Universe: Stars And Galaxies
Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 16, Problem 44Q
To determine

(a)

The ratio of the energy flux from a patch of a penumbra of the sunspot to the energy flux from an equally large patch of the undisturbed photosphere.

To determine

(b)

The ratio of the energy flux from a patch of a penumbra of the sunspot to the energy flux from an equally large patch of the umbra.

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