Re: Platinum 5.25" drive problem

["william strutts" <wrstrutts1@nospam.home.com>]

"Michael J. Mahon" <mjmahon@aol.com> wrote in message
20010801122624.16450.00003887@ng-mq1.aol.com">news:20010801122624.16450.00003887@ng-mq1.aol.com...
> Stephen Shaw wrote:
>
> >I was once working in a hospital near an MRI machine (magnetic resonance
> >imaging) a cleaner had left a metal trashcan at the doorway of the room.
When
> >the MRI machine was switched on that can flew about 45 feet and attached
> >itself
> >to the machines surround.
>
> This phenomenon has been in the news lately, as a result of a
> fatal accident.
>
> > If you used a magnet that powerful yes I'd say you
> >would magnetize disk drive heads but as I have said before I have been
> >resurrecting 3.5" HD disks for over 3 years without any problems with my
3.5"
> >drives. I have been repairing electronic items for over 30 years without
ever
> >hearing of this sort of problem before. I know I don't know everything
> >electronic but I doubt that the heads would be magnetized.
>
> In fact, the degree of magnetization of _anything_ is limited by its
> magnetic properties, and not by the strength of the magnetic field
> magnetizing it.  Once the material is saturated in some alignment,
> then additional field strength does nothing.
>

Does this have something to do with the hysteris loop?
--
--
William R. Strutts - wrstrutts1@nospam.home.com - Whatever!

C'est moi!  http://www.facelink.com/wrstrutts

Just hacking away...

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