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Groups > sci.physics > #712108 > unrolled thread
| Started by | Nomen Nescio <nobody@dizum.com> |
|---|---|
| First post | 2018-11-08 10:06 +0100 |
| Last post | 2018-11-09 13:56 +1300 |
| Articles | 7 — 7 participants |
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Re: Here you go, Apple lovers! Eat this! Nomen Nescio <nobody@dizum.com> - 2018-11-08 10:06 +0100
Re: Here you go, Apple lovers! Eat this! Jean-David Beyer <jeandavid8@verizon.net> - 2018-11-08 08:11 -0500
Re: Here you go, Apple lovers! Eat this! John Hasler <jhasler@newsguy.com> - 2018-11-08 08:37 -0600
Re: Here you go, Apple lovers! Eat this! William Unruh <unruh@invalid.ca> - 2018-11-09 16:49 +0000
Re: Here you go, Apple lovers! Eat this! "Cybe R. Wizard" <cybe_r_wizard@WizardsTower.invalid> - 2018-11-09 15:25 -0600
Re: Here you go, Apple lovers! Eat this! Paul <nospam@needed.invalid> - 2018-11-10 00:42 -0500
Re: Here you go, Apple lovers! Eat this! Eric Stevens <eric.stevens@sum.co.nz> - 2018-11-09 13:56 +1300
| From | Nomen Nescio <nobody@dizum.com> |
|---|---|
| Date | 2018-11-08 10:06 +0100 |
| Subject | Re: Here you go, Apple lovers! Eat this! |
| Message-ID | <22e74d03a685164db55f9c8f9bd9bc5e@dizum.com> |
In article <prfngq$j3j$1@news.mixmin.net> Nomen Nescio <noreply@mixnym.net> wrote: > > After serious thinking John Hasler wrote : > > Andy Burns writes: > >> I'm not clear why an oscillator would be "open" to the atmosphere, > >> whereas a barometer would need to be. > > > > They weren't open. They were sealed, and most likely contained > > either a vacuum or a specific gas. However, helium diffuses through > > everything at an astounding rate, and something about these > > particular parts made them especially susceptible to small amounts of > > helium. It probably changed the velocity of sound inside the device > > just enough to screw it up. Other brands of oscillator might also > > have been affected but if they merely shifted off frequency a bit no > > one would have noticed. > > > > It's also possible that these oscillators didn't stop either, but > > shifted frequency enough to cause the operating system to become > > alarmed and/or confused. > > I wonder how many Apple people have followed their bad oscillator > apps off a cliff so far? > > This brings up an idea for a new hack. Get in front of a self > driving car and open up a helium bottle. helium rises...
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| From | Jean-David Beyer <jeandavid8@verizon.net> |
|---|---|
| Date | 2018-11-08 08:11 -0500 |
| Message-ID | <ps1cld027bv@news1.newsguy.com> |
| In reply to | #712108 |
On 11/8/18 4:06 AM, Nomen Nescio wrote: > helium rises... So what: in a mixture of gasses, they stay mixed due to Brownian movement. -- .~. Jean-David Beyer Registered Linux User 85642. /V\ PGP-Key:166D840A 0C610C8B Registered Machine 1935521. /( )\ Shrewsbury, New Jersey http://linuxcounter.net ^^-^^ 08:05:01 up 29 days, 16:48, 2 users, load average: 4.42, 4.26, 4.11
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| From | John Hasler <jhasler@newsguy.com> |
|---|---|
| Date | 2018-11-08 08:37 -0600 |
| Message-ID | <877ehn1vpq.fsf@dhh.gt.org> |
| In reply to | #712109 |
Jean-David Beyer writes: > So what: in a mixture of gasses, they stay mixed due to Brownian > movement. The helium isn't mixed with the air when it comes out of the bottle. The plume of helium will tend to rise the same way a plume of hot air does. However, if you direct the jet of helium under the car... -- John Hasler jhasler@newsguy.com Dancing Horse Hill Elmwood, WI USA
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| From | William Unruh <unruh@invalid.ca> |
|---|---|
| Date | 2018-11-09 16:49 +0000 |
| Message-ID | <ps4dq0$me$1@dont-email.me> |
| In reply to | #712109 |
On 2018-11-08, Jean-David Beyer <jeandavid8@verizon.net> wrote: > On 11/8/18 4:06 AM, Nomen Nescio wrote: >> helium rises... > > So what: in a mixture of gasses, they stay mixed due to Brownian movement. When it escapes it is NOT a mixture. It is pure He, and that blob rises. Even if it is mixed the He tends to go to the top ( which is one of the reason the earth's atmosphere has no He or H since they rise to the top of the atmosphere and escape). Just like you are advised to crawl in a fire because the hot air and hot combustion gases rise because they are (only slightly) less dense than cold air. He is 1/8 the density of air. >
