Date: Fri Nov 3 15:44:51 2006

Author: Wallin, Stephen R

Subject: Re: Magnetizing Old Bar Magnets

I wonder if that's the same Stooges crew that reversed the red and black
jumper cable handles. Where's the binary quality control? ~Stephen

-----Original Message-----
From: [] On
Behalf Of Santos Ramirez
Sent: Friday, November 03, 2006 12:59 PM
Subject: Re: [tap-l] Magnetizing Old Bar Magnets

The magnetizer we bought from Sgt Welch many years ago was reversed.
We relabeled it and went on.

> A few years ago we obtained a magnetizer from ETP (Elector-Technic
> Products), but the polarity was reversed. When I called them, they
> me that they set it up so that the "North" pole on the magnets they
> created was the same as the "North" pole of the earth. Further, when
> explained the issue to them, they said that they had no intention of
> changing. Of course, we corrected the wiring in the magnetizers. Has
> anyone else had experience with these guys?
> Dick
> Dr. Richard E. Berg, Professor of the Practice
> Director, Physics Lecture-Demonstration Facility
> U.S. mail address:
> Department of Physics
> University of Maryland
> College Park, MD 20742-4111
> Phone: (301) 405-5994
> FAX: (301) 314-9525
> e-mail