Re: Isotropic Capacity

• To: tesla-at-poodle.pupman-dot-com
• Subject: Re: Isotropic Capacity
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Wed, 21 May 1997 17:20:34 -0500
• Approved: tesla-at-stic-dot-net

Subject:  Re: Isotropic Capacity
  Date:   Wed, 21 May 1997 10:07:57 -0500
  From:   David Huffman <huffman-at-FNAL.GOV>
    To:   Tesla List <tesla-at-pupman-dot-com>


OK
The earth has an isotropic capacitance of about 712uF =
4*pi*e0*radius, so about how much charge? Is it measured by the
voltage difference between conductors at different elevations?

Just curious
Dave Huffman
> >
> >
> >  To All -
> >
> >  The dictionary defines "Isotropic" as "equal physical properties
> > along all axes". As an example, an isolated charged sphere in space
> > would have an isotropic capacity because the charge on the sphere
> > would extend equally in all directions.
> >
> >  Isotropic capacity can only be a theoretical possibility.
> > However, if the earth, moon, etc. are charged they would have
> > isotropic capacity. Does anyone know if the earth, etc. has a
> > charge? 
> 
> The earth does indeed have a charge.  Most planets have net charges.
> Most of the charge accumulated relates to solar wind activity and 
> varies a good deal with time.
> 
> R.hull, TCBOR
>

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