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- Newsgroups: sci.space
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!torn!utzoo!henry
- From: henry@zoo.toronto.edu (Henry Spencer)
- Subject: Re: Dyson Spheres, again
- Message-ID: <By6sn5.Ay0@zoo.toronto.edu>
- Date: Mon, 23 Nov 1992 20:52:14 GMT
- References: <wf2gt=G00VoyMYglpu@andrew.cmu.edu> <ewright.722280175@convex.convex.com> <1992Nov23.020045.15067@dartvax.dartmouth.edu>
- Organization: U of Toronto Zoology
- Lines: 26
-
- In article <1992Nov23.020045.15067@dartvax.dartmouth.edu> Frederick.A.Ringwald@dartmouth.edu (Frederick A. Ringwald) writes:
- >> Well, Dyson himself did not actually propose a solid sphere...
- >> What he invisioned was a large number
- >> of habitats in orbit about a star which, together, would completely
- >> encircle the star in a ball-of-twine formation...
- >
- >Have you read Dyson's original article? I have it here in front of me...
- >This sounds like a solid sphere to me...
- >...the idea of a swarm of independent space habitats wasn't
- >Freeman Dyson's, it was Gerard O'Neil's, circa the late '60s...
-
- Sorry, not so. Dyson's *original* paper demonstrated the adequacy of the
- supply of materials by postulating a solid sphere, but he followed up on
- that with more detailed discussions which specified a swarm of smaller
- bodies. See his paper "The Search for Extraterrestrial Technology" in
- Perspectives in Modern Physics (R.E. Marshak, ed.), published in 1966.
- (I've seen references to the same material appearing in a talk given
- by Dyson somewhat earlier.)
-
- O'Neill's key contribution was not so much the idea of space colonies, but
- the observation that space is a *better* place to live than the surface of
- a planet -- that an industrial civilization would *prefer* operating in
- open space even if planets were available.
- --
- MS-DOS is the OS/360 of the 1980s. | Henry Spencer @ U of Toronto Zoology
- -Hal W. Hardenbergh (1985)| henry@zoo.toronto.edu utzoo!henry
-