annihilate each other and vanish back
into nothingness) - would have a peculiar effect in
the vicinity of a black hole's "event horizon": if
the pair appeared such that one particle fell
inside the horizon and the other outside, it would
be as though the black hole had emitted a
particle. (This effect was called "Hawking
radiation".) The more sharply curved the event
horizon, the more often this would happen -
turning into an asymptotic runaway as the black
hole's mass approached zero. |
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Hawking's recent postulate that black holes don't
have event horizons calls into question pretty
much everything about said radiation. |
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Of course! The Death Star! |
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I'm still looking for evidence of anything resembling a conventional, or even unconventional, explosion. |
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// postulate that black holes don't have event
horizons// Say wha? How can a black hole not have
an event horizon? |
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//How can a black hole not have an event
horizon?// Well, sir, I don't know, but I'm not
going to tell you. |
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You know how authors tend to get involved in a
really good series, and then kick the bucket? (Yep,
I'm looking at you, Anne McCaffrey, Isaac Asimov,
Robert Jordan... or your headstones, anyway) I
fear your countryman might just get it figured
out, and then leave us. Or maybe just die of
frustration trying to communicate it to us; I'm
sure I would in his situation. |
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// Say wha? How can a black hole not have an event horizon?// |
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Apparently they now have a 'firewall' instead. (link) |
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Whether they have a gift-shop in the middle wasn't stated. |
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Vernon, black holes are often spinning? |
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What does that mean? That a black hole can sometimes spin and then stop spinning only to resume it some time later? |
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Or do some black holes spin while others do not? |
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I think all black holes must have some spin due to the method by which they are formed. |
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Or rather, the event horizon (or whatever is around the black hole, by whatever name) contains spinning material. |
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Because time and space, and therefor movement en direction are wholly different inside a black hole, to say a black hole is spinning is a meaningless frase. |
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Also I understand Voice wants to propose a gun that is feasable to halfbakery standards but this should really be a gun that shoots a black hole at something. And it should have a clip with multiple rounds and it should have rapid fire capabilities. |
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Semi automatic black hole shooter, yeah. |
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[zeno] EXISTING black holes spin because they
originated from stars that spin (angular momentum
is Conserved!). Artificially manufactured black
holes could in theory exist with no spin. If we
cannot make them spin, AS we make them, then
we would EITHER (1) have to use electrostatics to
accelerate a black hole, because a non-spinning
charged hole won't have a magnetic field that can
be gripped by a coil gun, OR (2) have to find a
source of "magnetic monopoles" such that we
could feed one type of them into a hole, and then
accelerate it with a coil gun. |
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We can generate much more powerful magnetic
forces than we can generate electrostatic forces,
so we ARE facing an Important Problem here. |
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[zeno], you don't want to go there. Can you imagine clearing a jam from a semi-automatic black hole weapon? |
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" First, evacuate the area..." |
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