🚀 go-pugleaf

In article <CMM.0.90.2.713030681.alsberg@delphi.uio.no> Bj|rn Alsberg writes:
> [ presumably in a list of "interesting problems" ]
> - Simulations of the gravitational field of an Earth sized torus. 
> What are the effects on the atmosphere and the sea level at different 
> locations at the surface.

In article <1992Aug7.071512.1046@nntp.hut.fi> jtyrkko@vipunen.hut.fi
(Juha-Petri Tyrkk|) writes:
>  Has anybody calculated this or does anybody have a ready-made
>answer? My intuitive guess would be that inside the hole of the torus
>the gravity would be so weak that any gaseous atmosphere would escape
>into space. On a planet much greater than Earth things might differ.

In article <1992Aug9.045118.26950@chpc.utexas.edu>
jonathan@chpc.utexas.edu (Jonathan Thornburg) [I] writes [responded]:
>Here are references to several science fiction novels treating this
>and other "wierd gravity planet" scenarios:
>
> [ ... ]

Although the "wierd gravity" isn't really gravity, just intertia in
a non-inertial reference frame, the following trilogy is also of note:

	Arthur C. Clarke
	"Rendezvous With Rama"
	Ballentine, New York, 1973
	??? ISBN 0-24175-4-175 ???
		[excellent, I think]

	Arthur C. Clarke and Gentry Lee
	"Rama II"
	Bantam, 1989
	ISBN 0-553-28658-7
		[mediocre, rather a pot-boiler, I think]

	Arthur C. Clarke and Gentry Lee
	"Garden of Rama"
	forthcoming

- Jonathan Thornburg
  <jonathan@einstein.ph.utexas.edu> or <jonathan@hermes.chpc.utexas.edu>
  University of Texas at Austin / Physics Dept / Center for Relativity
  and (for a few more months) U of British Columbia / {Astronomy,Physics}