Re: Magnetization of Toroid

• To: tesla-at-pupman-dot-com
• Subject: Re: Magnetization of Toroid
• From: Malcolm Watts <MALCOLM-at-directorate.wnp.ac.nz>
• Date: Wed, 7 Aug 1996 08:22:25 +1200

Hi Richard all,
                 This part of your reply caught my eye...

>  A SQUID (super conducting quantum interference device) has been used to 
> measure micro guass fields in charging capacitor dielectrics and no 
> magnetic field has been detected. (D.F. Bartlett 1990 American Journal of 
> Physics)  There goes the B component of Maxwell's displacement current!!

I would have thought that in the dielectric itself there is 
essentially no current flow. Torsion yes, stress etc. but not 
conductive current flow. Wouldn't current flow be a requirement
for the generation of a magnetic field? How thick was the dielectric 
tested?

Malcolm 

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