[Homeroast] Poisson's ratio WAS: Re: Compak vs Macap vs Rocky Grinders

Robert Yoder robotyonder at hotmail.com
Wed May 19 16:26:41 CDT 2010


Bouillabaisse been beddy, beddy good to me!

 

name withheld due to embarassment,

AKA:robert yoder
 
> Date: Wed, 19 May 2010 12:08:12 -0700
> From: doughoople at gmail.com
> To: homeroast at lists.sweetmariascoffee.com
> Subject: Re: [Homeroast] Poisson's ratio WAS: Re: Compak vs Macap vs Rocky Grinders
> 
> One word: bouillabaisse. :)
> 
> Doug
> On Tue, May 18, 2010 at 9:30 AM, Tom & Maria - Sweet Maria's Coffee <
> sweetmarias at sweetmarias.com> wrote:
> 
> > Doesn't this mean "Fish's Law"?
> >
> > Are we gonna take our queues from fish now? French fish at that?
> >
> > ;-0
> >
> >
> > Engineering is all voodoo anyway ;)
> >>
> >> --
> >> Ryan M. Ward
> >>
> >> *Note: This email was sent from a computer running Ubuntu Linux 9.10
> >> (Karmic Koala)
> >> http://www.ubuntu.com
> >>
> >> **Note: This signature was placed here by me and is not
> >> automatically-generated-annoying-end-of-email-spam placed here by anyone
> >> other than myself. I am a Linux nut and am doing my part to support open
> >> source software and the Linux and Ubuntu communities by getting the word out
> >> with each email I send, I encourage you to do the same.
> >>
> >>
> >>
> >>
> >> Date: Tue, 18 May 2010 07:59:46 -0700
> >>> From: theotherjo at gmail.com
> >>> To: homeroast at lists.sweetmariascoffee.com
> >>> Subject: Re: [Homeroast] Poisson's ratio WAS: Re: Compak vs Macap vs
> >>> Rocky Grinders
> >>>
> >>> Mike,
> >>> Nice to hear a human description of a "Natural" force of nature. We
> >>> being
> >>> part of nature. Although some would argue I'm not at all natural of this
> >>> earth like my mother who used to ( tongue in cheek I'm sure ) tell
> >>> friends
> >>> when introducing me as a child that "Joe did not come by stork, there
> >>> was
> >>> this small shiny ship that landed one night in our neighborhood." Could
> >>> this
> >>> be why I love Sci fi and this black gold that runs through this list's
> >>> vein's? I did a wiki pedia and some other reading so I would have a clue
> >>> when you and RayO or anyone else shares information on this 'spro
> >>> tamping
> >>> topic.
> >>> Very interesting and fun now back to my coffee.
> >>> JoeR
> >>>
> >>> On Tue, May 18, 2010 at 7:34 AM, Mike Koenig <koenig.mike at gmail.com>
> >>> wrote:
> >>>
> >>> > I'm probably splitting hairs here, but Poisson's effect happens on the
> >>> > molecular level, with bonds elongating under pressure or strain. I'm
> >>> not a
> >>> > geoscience guy, but I imagine the effect effect would happen in rocks,
> >>> > dense
> >>> > clays and shale, etc, but what you are seeing in a coffee puck is
> >>> > interactions between discrete non-uniform particles.
> >>> >
> >>> > I'm not arguing at all that you don't get some lateral expansion
> >>> during
> >>> > tamping, since that certainly does happen, but it's not necessarily
> >>> > uniform,
> >>> > and dependent on the distribution (and re-arrangement under force) of
> >>> the
> >>> > particles, as opposed to poisson's effect, which describes a
> >>> predictable
> >>> > amount of lateral expansion based on the change axial length. If the
> >>> > expansion was due to poisson's effect, the puck would spring back when
> >>> you
> >>> > let go of the tamper. What you are getting is some re-arrangement of
> >>> the
> >>> > particles under force (like when you step in sand, and it moves out of
> >>> the
> >>> > way under your foot).
> >>> >
> >>> > --mike
> >>> >
> >>> >
> >>> >
> >>> > On Tue, May 18, 2010 at 3:01 AM, <raymanowen at gmail.com> wrote:
> >>> >
> >>> > > Then I don't know why the grounds would press out and seal against
> >>> the
> >>> > > sides
> >>> > > of the basket when you are only applying axial force with the
> >>> tamper.
> >>> > > Hydrostatic?
> >>> > >
> >>> > > I hope I don't owe a refund of all our pay at the Geophysics
> >>> Research
> >>> > > Institute at CSM. Please don't tell Dr. Levent Ozdemir or Dr. Russ
> >>> Miller
> >>> > > we
> >>> > > were doing bad oil shale research. Damn!
> >>> > >
> >>> > > What supports you when you walk on a sandy beach?
> >>> > >
> >>> > > Teach me, please. -ro
> >>> > > _______________________________________________
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> >>>
> >>>
> >>> --
> >>> Ambassador for Specialty Coffee and palate reform.
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> >
> > --
> > -Tom
> >
> >
> > ____________________________________________________________________________
> > "Great coffee comes from little roasters" - Sweet Maria's Home Coffee
> > Roasting
> > Thompson & Maria - http://www.sweetmarias.com
> >
> > ____________________________________________________________________________
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