Re: GNU

From	"Carlos E.R." <robin_listas@es.invalid>
Newsgroups	comp.os.linux.misc, alt.usage.english
Subject	Re: GNU
Date	2026-03-21 20:38 +0100
Message-ID	<gm839mx25s.ln2@Telcontar.valinor> (permalink)
References	(23 earlier) <10p901u$1vi0v$16@dont-email.me> <10pa3ad$2ea0n$1@dont-email.me> <u2tirkdf5go1jonupadpdoje5jj22rvit8@4ax.com> <d6uo8mxm8o.ln2@Telcontar.valinor> <1rs9q42.1kx6c2g1st83xnN%nospam@de-ster.demon.nl>

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On 2026-03-20 12:39, J. J. Lodder wrote:
> Carlos E.R. <robin_listas@es.invalid> wrote:
> 
>> On 2026-03-17 16:43, Rich Ulrich wrote:
>>> On Tue, 17 Mar 2026 10:21:47 +1100, Peter Moylan <peter@pmoylan.org>
>>> wrote:
>>
>>
>>
>>>> This sounds like a north/south navigation problem, but it's also an
>>>> east/west problem. Sailing across the Indian Ocean, you need to know
>>>> when to expect to see land. If you don't see it, you've either misjudged
>>>> your longitude or you're wandering into the Roaring Forties.
>>>
>>> The check on north-south, by the sun, is only at noon each day, yes?
>>
>> You might use another time, but you have to know exactly how much off-noon.
> 
> For which you would need a previous fix,
> and a knowledge of how you have moved in the meantime.
> 
>> In one Jules Verne novel, they measure the height of the sun at another
>> time, because it was cloudy, but they took two measures at both sides of
>> the noon, in order to estimate the height of the sun at the exact noon.
> 
> Verne's expositions on science must sometimes be taken
> with more than one grain of salt,
> 
> Jan
> (but don't have this one)
> 
> 

Verne was not a scientist, but he asked others. He wrote a lot about 
calculating the position. Probably he could not do the calculation 
himself, but he was familiar with the general procedures.

-- 
Cheers, Carlos.
ES🇪🇸, EU🇪🇺;

