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# Re: [femm] far B field

- To: <femm@yahoogroups.com>
- Subject: Re: [femm] far B field
- From: "Robert Macy" <macy@california.com>
- Date: Thu, 21 Nov 2002 06:35:56 -0800
- Organization: AJM Electronics
- References: <ari95n+9jpr@eGroups.com>
- Reply-to: "Robert Macy" <macy@california.com>

    Marco,

    My experience is that once you're over 3 times the dimension of the magnet
    away you pretty much have a dipole, which can be handy. Approximation is
    within 1-2%

    - Robert -

    ----- Original Message -----
    From: mvalca
    To: femm@yahoogroups.com
    Sent: Thursday, November 21, 2002 1:31 AM
    Subject: [femm] far B field

    Hello,
    how can one say about the far B field, for example the field far from
    a loudspeaker? Is it dipole-like? Is there a theory for this?

    thank you

    Marco

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- References:
  - far B field
    - From: "mvalca" <mvalca@yahoo.com>

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