Date: Wed, 23 Feb 2011 16:44:39

Author: chuck britton

Subject: Re: Tin Foil Capacitor



This is fascinating!! (and confusing!!! - which helps make something
fascinating for me)

We're talking DC here - so the frequency dependence is interesting.

I'm wondering what Phys-L might have to say on these differences
between quartz and soda glass.

At 12:34 PM -0600 2/23/11, Cliff Bettis wrote:
>As I understand it, the difference between quartz and soda glass is in the
>imaginary part of the dielectric constant which accounts for the frequency
>dependence of the material.
>Solid state properties of real materials are complicated. Another
>interesting distinction between soda glass and quartz is the rod that's
>frosted on one end and polished on the other. If you rub both sides with
>silk, you get opposite charges on the soda glass rod but not on the quartz
>glass rod.

From Wed Feb 23 17:25:52 2011