On Thu, 12 Jun 2008 11:53:10 -0700 (PDT), rambotrout
<rambotrout@[EMAIL PROTECTED]
> wrote:
>If two electrodes are sandwitching two dielectric materials with very
>different dielectric constants (but the same thickness), say, water
>and glass. Would the new dielectric constant lies in between the
>original two?
You can insert a 3d plate in the sandwich, then analyze 2 capacitors
in series.
The charge Q and displacement D = Q/A = Ei*Ki/A are constant
throughout including on the plates. The individual voltages are
inverse to the dielectric constant. Vi = Ei*Ti (T = thickness. A =
area).
>What would be the electric field in between the dielectric materials?
>I suppose not half of the total electric field imposed by the
>electrodes. Would the larger dielectric constant material take up more
>of it?
>
>If the water contains ions, would that change its dielectric constant
>from that of its pure form (about 80)?
>
>Is there any relation between dielectric constant and dielectric
>strength?
John Polasek
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