Re: [Phys-l] Disc polarizability

[Bernard Cleyet <bernardcleyet@redshift.com>]

Hej!

Panzer!

It has the needle, too,  which was a side issue of interest!

More later.

bc

Brian Whatcott wrote:

> At 03:00 PM 2/23/2007, BC, you wrote:
>
>  
>
> > In Strong's text Hull claims the polarizability of a metal disc is (2/3)
> > the permitivity (space) times its diameter cubed.  Finding this for a
> > sphere and even an infinite cylinder is trivial (once one has seen it
> > done).  But a disc, no.  Anyone know how it's done (not numerically)?
> > I've looked in many texts *, googled and not found it.
> >
> >
> > * not the best, unfortunately,
> >
> > bc, wonders, will JD come to his rescue?
> >    
>
>    <http://www.slac.stanford.edu/grp/arb/tn/arbvol2/ARDB114.pdf>
>
> Page 2 shows a form factor consisting of the ratio
>  of disk thickness / disk diameter to find the polarizability of a disk
> compared to that of the sphere.   But this URL appeals to numerical
>  methods - specifically MATLAB .
>
>
> Brian Whatcott    Altus OK    Eureka! 
>
>
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