Re: [TML] Where the UPP fails me... shadow@xxxxxx (01 May 2020 01:06 UTC)
Re: [TML] Where the UPP fails me... Cian Witherspoon (01 May 2020 01:48 UTC)
Alderson Discs (was: Where the UPP fails me...) shadow@xxxxxx (02 May 2020 10:04 UTC)
Re: [TML] Alderson Discs (was: Where the UPP fails me...) Timothy Collinson (02 May 2020 10:36 UTC)
Re: [TML] Alderson Discs (was: Where the UPP fails me...) shadow@xxxxxx (05 May 2020 03:06 UTC)
Re: [TML] Alderson Discs Rupert Boleyn (05 May 2020 03:25 UTC)
Re: [TML] Alderson Discs (was: Where the UPP fails me...) Phil Pugliese (05 May 2020 22:25 UTC)
Re: [TML] Alderson Discs (was: Where the UPP fails me...) kaladorn@xxxxxx (05 May 2020 22:58 UTC)
Re: [TML] Alderson Discs (was: Where the UPP fails me...) kaladorn@xxxxxx (05 May 2020 16:01 UTC)
Re: [TML] Alderson Discs (was: Where the UPP fails me...) Jeff Zeitlin (05 May 2020 19:01 UTC)
Re: [TML] Alderson Discs (was: Where the UPP fails me...) kaladorn@xxxxxx (05 May 2020 20:03 UTC)
Re: [TML] Alderson Discs Kelly St. Clair (06 May 2020 01:28 UTC)
Re: [TML] Alderson Discs (was: Where the UPP fails me...) Phil Pugliese (06 May 2020 02:21 UTC)
Re: [TML] Alderson Discs (was: Where the UPP fails me...) shadow@xxxxxx (06 May 2020 18:36 UTC)
Re: [TML] Alderson Discs (was: Where the UPP fails me...) kaladorn@xxxxxx (06 May 2020 19:10 UTC)
Re: [TML] Alderson Discs (was: Where the UPP fails me...) Richard Aiken (10 May 2020 00:38 UTC)
Re: [TML] Alderson Discs (was: Where the UPP fails me...) shadow@xxxxxx (10 May 2020 23:44 UTC)
Re: [TML] Where the UPP fails me... kaladorn@xxxxxx (01 May 2020 17:53 UTC)
Re: [TML] Where the UPP fails me... Phil Pugliese (01 May 2020 20:12 UTC)
Re: [TML] Where the UPP fails me... shadow@xxxxxx (02 May 2020 10:04 UTC)
Re: [TML] Where the UPP fails me... kaladorn@xxxxxx (02 May 2020 16:16 UTC)

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