John Cowan wrote:
>Andreas Johansson scripsit:
>
> > I'm not sure of the exact definition of a "ringworld", but assuming that
> > they work on the "ratating wheel" principle, the centrifugal force will
> > mimic gravity very well (if it's reasonably big).
>
>A classic Ringworld is a short cylinder about 300 million kilometers in
>diameter and about 1 million km long, with a G-type star at the center.
That'd mean an area of about 10^15 sqkm for the inside of the Ringworld -
the inhabitants are going to have alot of space. Not to mention the amount
of building material ... at a quick estimate more than the mass of of the
Solar System minus the Sun (assuming a laughable average thickness of 1 km).
Andreas
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