disctrivia III= lets move it to roundworld!!!

is it the "send hamsters into space by catapult plan"?

no? ok

There are a couple, but are you refereing to Ion drive? which uses charged ions fired out VERY fast from the rear of the craft?

sorry pondr, i was actualy refering to a "craft" of some sort that only goes from earth to space, think really bad music and awful carpet.

space elivator (lift, sorry spelling is crap)

good question book 1 i think

are you going to post the questions or do you want us to?

i'll post the next one but after that the succsesful answerer can write the next Q.

Its going good guys so far

HEX(dusting of the golden suit and big nicrophone)

A grey hole?

Some theories predict that a worm hole will join a black hole and a white hole but i am of the opinion that black holes are just the densest phase of matter in this universe and apart from slowing time down near them so they would make good refrigerators they is nothing that special about them.

As Hexon has said i got the right answer an easy one.

What famous sixty's date was incorrect in the first edition of Science of Discworld I, also give the correct date.

y u gotta kill the buzz miter buzz-kill? BH's are ueber and who knows hey may just be wormholes in waiting...probably know but as all our phys breaks down over the event horizon I like to belive in maybe.

Actually our physics hold inside black holes...That is, quantum mech and/or relativity...Which sort of doesn't matter becuz nothing ever falls into them (in a finite time)...

u sure about that? I htough it all breaks over the event horizon

ok, but even if something could survive it, itll never cross the EH as far as we're concerned. the cool bit is that we can always go there and rescue it, and that itll always be in the nick of time. so, if you ever fall into a black hole, know two things: that if you are still alive you have one heck of a solid body, and that in an infinity of time, nobody cared enough to come and rescue you from a very unpleasant death.

If nothing can pass the event horizon how do Black holes form in the first place and how do they grow? This is one of the reasons i was saying i suspect that black holes are just probably the densest form of matter in our universe. And that the reason that the maths comes up with weird results is that there is a phase change between different forms for instance liquids don't follow the same rules as solids and gases so black hole matter should not be expected to follow the same rules as a everyday solid.

Plasma <> Gas <> Liquid <> Solid <> Neutronium <> Degenerate quarks(I think this is what its called but my memory is not what it once was so open to correction) <> Black Holes

PS To use black hole as a refrigerator you need to put the stuff in orbit which would take a fair amount of energy both to put in and extract but would still not solve the fridge paradox is a empty or full fridge more efficient

Well, I dunno about their forming, but do black holes actually grow? If they do, this might be an explanation:
Matter is sucked to the BH. It never passes the event horison, but if you look at the whole thing from a distance it'll look as if the BH absorbed the matter (it's mass will look as if it grew, because the matter on the edge will cause attraction [gravity] too, so it looks like a part of the BH?). Maybe? I'm not sure about this.
And don't BHs have an infinite density? Cuz their whole mass is concentrated in a geometric point, so no volume...Man I should know these things better

Ah i think i have spotted where you confusion lies the event horizon is only the point where the gravitational pull exceeds the escape velocity of light aka c. So just as the Earth's gravitational pull extends into space without the need for matter on the basis of inverse square laws(That is if you don't subscribe to M.O.N.D. theories of gravity) the gravitational field of black holes extends(the black bit of the field anyway) to the point where the escape velocity drops below c. So it is thought to be possible to cross this point as there is nothing there this being the event horizon(tho only paradoxically on big black holes like the those at the centre of galaxies the tidal forces on ordinary stellar mass black holes would tear anything we could engineer with conventional proton/electron matter apart) tho unless you can work out how to go faster than c you cant come back. What is thought(by some theoreticians but which i suspect just to be a mathematical construct due to a lack of understanding of the phase change from degenerate quarks to black hole matter) to lie in the centre of the black hole is the singularity which you would have trouble catching up to in finite time especially as time would have likely stopped for you as you crossed the event horizon.

Now believe three impossible things before breakfast

And back to the threads original purpose the hint for my question is MC was nearly third