It is normal for conductivity to drop as particles form since particles don't contribute to conductivity and they form out of ions over time.
I had previously thought that these converted ions would all contribute to a stronger TE but here's the thing...
I made several batches using the latest evolution of the Series 2 silverpuppy that metered out at around 22 uS with a PWT when done. [I use thermal convection stirring which does heat the water some]
After sitting for a week or so, re-metering yielded 12 uS but the TE had not changed significantly from virtually none.
I ran an experiment to document the effects of heat on conductivity where a PWT is concerned. [Result: Over a 30 deg F change from 70 to 100 as worst case high temp, the difference was 2.6 uS. I'm calling it 3 uS..so, that 22 uS will be known as 19 uS to account for temperature distortion as worst case]
So, starting at 19 uS dropping to 12 uS and no real change in TE...what happened?
Is there such a thing as a non conductive "particle" that's too small for visible light to reflect off of?
Or is the water itself doing something strange that throws the PWT off that heat soak doesn't explain?
Anybody have a clue?
Ode
At 09:36 AM 11/21/2003 -0500, you wrote:
>>>>
Hi, Jonathan and Ode!<<<<
Thanks for your input.
The electrodes remained in the
vessel throughout the run. This
was done because it was a
control experiment for weak-
current electrolysis.
On reflection, I can identify at
contamination or extraneous
factors, though there are reasons
to discount each of them.
1) The process took place in an
environment with large amounts of
chalk dust generated every day, i.e.
a school. But chalk dust is mostly
large particulate. On the other hand,
some portion of it is small enough
to collect in people's lungs and
make them cough.
2) The process took place in a
place illuminated by fluorescent
lights. And Svedberg discovered that
UV will sinter metallic silver in
water into CS. On the other hand,
the glass tube in a fluorescent light
blocks the large amounts of UV
generated inside the tube.
3)The process took place in a
place that received direct sunlight
for much of the day. On the other
hand, the panes of window glass
block out most of the UV in
sunlight.
So it still remains a mystery to me.
One thing I have learned, though, is
a greater respect for the Tyndall Effect.
I also wonder why it is not exploited
more, especially as a quantitative
metric.
We have sophisticated electronics to
measure pH, conductivity, total dissolved
solids, temperature, time control and
so forth.
Tyndallometry was put on a quantitative
basis in the age of Victorian and
Edwardian science, long before the
availability of electronics. The light
sources back then we heliostats and
carbon arc lamps, which are vastly
inferior compared to the laser diode
pointers affordable by all of us today.
In fact, there are now green laser
diode pointers on the market that
might make it possible, when used
with a red laser diode, for ordinary
people to do Tyndall spectroscopy.
Do-it-yourself Tyndallometry and
Tyndall spectroscopy would give us
a handle on particle size distribution
and concentrations of particulate
surface area. If I am not mistaken,
these have important clinical
implications. And after all, our
primary goal is enhancement of
health.
Well, thank you for your comments.
They have already given me a lot
of food for thought.
Best wishes,
Matthew
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