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| From | "Cybe R. Wizard" <cybe_r_wizard@WizardsTower.invalid> |
|---|---|
| Date | 2018-11-09 15:25 -0600 |
| Message-ID | <20181109152537.5e1c6930@WizardsTower> |
| In reply to | #712199 |
On Fri, 9 Nov 2018 16:49:04 -0000 (UTC) William Unruh <unruh@invalid.ca> wrote: > He is 1/8 the > density of air. Thank you for that. Cybe R. Wizard -- My other computer is a HOLMES IV
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| From | Paul <nospam@needed.invalid> |
|---|---|
| Date | 2018-11-10 00:42 -0500 |
| Message-ID | <ps5r3f$ll4$1@dont-email.me> |
| In reply to | #712214 |
Cybe R. Wizard wrote:
> On Fri, 9 Nov 2018 16:49:04 -0000 (UTC)
> William Unruh <unruh@invalid.ca> wrote:
>
>> He is 1/8 the
>> density of air.
>
> Thank you for that.
>
> Cybe R. Wizard
And what of Hydrogen ?
Won't anyone think of the Hydrogen ?
I was burned by Hydrogen once. And the
hydrogen explosion (a separate event), just
lifted the floor sbove my head... a little bit.
And none of my family members came running, to see
what happened. That was the strangest event
of all.
*******
Come to think of it, I got an important empirical
result there. The hydrogen did stay as a cloud
near the ceiling. When I was in the process of
"burning off the excess for safety", the container
I was working with was still evolving a tiny amount
of hydrogen. And normally, I'd burn off the hydrogen
before anything nasty happened. In that case, I
waited a little too long to tend to it, and there
was a cloud over my head (that you can't see). (The
experiment was initially done outdoors for safety,
but I decided to bring it inside to disassemble it,
on the assumption the reaction had run to completion.
Bad assumption. Bad maintenance procedure.)
Eventually, the experiments with Hydrogen... stopped.
The Tevatron results here suggested that small gases
like that, they disperse and form a uniform
concentration from top to bottom, inside the
enclosure (room, building). But mine only had
time to float to the ceiling, and wasn't all
that dispersed.
http://lss.fnal.gov/archive/2005/conf/fermilab-conf-05-635-ad.pdf
"The tests showed that gases, more readily than
expected, diffused through an air column in the
direction opposing buoyancy."
https://en.wikipedia.org/wiki/Graham%27s_law
Well, that's save me buying a copy of Fluent.
Paul
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| From | Eric Stevens <eric.stevens@sum.co.nz> |
|---|---|
| Date | 2018-11-09 13:56 +1300 |
| Message-ID | <7pm9udht4helpit8lt9rhg5rgksiuq6tka@4ax.com> |
| In reply to | #712108 |
On Thu, 8 Nov 2018 10:06:47 +0100 (CET), Nomen Nescio <nobody@dizum.com> wrote: >In article <prfngq$j3j$1@news.mixmin.net> >Nomen Nescio <noreply@mixnym.net> wrote: >> >> After serious thinking John Hasler wrote : >> > Andy Burns writes: >> >> I'm not clear why an oscillator would be "open" to the atmosphere, >> >> whereas a barometer would need to be. >> > >> > They weren't open. They were sealed, and most likely contained >> > either a vacuum or a specific gas. However, helium diffuses through >> > everything at an astounding rate, and something about these >> > particular parts made them especially susceptible to small amounts of >> > helium. It probably changed the velocity of sound inside the device >> > just enough to screw it up. Other brands of oscillator might also >> > have been affected but if they merely shifted off frequency a bit no >> > one would have noticed. >> > >> > It's also possible that these oscillators didn't stop either, but >> > shifted frequency enough to cause the operating system to become >> > alarmed and/or confused. >> >> I wonder how many Apple people have followed their bad oscillator >> apps off a cliff so far? >> >> This brings up an idea for a new hack. Get in front of a self >> driving car and open up a helium bottle. > >helium rises... Helium plumbate? -- Regards, Eric Stevens
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