Michael Adams wrote:
Hum, so a sphere would not show up in normal light freqs but would show up
in several others..
It would be black as a hole, but black body radiation, what is that?
Haven't got a clue about that, speak to a physicist :D
Why infared, since it if you find a way to convert heat to power, then you
would not have to vent it off, but yes it would be a massive heat source but
no visible light if you could not find a way to use the heat for power..
If your civilization can convert heat to power such that the heat is
GONE, rather than just moved around... they've mastered magic. Even if
you use the heat with some kind of supertechnology, whatever use you put
it to will generate heat, and then you're back in the same place again,
with your sphere residents being slowly cooked. You want to radiate it.
But how massive is a sphere, how much gravity would it exert? Would it not
suck in some cause of the spheres mass or its not that much, I am trying to
figure out how to do a sphere that is big enough, so that dwarf like
creatures can do mining. Need to be deep enough so that normal mining does
not expose the spheres inner surface?
If your sphere is massive enough that it's sucking light/heat back into
it, that's black-hole levels of density. Considering that the hole isn't
technically part of this universe, I don't think you can hollow it out
and make a dyson sphere out of it... it doesn't really have volume in a
normal sense any more, I think.
Dwarfs in a fantasy world, normally only go down how far? Earth quakes have
to be artificial or what? Outer surface being hit, or shifting?
How deep your dwarves are digging depends on your dwarves, really. I'd
say though worst case they're not likely to go more than a few miles
under the surface. Make the "mineable" layer about three miles thick,
and then put your unobtanium on the outside to whatever depth necessary
to support the structure. If your sphere gets hit by a comet or
something, I'm not sure if it'll shake much. It's going to be REALLY
MASSIVE, so it'd take one heck of an impact to make it shake.
What arthors would have written about the use of a Dyson Sphere? Niven,
would he have written one, or what? Piper?
I don't think Niven ever wrote a short story or anything on the subject.
He wrote an article on the various "Really big habitat" ideas, but he
didn't really like playing with Dyson Spheres. He messed about with
Ringworlds, of course, and left it at that. Although he does come up
with a neat idea of putting a galaxy inside a REALLY BIG sphere, and
putting the atmosphere on the *outside*. You live in microgravity, in a
world with no day, endless land, where you can harness swans to a
chariot and fly to the moon... Your atmosphere will escape slowly, but
you can manufacture more with all the energy from the galaxy that you've
captured.
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