Sunspots in Action

Sunspots in Action

Sunspots in Action

Sunspots in Action

Excerpt

Sunspots and accompanying solar radiations have become so important a factor in radio communication that an up-to-date summary of the effect of sunspots upon the earth and its atmosphere from this viewpoint appears in order. A decade has passed since the publication of Sunspots and Their Effects, and more than a decade since the appearance of Earth, Radio, and the Stars. We are now approaching another sunspot maximum. So much has happened in the last ten years with the rapid progress of science that a new book on the subject appears preferable to any revision of an earlier volume.

The aim of this book is to bring together relevant information crossing several fields of science that bear upon the relation of the earth to its cosmic environment. The book has been written for the intelligent layman who would keep informed with the advance of science, and particularly for those interested in the fundamental relations of the sun to the earth. Considerable emphasis has been placed upon the effect of the sun on the earth's atmosphere both as a medium for long-distance radio communication and as the ultimate source of weather.

Many recent books cover the fields of electronics and radio communications, but for the most part such volumes as have appeared devote scarcely more than a chapter to the propagation of radio waves through the atmosphere, with a casual mention of such relations as have been found to exist between sunspots and the electrical ionization of the upper air.

Since the book has been written primarily for the layman, technical language has been reduced to a mimimum with the hope of thereby presenting a clearer and broader picture, even . . .

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