On 10/2/2010 9:01 PM, Neville Munn wrote:
Thanks very much for that Marshall, much appreciated.
On re-reading my comments I did notice two oversights on my part, I
forgot about the accuracy % factor in meters, and I overlooked the
stupidly simple uS and TDS equivalent or conversion, sorry about
that. My constant oversights of the simple and obvious are quite
frustrating at times.
A final comment if you will, as your closing comment was significant
to a thought which has been rattling around in my head for some
time...endothermics.
I've considered for some time that the action of ions colliding in an
aqueous solution must generate some form of energy as they break
through that energy barrier or Nernst or double layer surrounding the
ion, and the result of those impacts could only generate one form of
energy...heat. It would not be the actual impact of those ions or
particles necessarily which generates energy as positive and negative
simply attract as a natural law of unlike poles attracting, but rather
it would be the friction created via the *breaking through of that
energy barrier* which surrounds the ion. Would that assumption be
correct?
In the molecular and atomic world motion and heat are different ways of
expressing the same thing. So if you consider something forcing its way
through the energy barrier, that takes energy to do so, and the result
is a drop in velocity, in some cases to near 0, and a LOSS of heat. That
is it would tend to be endothermic.. It would take energy to penetrate
the barrier, and the kinetic energy of the particle or molecule would
have been converted to potential energy when it does so. Only kinetic
energy shows up as heat thus thus this would result in a loss of themal
energy..
Marshall
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