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Groups > alt.folklore.computers > #154918

Re: History--did relay logic (e.g. crossbar switch) need air conditioning?

From Morten Reistad <first@last.name.invalid>
Newsgroups alt.folklore.computers
Subject Re: History--did relay logic (e.g. crossbar switch) need air conditioning?
Date 2015-12-09 21:33 +0100
Organization Me, Myself and I
Message-ID <9qfmjc-32e.ln1@sambook.reistad.name> (permalink)
References <101d5060-a05b-4d3d-8e35-1d2a1b148aa6@googlegroups.com> <20151209172034.456598fd195c4487b08828d0@eircom.net> <ec17d5ce-7925-42d2-a3ba-90cf96a395f4@googlegroups.com> <n49sv70b1s@news3.newsguy.com>

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In article <n49sv70b1s@news3.newsguy.com>,
Charlie Gibbs  <cgibbs@kltpzyxm.invalid> wrote:
>On 2015-12-09, hancock4@bbs.cpcn.com <hancock4@bbs.cpcn.com> wrote:
>
>> On Wednesday, December 9, 2015 at 12:30:02 PM UTC-5,
>> Ahem A Rivet's Shot wrote:
>>
>>> 	Oxygen, it's dangerous stuff, just think of all the fires that
>>> would be prevented if it were cleaned from the atmosphere.
>>
>> Back in science class, they made oxygen and hydrogen by passing
>> electricity through water.   The teacher then took a smoldering
>> (no flame, just smoke) stick to both of them.  BOOM!
>
>Yes, I blew up some apparatus in the high school chem lab that way.
>Thank goodness for armored-glass fume hoods.
>
>> I remain amazed that hydrogen is used as an insulator on power plant
>> electric generators.  I'd think it'd be very easy in such a place for
>> loose spark to set it off, but apparently it's been working out very well.
>
>It does seem paradoxical.  But hydrogen's thermal conductivity is
>very good.  The generators in a local gas-fired plant are cooled
>this way.  They keep the concentration up to at least 90 or 95
>percent; there's not enough oxygen to make a combustible mixture.

Just keep it away from the oxygen, and you will be fine. Modulus some 
hydride formation on some materials.
>
>> Foolish question:  why do they use carbon dioxide instead of plain
>> air to put the fizz in soda pop?  I'd figure plain air would be a
>> lot cheaper.
>
>I think it's because carbon dioxide is a lot more soluble in water,
>especially under pressure.  (Nitrogen is bad enough; ask any scuba
>diver.)

The amount of nitrogen that is dissolved is very minute. A scuba
diver can be killed by a few milligrams of nitrogen.

Carbon dioxide is far more dissolvable; making H2CO3 with water.

It also compresses a whole lot better than air. It condenses a bit
below 100 bar, and then you can store a lot more.

-- mrr

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History--did relay logic (e.g. crossbar switch) need air conditioning? hancock4@bbs.cpcn.com - 2015-12-04 19:44 -0800
  Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Quadibloc <jsavard@ecn.ab.ca> - 2015-12-04 22:19 -0800
  Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Jon Elson <elson@pico-systems.com> - 2015-12-05 13:27 -0600
  Re: History--did relay logic (e.g. crossbar switch) need air conditioning? jhhaynes@earthlink.net - 2015-12-07 13:41 -0800
    Re: History--did relay logic (e.g. crossbar switch) need air conditioning? hancock4@bbs.cpcn.com - 2015-12-07 17:58 -0800
      Re: History--did relay logic (e.g. crossbar switch) need air conditioning? JimP <solosam90@gmail.com> - 2015-12-07 21:31 -0600
        Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Dave Garland <dave.garland@wizinfo.com> - 2015-12-07 23:27 -0600
          Re: History--did relay logic (e.g. crossbar switch) need air conditioning? hancock4@bbs.cpcn.com - 2015-12-07 22:12 -0800
            Re: History--did relay logic (e.g. crossbar switch) need air conditioning? "Osmium" <r124c4u102@comcast.net> - 2015-12-08 07:24 -0600
              Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Ahem A Rivet's Shot <steveo@eircom.net> - 2015-12-08 14:01 +0000
            Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-12-08 20:21 +0000
              Re: History--did relay logic (e.g. crossbar switch) need air conditioning? hancock4@bbs.cpcn.com - 2015-12-08 12:40 -0800
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Lawrence Statton <lawrence@senguio.mx> - 2015-12-08 15:31 -0600
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-12-09 01:04 +0000
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Dave Garland <dave.garland@wizinfo.com> - 2015-12-08 21:23 -0600
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Joy Beeson <jbeeson@invalid.net.invalid> - 2015-12-08 22:40 -0400
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Dave Garland <dave.garland@wizinfo.com> - 2015-12-09 00:46 -0600
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Andrew Swallow <am.swallow@btinternet.com> - 2015-12-09 07:04 +0000
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Ahem A Rivet's Shot <steveo@eircom.net> - 2015-12-09 09:15 +0000
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-12-09 18:27 +0000
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? "Ranger" <r5432@gmail.com> - 2015-12-10 15:39 +1100
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-12-10 15:35 +1100
              Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Andrew Swallow <am.swallow@btinternet.com> - 2015-12-09 06:59 +0000
              Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Bernd Felsche <berfel@innovative.iinet.net.au> - 2015-12-09 23:47 +0800
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Ahem A Rivet's Shot <steveo@eircom.net> - 2015-12-09 17:20 +0000
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Michael LeVine <mlevinespmfltr@redshift.com> - 2015-12-09 10:14 -0800
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? hancock4@bbs.cpcn.com - 2015-12-09 10:21 -0800
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-12-09 18:47 +0000
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Morten Reistad <first@last.name.invalid> - 2015-12-09 21:33 +0100
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Jon Elson <jmelson@wustl.edu> - 2015-12-11 16:56 -0600
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-12-09 18:27 +0000
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? mausg@mail.com - 2015-12-09 20:47 +0000
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? "Osmium" <r124c4u102@comcast.net> - 2015-12-09 17:01 -0600
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? mausg@mail.com - 2015-12-10 10:48 +0000
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Bernd Felsche <berfel@innovative.iinet.net.au> - 2015-12-10 10:52 +0800
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? scott@slp53.sl.home (Scott Lurndal) - 2015-12-10 14:15 +0000
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Anne & Lynn Wheeler <lynn@garlic.com> - 2015-12-10 10:02 -0800
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? hancock4@bbs.cpcn.com - 2015-12-10 10:17 -0800
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? hancock4@bbs.cpcn.com - 2015-12-09 13:10 -0800
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Bernd Felsche <berfel@innovative.iinet.net.au> - 2015-12-10 11:22 +0800
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? mausg@mail.com - 2015-12-10 10:53 +0000
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? JimP <solosam90@gmail.com> - 2015-12-10 17:54 -0600
                Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Lawrence Statton <lawrence@senguio.mx> - 2015-12-09 17:17 -0600
          Re: History--did relay logic (e.g. crossbar switch) need air conditioning? JimP <solosam90@gmail.com> - 2015-12-08 10:03 -0600
            Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-12-08 20:21 +0000
              Re: History--did relay logic (e.g. crossbar switch) need air conditioning? "J. Clarke" <j.clarke.873638@gmail.com> - 2016-01-02 15:32 -0500
      Re: History--did relay logic (e.g. crossbar switch) need air conditioning? Lon <lon.stowell@comcast.net> - 2015-12-13 12:58 -0700

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