Re: Is electromagnetic field theory unified?

From: Timo Nieminen (timo_at_physics.uq.edu.au)
Date: 02/28/05 

Date: Tue, 1 Mar 2005 08:38:21 +1000

On Mon, 28 Feb 2005, Franz Heymann wrote:

> "Timo Nieminen" <timo@physics.uq.edu.au> wrote:
>
> > > > However, a magnetic sphere, with permittivity
>
> permeability

Actually, I did mean permittivity. For example, if it is in free space,
and has epsilon = epsilon_0, then its electric dipole moment will be zero.
This means that any scattering will result purely from the induced
magnetic dipole moment (and higher multipoles).

If not in free space, then any induced electric multipole moments will be
invisible if epsilon_sphere = epsilon_medium. 

-- 
Timo Nieminen - Home page: http://www.physics.uq.edu.au/people/nieminen/
Shrine to Spirits: http://www.users.bigpond.com/timo_nieminen/spirits.html

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