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# RE: [femm] Re: FEMM simulations errors ??

- To: femm@yahoogroups.com
- Subject: RE: [femm] Re: FEMM simulations errors ??
- From: Mario Acuna <u2mha@erols.com>
- Date: Wed, 13 Jun 2001 21:13:59 -0400
- In-reply-to: <EBENLMACNJNEFNGMLGJECEBICBAA.adrianw@solid-state-logic.com >
- References: <9g63qg+lvf8@eGroups.com>

Hello Adrian:
The "pole"is defined as the direction to which a compass (North or South) points. By convention the direction of the magnetic field line is such that it emanates from the south geographic pole and enters into the north geographic pole. This can be derived from geomagnetic maps showing the "dip" angle of the field.
Cheers!
Mario
--------
At 10:41 AM 6/13/2001 +0100, you wrote:

> Hi,
> Just curious, but is a North pole the same field as emanates from the Earth s North pole, or the field that comes from a compass North pointing end?
> Thanks
> Adrian
> -----Original Message-----
> On Behalf Of David Meeker
> Sent: 12 June 2001 23:07
> To: femm@yahoogroups.com
> Subject: [femm] Re: FEMM simulations errors ??
> `The way to see this is to think of each magnet as being composed of 2`
> `point poles of strength Q. For a N pole, the force on the pole is`
> `B*Q, where B is the flux density created by the stator permanent`
> `magnets. For a S pole, the force is -B*Q. When you look at it this`
> `way, you can see that the vertical force should be zero, and there`
> `should be a net horizontal force to the right. One reference for this`
> `trick is M. Lindeburg's "Engineer in Training Review Manual, 6th ed.,"`
> `1982.`
> `Dave Meeker`
> `--`
> `http://members.aol.com/_ht_a/dcm3c`
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Dr. Mario H. Acuna
u2mha@erols.com

- References:
  - Re: FEMM simulations errors ??
    - From: "David Meeker" <dcm3c@aol.com>

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