Re: Why does electrostatic attraction in water decrease?

[Bernard Cleyet <anngeorg@PACBELL.NET>]

I beg your pardon -- you joke regarding # 1?  (I presume the effect to which your
refer is the rise in the liquid between the charged plates.)

bc  who has only the first ed. wherein the fig. 6-7 is on page 102, and wonders
what he's missing.



Pentcho Valev wrote:

> Bob Sciamanda wrote:
>
> > I quit.
>
> So do I. If non-conservative forces are involved, the energy of an
> electrostatic field cannot be calculated in terms of the existing theory. Let
> me illustrate the problem for the last time by refering to fig. 6-7 on p. 112
> in W. Panofsky, M. Phillips, Classical Electricity and Magnetism, 2nd ed.,
> Addison-Wesley, 1962. As a pair of (vertical) capacitor plates partially dip
> into a dielectric liquid, the liquid inside the capacitor is shown to rise
> high above the surface of the liquid that is outside the capacitor. Four
> hypotheses seem relevant:
>
> 1. Panofsky gives a wrong picture - the effect does not exist.
>
> 2. If we punch a hole in the plate, below the surface of the liquid inside the
> capacitor but above the surface of the liquid outside the capacitor, no liquid
> will leak out through the hole.
>
> 3. The liquid will leak out in violation of the first law.
>
> 4. The liquid will leak out in violation of the second law.
>
> Pentcho Valev