On Mar 25, 2005, at 9:34 AM, Peter wrote:

> It is much more reliable to measure its capacitance
> (water has epsilon-r 80).

Does water still have such a high dielectric constant when impurities
have rendered it moderately conductive?  A material that is
simultaneously conductive and dielectric strains my memories of
college physics, but I don't see why it couldn't work as long as
steps are taken to prevent actual conduction...

BillW
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