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Last Post 10/17/2011 8:37 AM by  Terry Kucera
Strength of magnetic field
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Anonymous





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10/16/2011 8:45 PM

    What is the strength of a magnetic field in a sunspot?

    John E.

    Terry Kucera



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    10/17/2011 8:37 AM
    Hi John.

    A sunspot at the photosphere can have a magnetic field of a few 1000 Gauss
    (see http://www.windows2univer...magnetic_field.html) .

    For comparison, average magnetic field at the Earth's surface is around 0.5 Gauss. For refrigerator magnets I am finding values in the range 50 - 150 Gauss.

    cheers,

    Terry

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