Astronomy the Science of the Heavenly Bodies
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In our eReader you can find the full English version of the book. Read Astronomy the Science of the Heavenly Bodies Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Astronomy the Science of the Heavenly Bodies
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The brighter streaks and mottlings known as f aculse are probably elevations above the general photosphere, and seem to be crusts of luminous matter, often in- candescent calcium, protruding through from the lower levels. Generally the faculae are numerous around the dark spots, and absorption of the sun's light by his own atmosphere affords a darker back- ground for them, with better visibility nearer the rim of the solar disk. The spectroheliograph re- veals vast zones of faculse otherwise in...visible, related to the sun-spot zones proper on both sides of the equator.
In some intimate way the magnetism of sun and earth are so related that outbreaks of solar spots are accompanied with disturbances of electrical and other instruments on the earth; also the aurora borealis is seen with greater frequency during periods when many spots are visible.
SUN SPOTS AND PROMINENCES 177 Within very recent years the discovery of a mag- netic field in sun spots has been made by Hale with powerful instruments of his own design.
What to read after Astronomy the Science of the Heavenly Bodies?
You can find similar books in the "Read Also" column, or choose other free books by David P David Peck Todd to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The brighter streaks and mottlings known as f aculse are probably elevations above the general photosphere, and seem to be crusts of luminous matter, often in- candescent calcium, protruding through from the lower levels. Generally the faculae are numerous around the dark spots, and absorption of the sun's light by his own atmosphere affords a darker back- ground for them, with better visibility nearer the rim of the solar disk. The spectroheliograph re- veals vast zones of faculse otherwise in...visible, related to the sun-spot zones proper on both sides of the equator.
In some intimate way the magnetism of sun and earth are so related that outbreaks of solar spots are accompanied with disturbances of electrical and other instruments on the earth; also the aurora borealis is seen with greater frequency during periods when many spots are visible.
SUN SPOTS AND PROMINENCES 177 Within very recent years the discovery of a mag- netic field in sun spots has been made by Hale with powerful instruments of his own design.
What to read after Astronomy the Science of the Heavenly Bodies?
You can find similar books in the "Read Also" column, or choose other free books by David P David Peck Todd to read onlineMoreLess
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