Imatge:Sunspot butterfly with graph.jpg

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Sunspot_butterfly_with_graph.jpg (98KB, tipus MIME: image/jpeg)

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Butterfly diagram showing paired pattern of sunspots. Graph shows sunspot numbers.

  • Spörer's law noted that at the start of an 11-year sunspot cycle, the spots appeared first at higher latitudes and later in progressively lower latitudes.
  • The Babcock Model explains the behavior described by Spörer's law, as well as other effects, as being due to magnetic fields which are twisted by the Sun's rotation.

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Source: http://science.msfc.nasa.gov/ssl/pad/solar/images/bfly.gif

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