Alain wrote:
> I have a BIG problem with Dyson spheres! Inside an hollow sphere, there 
> is NO gravity, if the sphere is built around a star, everything not held 
> in place will fall in the star. If you make it spin, all the air will 
> collect at the equator, untill the sphere collapses unto itself. The 
> equatorial part goes flying away and the poles plunging into the star.

Why is there no gravity?  If you take a sun-sized star and build a 
sphere of Earths around it at 1 AU (dunno where you'd get that many 
Earths), does the now hollow sphere not have gravity on either its 
inside or outside surface?

-- 
Tim Cook
http://home.bellsouth.net/p/PWP-empyrean

-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GFA dpu- s: a?-- C++(++++) U P? L E--- W++(+++)>$
N++ o? K- w(+) O? M-(--) V? PS+(+++) PE(--) Y(--)
PGP-(--) t* 5++>+++++ X+ R* tv+ b++(+++) DI
D++(---) G(++) e*>++ h+ !r--- !y--
------END GEEK CODE BLOCK------

Post a reply to this message