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Re: Flat conductors (was I need help).

..... If the conductivity is high, is seems to me
that the patterns would be dominated by conduction effects, as they are on
paper. Whereas is the conductivity was very low, you might expect to see
something that looks more electrostatic...or so it would seem.

what do you'all think?


In a large tank (measurements confined to near ~ centrally located electrodes),
the conductivity is irrelevant (as long as the electrometer's resistance is
high compared to the impedance of the tank.).

bc so he thinks, even for the semi infinite parallel cylinders



kowalskil wrote:

Carl Mungan was describing experiments in a tank last
year. It would be very interesting to know if a transition
from the conductive behavior to electrostatic behavior
could be observed. Are you there Carl? Who else is in a
position to try to explore Joseph's idea?

I think I will share something very interesting soon. But
let me do this again first. The Pasco paper offers many
new experiments. Please start experimenting, if you can.
Student research projects can be exciting in this area.

Ludwik Kowalski

Joseph Bellina wrote:

The original experiments, I think, of this sort were not done with
resistive paper but with flat tanks of conducting solutions in which metal
objects were placed. I wonder if any of the issues you have been
discussing could be probed by looking at the patterns as a function of the
conductivity of the liquid. If the conductivity is high, is seems to me
that the patterns would be dominated by conduction effects, as they are on
paper. Whereas is the conductivity was very low, you might expect to see
something that looks more electrostatic...or so it would seem.

what do you'all think?

joe

Joseph J. Bellina, Jr. 219-284-4662
Associate Professor of Physics
Saint Mary's College
Notre Dame, IN 46556