[filmscanners] RE: Re:Digital PIC

["Austin Franklin" <darkroom@ix.netcom.com>]

> > Actually, the issue is with x-ray MACHINES
> > that use large electric motors for the belts...
>
> Lots of things use electric motors of various sizes, though.  Heck, even a
> disk drive contains an electric motor in _very_ close proximity
> to the media
> (as well as a voice coil to actuate the heads, also generating a magnetic
> field).

> I read once that a rule of thumb is that anything that doesn't visibly
> attract magnetic media isn't likely to erase it if it isn't in contact
with
> it.  I suppose there are rare exceptions, such as MRI scanners.

Electric motors/x-ray machines in airports WERE (and may very well still be)
a "problem" with removable magnetic media.  Within Digital (DEC), it was a
well documented fact.  I am not going to produce memos that passed over my
desk years ago, and I do not have today.

Disk drives/drive motors are an entirely different issue, and obviously,
they are designed to work as they do...

I don't know about you, Anthony, but I have no plans on climbing into the
x-ray machine and observe if there is any "visible attraction".  Besides,
that "rule of thumb" is just plain silly.

Austin

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