[NewCandle] that which reacteth not and is clear

[Nick Reiter]

Hi Horace,

Thanks for referencing your Casimir Cavity flow
design!  I remember reading that a year or so back,
but it's very germane to the topic that seems to have
come around again eh?  Appreciated.

And I do like the idea of the UV transparent plastic
binder too.

Where I tend to fall short in brainpower is the
understanding of how different surface geometries
alter the Casimir force.  The calculation for parallel
conducting surfaces is classic, and understandable to
me.  I've never seen the modified formula for force
between spheres, though I've been told there is one. 
(The generally used geometry for demonstrating the
Casimir force seems to be a planar surface and a
spherical probe on a load cell or AFM stylus.)

n
--- Horace Heffner <hheffner at mtaonline.net> wrote:

> It will be cool if that works out for you, but I
> expect there is a  
> need to break the symmetry somehow, maybe by use of
> a flowing  
> medium.  Here's an approach I came up with some time
> ago, but there  
> is too little justification to try it:
> 
> http://mtaonline.net/~hheffner/ZPE-CasimirThrust.pdf
> 
> Perhaps the chambers could be scaled up if an
> aluminum slurry were  
> pumped through them.  The ideal situation would be
> to use a  
> compressible fluid so the effective gap (mfp) size
> changes selectively.
> 
> Say, if your liquid approach works,  I know gelatin
> gells with  
> alcohol, so maybe it, or some gelling substance that
> is UV  
> transparent, works with one of your solvents, in
> which case you could  
> make a solid. Hmmm, there is a UV transparent
> acrylic sheet available  
> from Cadillac Plastics, if they are still in
> business, because I  
> bought some many years ago to make a window I could
> suntan behind  
> here in Alaska in the middle of winter.  It might be
> possible to make  
> a UV transparent plastic binder by dissolving some
> of it.   Maybe  
> cycanoacrylate (crazy glue) works fine as is - or
> diluted somewhat.   
> Just free associating...
> 
> 
> 
> On Feb 25, 2008, at 4:37 PM, Nick Reiter wrote:
> 
> > Hi Horace and Keith,
> >
> > Thanks both for the ideas.  I guess I have an
> > assortment of candidates then, at my disposal, as
> I
> > have acetone, benzene, and ethanol in decent
> purity,
> > and xylene in not as decent purity.
> >
> > The idea comes on the heels of noticing that
> "Uncle"
> > Al Schwartz appears to have re-aligned himself
> behind
> > the casimatter concept again, which at first he
> > trumpeted and then poopoo'ed about 3 years ago.  I
> was
> > daft in not saving the link, but I saw it being
> > bantered about seriously on a Casimir and Vacuum
> > discussion board a couple of weeks ago.  Schwartz
> > original suggested structure was to build up many
> > layers of aluminum films spaced with about a half
> UV
> > wavelength worth of mag fluoride, which is UV
> > transparent past 250nm.  Last year, I made about a
> 10
> > fold version of this by thermal evap on glass, but
> far
> > too few layers to really do much with.
> >
> > OTOH, I got to thinking that if one swirled up
> > aluminum spherules suspended in a UV transparent
> > vehicle, one might produce an aggregate transient
> > casimatter "negative energy density" mass
> condition.
> >
> > The experiment I am anxious to try would be to
> take a
> > sealed flask with nano or micro - Al in say
> benzene or
> > ethanol, swirl it up into a whirling state, weigh
> it,
> > then take re-weigh readings as the particles
> settle
> > out into a quiescent pile.
> >
> > And then hook it to the LEDs.
> >
> > Just kidding on that last.
> >
> > Thanks again, guys,
> >
> > N
> >
> >
> > --- Horace Heffner <hheffner at mtaonline.net> wrote:
> >
> >>
> >> On Feb 25, 2008, at 12:13 PM, Nick Reiter wrote:
> >>
> >>> Hey folks,
> >>>
> >>> I need some materials selection advice.  The
> topic
> >> is
> >>> a casimatter experiment, liquid phase.
> >>>
> >>> Are there any (hopefully low viscosity) liquid
> >>> compounds that:
> >>>
> >>> 1.  Would be able to non-reactively suspend /
> >> enclose
> >>> micron to submicron spherules of aluminum...
> >>>
> >>> AND
> >>>
> >>> 2.  Have as low an absorption or high a
> >> transparency
> >>> as possible, out past 250nm heading blue-ward.
> >>>
> >>
> >> Since scintillation counting occurs in the UV
> range,
> >> solvents used
> >> for that purpose are probably ideal.  Benzene,
> >> and/or toluene are
> >> commonly used as solvents for liquid
> scintillation
> >> counting, as well
> >> as fluorobenzene or xylene,  separately or in
> >> mixtures.
> >>
> >>
> >> Horace Heffner
> >> http://www.mtaonline.net/~hheffner/
> >>
> >>
> >>
> >>
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> >
>
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> >>
> >
> >
> > The Holy Grail 'neath ancient Roslin waits.
> > The blade and chalice guarding o'er Her gates.
> > Adorned in the masters' loving art, She lies;
> > She rests at last beneath the starry skies.
> >
> >
> >        
> >
>
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> 
> 
> Horace Heffner
> http://www.mtaonline.net/~hheffner/
> 
> 
> 
> 
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The Holy Grail 'neath ancient Roslin waits.
The blade and chalice guarding o'er Her gates. 
Adorned in the masters' loving art, She lies;
She rests at last beneath the starry skies.


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