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<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=292004715-07092007>'Morning Fred.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=292004715-07092007></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=292004715-07092007>Yeah,
that half cell reaction is what makes it so hard to establish "ground" in
an</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=292004715-07092007>electrolyte. Were the electrolyte a true conductor you
could establish ohmic</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=292004715-07092007>contact and call that 0 volts. But in an electrolyte,
you immediately get that</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=292004715-07092007>double
layer formed and so your external ground is .1 to 1 volts
different</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=292004715-07092007>depending on the metal, electrolyte, etc.
</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=292004715-07092007></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=292004715-07092007>Why
not go the whole hog and fill the copper float with active carbon ( from
your</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=292004715-07092007>friendly neighborhood tropical fish store ) and salt
water? That'd give you</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=292004715-07092007>a real
big ball 'o charge. Packed tightly, you'll have an ohmic
connection</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=292004715-07092007>from
the carbon to the copper.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=292004715-07092007></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=292004715-07092007>In
fact, if it doesn't work, can we call that particular test definitive? I
can't</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=292004715-07092007>think
of a better one for your idea....</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=292004715-07092007></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=292004715-07092007>K.</SPAN></FONT></DIV>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV align=left class=OutlookMessageHeader dir=ltr><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B>
newcandle-bounces@ipdiscover.com
[mailto:newcandle-bounces@ipdiscover.com]<B>On Behalf Of </B>Frederick
Sparber<BR><B>Sent:</B> Friday, September 07, 2007 3:58 AM<BR><B>To:</B>
newcandle@ipdiscover.com<BR><B>Subject:</B> [NewCandle] Measuring Half-Cell
Charge<BR><BR></DIV></FONT>
<DIV>It seems to me that filling a $5.00 copper toilet bowl float </DIV>
<DIV>with an aqueous electrolyte and suspending it as a plumb-bob</DIV>
<DIV>between a pair of electrically charged plates will allow
measurement</DIV>
<DIV>of the double layer (interface) charge.</DIV>
<DIV> </DIV>
<DIV>I'm not sure about water-reactive aluminum that forms</DIV>
<DIV>the aluminate ion, especiallyif you have enough aluminum mass</DIV>
<DIV>to store up the exothermic heat to accelerate Nick's
aluminum-water-electrolyte</DIV>
<DIV>reaction. ::-)</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><A
href="http://en.wikipedia.org/wiki/Contact_electrification"><STRONG>http://en.wikipedia.org/wiki/Contact_electrification</STRONG></A></DIV>
<DIV> </DIV>
<DIV>Fred</DIV></BLOCKQUOTE></BODY></HTML>