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From: jdnicoll@panix.com (James Nicoll)
Newsgroups: rec.arts.sf.written
Subject: Re: Looking for stories....
Date: Tue, 8 Jul 2025 00:49:55 -0000 (UTC)
Organization: Public Access Networks Corp.
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References: <TcGaQ.51557$TOIb.43827@fx42.iad> <md20hbFmrmjU1@mid.individual.net> <104gjc9$gmu$2@reader1.panix.com> <104hion$3528v$1@dont-email.me>
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In article <104hion$3528v$1@dont-email.me>,
Robert Carnegie  <rja.carnegie@gmail.com> wrote:
>On 07/07/2025 14:51, danny burstein wrote:
>> In <md20hbFmrmjU1@mid.individual.net> ted@loft.tnolan.com (Ted Nolan
><tednolan>) writes:
>> 
>>> In article <booths-20250707135221@ram.dialup.fu-berlin.de>,
>>> Stefan Ram <ram@zedat.fu-berlin.de> wrote:
>>>> Lee Gleason <lee.gleason@comcast.net> wrote or quoted:
>>>>>    That have teleportation across stellar distances, but only to
>>>>> teleportation booths that have been first been transported to their
>>>>> destinations by conventional space travel on ships.
>>>>
>>>>   Transfer booths only working between fixed locations equipped with
>>>>   booths exist in Larry Niven's Ringworld.
>> 
>>> I was thinking about that.  Was there a reason given why they aren't
>>> used off-planet?  Maybe they are SPEOL only?
>> 
>> Also... they had to compensate for the differing potential
>> energies between receiving and transmission sites, as one
>> could be "traveling" (term used a bit loosely) a lot faster
>> and in a different direction, and altitude, etc., than
>> the other.
>> 
>> This would otherwise lead to potentially a hefty chunk of
>> heat being released at the receiving site.
>> 
>> (This was, iirc, a plot device in one of his stories).
>> 
>> It's bad enough when talking about locations on the
>> same planet, but if you're looking at space velocities
>> and energy wells, etc., it's mind boggling...
>
>Unless you're in space to begin with.
>_
>I think Niven's "All the Bridges Rusting" firstly
>shows an interstellar spaceship which can teleport
>itself but it needs a receiver, which is in the
>outer solar system - so, less deep in the Sun's
>gravity well.  I don't reme,ber if that mattered.
>Meanwhile, another spaceship is out there and
>in trouble.
><https://larryniven.net/?q=bibliographic-reference/all-the-bridges-rusting>

There's transfer booths at both ends of the trip, Sol, and Alpha 
Centauri. Open ended in both cases, I think, so something not
at rest with the booths can transfer through without a collision.


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