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Re: Magnetization of Toroid



8/3/96

You wrote: 

>You always take your helment off when sighting through a lensatic 
compass
>because metal will pull the needle. Try it with any piece of metal 
that is
>magnetic, lay a piece on a table and approach it with a compass. If 
north is
>behind you and you are walking south towards the metal as you get 
close the
>needle will swing 180 degrees toward the metal and away from magnetic 
north.
>It seems like a piece of steel or iron acts as an amp for the earths 
field.


This is all true for a nonmagnetized piece of ferromagnetic material 
and a compass.  However, an oriented magnetic field seems to be 
imparted to the toroid by the TC discharge.  It can be "mapped" by 
moving a compass around the outer diameter of the toroid.  Also, 
placing and centering the compass in the the center of the toroid 
definitely aligns it to the magnetic field imparted to the toroid.  The 
field in the toroid has two magnetic poles by this method.  The 
interesting part is that the orientation of this field can be changed 
somewhat by firing the coil with the toroid in a different position in 
reference to the coil.

Questions are.  Does a TC RF field impart an oriented field magnetic 
field on a ferromagnetic toroid?  Would a DC TC discharge impart an 
oriented field magnetic field on a ferromagnetic toroid?  Do 
surrounding environmental EM fields influence TC discharges?

snip

RWW