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Re: GNU Peter Moylan <peter@pmoylan.org> - 2026-03-17 10:21 +1100
  Re: GNU Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-17 00:55 +0000
  Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-17 02:53 +0100
  Re: GNU The Natural Philosopher <tnp@invalid.invalid> - 2026-03-17 09:10 +0000
  Re: GNU Rich Ulrich <rich.ulrich@comcast.net> - 2026-03-17 11:43 -0400
    Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-17 22:37 +0100
      Re: GNU Rich Ulrich <rich.ulrich@comcast.net> - 2026-03-17 18:43 -0400
        Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-18 03:15 +0100
      Re: GNU Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-03-18 02:19 +0000
        Re: GNU snipeco.2@gmail.com (Sn!pe) - 2026-03-18 02:29 +0000
          Re: GNU Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2026-03-17 20:17 -0700
            Re: GNU The Natural Philosopher <tnp@invalid.invalid> - 2026-03-18 09:31 +0000
              Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-18 11:41 +0100
              Re: GNU rbowman <bowman@montana.com> - 2026-03-18 18:28 +0000
                Re: GNU The Natural Philosopher <tnp@invalid.invalid> - 2026-03-18 18:31 +0000
                Re: GNU rbowman <bowman@montana.com> - 2026-03-18 23:26 +0000
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-19 11:48 +0100
                Re: GNU The Natural Philosopher <tnp@invalid.invalid> - 2026-03-19 12:17 +0000
                Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-19 13:31 +0100
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-19 14:24 +0100
          Re: GNU Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-03-18 06:15 +0000
            Re: GNU lar3ryca <larry@invalid.ca> - 2026-03-18 10:16 -0600
              Re: GNU Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2026-03-18 09:40 -0700
                Re: GNU The Natural Philosopher <tnp@invalid.invalid> - 2026-03-18 16:56 +0000
                Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-18 20:00 +0100
                Re: GNU rbowman <bowman@montana.com> - 2026-03-18 23:49 +0000
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-19 11:48 +0100
                Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-19 13:34 +0100
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-19 14:24 +0100
                Re: GNU The Natural Philosopher <tnp@invalid.invalid> - 2026-03-19 14:06 +0000
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-19 22:32 +0100
                Re: GNU The Natural Philosopher <tnp@invalid.invalid> - 2026-03-20 07:38 +0000
                Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-20 11:07 +0100
                Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-19 22:22 +0100
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-20 11:32 +0100
                Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-21 20:34 +0100
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-21 22:32 +0100
                Re: GNU snipeco.2@gmail.com (Sn!pe) - 2026-03-19 15:24 +0000
                Re: GNU The Natural Philosopher <tnp@invalid.invalid> - 2026-03-19 17:50 +0000
                Re: GNU rbowman <bowman@montana.com> - 2026-03-19 19:58 +0000
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-20 11:32 +0100
                Re: GNU The Natural Philosopher <tnp@invalid.invalid> - 2026-03-19 12:19 +0000
                Re: GNU Snidely <snidely.too@gmail.com> - 2026-03-18 17:36 -0700
                Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-19 03:01 +0100
                Re: GNU Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2026-03-18 19:16 -0700
                Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-19 13:36 +0100
              Re: GNU Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-03-18 18:02 +0000
                Re: GNU Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-19 00:24 +0000
                Re: GNU lar3ryca <larry@invalid.ca> - 2026-03-18 22:48 -0600
            Re: GNU Andreas Eder <a_eder_muc@web.de> - 2026-03-18 22:45 +0100
              Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-19 10:01 +0100
        Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-18 11:42 +0100
      Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-20 12:39 +0100
        Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-21 20:38 +0100
          Re: GNU Nuno Silva <nunojsilva@invalid.invalid> - 2026-03-21 20:22 +0000
          Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-21 22:32 +0100
            Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-22 03:19 +0100
              Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-22 10:52 +0100
                Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-22 15:12 +0100
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-22 18:37 +0100
                Re: GNU Tony Cooper <tonycooper214@gmail.com> - 2026-03-22 16:31 -0400
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-22 23:31 +0100
                Re: GNU Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-22 23:18 +0000
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-23 11:57 +0100
                Re: GNU Peter Moylan <peter@pmoylan.org> - 2026-03-23 22:15 +1100
                Re: GNU The Natural Philosopher <tnp@invalid.invalid> - 2026-03-23 11:30 +0000
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-23 13:55 +0100
                Re: GNU Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-24 09:15 +0000
                Re: GNU Pancho <Pancho.Jones@protonmail.com> - 2026-03-24 10:17 +0000
                Re: GNU Peter Moylan <peter@pmoylan.org> - 2026-03-24 22:01 +1100
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-24 12:31 +0100
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-24 11:49 +0100
                Re: GNU Peter Moylan <peter@pmoylan.org> - 2026-03-24 21:57 +1100
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-24 12:41 +0100
                Re: GNU Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-24 22:17 +0000
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-25 12:45 +0100
                Re: GNU Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-24 09:14 +0000
                Re: GNU Pancho <Pancho.Jones@protonmail.com> - 2026-03-24 10:27 +0000
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-24 11:49 +0100
                Re: GNU Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-24 22:20 +0000
                Re: GNU Snidely <snidely.too@gmail.com> - 2026-03-24 16:19 -0700
                Re: GNU Snidely <snidely.too@gmail.com> - 2026-03-24 16:51 -0700
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-25 12:45 +0100
                Re: GNU nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-25 12:45 +0100
                Re: GNU Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-27 01:40 +0000
                Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-23 11:34 +0100
              Re: GNU Nuno Silva <nunojsilva@invalid.invalid> - 2026-03-22 10:01 +0000
          Re: GNU Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-21 21:33 +0000
            Re: GNU "Carlos E.R." <robin_listas@es.invalid> - 2026-03-22 03:18 +0100
    Re: GNU Peter Moylan <peter@pmoylan.org> - 2026-03-18 11:35 +1100
    Re: GNU Peter Moylan <peter@pmoylan.org> - 2026-03-18 11:55 +1100

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