Re: [TML] Alderson Discs (was: Where the UPP fails me...) shadow@xxxxxx 10 May 2020 23:44 UTC
On 9 May 2020 at 20:38, Richard Aiken wrote: > > On Sat, May 2, 2020 at 6:05 AM shadow at shadowgard.com (via tml list) > <xxxxxx@simplelists.com> wrote: > Any holes from one side to the other are gonna be fun too. The > gravity in them will probably drop linearly from 1 g at either end > to zero g in the middle. > > I would think that instead of getting zero at the middle, you'd get a > region of the hole wall that had at least one gravity, probably more. > After all, you've got the mass of the rest of the disk pulling > *sideways* on you all the way down. Unlike in the case of a globe, > this pull would progressively get stronger than the downward pull, > as you went deeper. You might even be able to build a (mostly) > counterweight-powered elevator/railroad between "Centerville" and the > surface of each side. Those sideways forces have to be neutralized somehow or the disc collapses into a sphere and then becomes a *large* black hole. Also, you've got *millions* of miles of rock on all sides of the hole. They'd mostly neutralize each other. Of course "mostly" isn't a lot of help with masses that large. But again *something* has to neutralize them fr the disc to exist. -- Leonard Erickson (aka shadow) shadow at shadowgard dot com