Page:Popular Science Monthly Volume 92.djvu/898

 The Sun's Glorious Corona in Total Eclipse

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��When the Moon Masks the Sun's Face

��Only during the fleeting minutes of a total eclipse may the Sun's weirdly beautiful Corona be seen. It is a pearly white glow, like a halo, which extends in an irregular outline millions of miles into space. Photographs will be made of the Corona, as usual. to determine its uize and outline, which variea a

��great deal from one eclipse to another and appears to be related to the frequency of the sunspots. It is hoju'd also to obtain good cinematograph pic- tures of the total solar eclipse on June 8, lQ18,and many problems hitherto not accurately determined are cxiK'cted to receive clarification at this time.

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