Naked-Eye Sunspots

  • J.M. Vaquero
Part of the Astrophysics and Space Science Library book series (ASSL, volume 361)

Humans have been looking at the Sun for millennia. Nevertheless, on most occasions one only manages to be dazzled. But there are some situations in which the intensity of the light of the Sun diminishes and we can observe the solar disk with the naked eye. Some examples are the Sun observed through fog or during a dust-storm, or even the Sun observed through the smoke during a forest fire. On these occasions, we can see the solar disk without being dazzled. If there was a sunspot of great size just at that moment, then we might distinguish it inside the solar disk (see Figure 2.1).


Solar Activity Solar Cycle Sunspot Number Solar Disk Solar Eclipse 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Springer-Verlag New York 2009

Authors and Affiliations

  • J.M. Vaquero
    • 1
  1. 1.Depto. FisicaUniversidad Extremadura Fac. CienciasSpain

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