The book of stars; being a simple explanation of the stars and their uses to boy life, written to conform to the tests of the Boy scouts (1915)
Collins, A. Frederick (Archie Frederick), 1869- · New York, D. Appleton and company · leaf 53
the Sun, which will be explained in Chapter VII, and so shutsout the intense light of the other two layers. A cross sectionof the Sun is shown in Fig. 33. Sun Spots and Their Effect on the Earth.—Very oftengreat spots are seen on the Suns surface. These purplish blackspots appear to be holes, like… … FIRST LAYER;THEPHOTOSPHERE SECOND LAYER;THE CHROMOSPHERE, THIRD LAYER;k THE CORONA Fig. 33.—Cross Section of the Sun. black speck about the size of a pinhead. Fig. 34 shows a viewof a sun spot made through a large telescope. Whenever the sun changes his spots magnetic storms takeplace on the Earth,…
Astronomy · Stars
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