A History of Astronomy
A History of Astronomy
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In our eReader you can find the full English version of the book. Read A History of Astronomy 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 A History of Astronomy
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Ultimately, however, it was pointed out by C. H. F. Peters in 1855 that a careful series of observations made at Naples ten years before showed unmistakably that spots were not fixed, and consequendy could not be expected to agree in giving an exact value of the rotation period. At this time Carrington, who had been building himself an observatory at Redhill with the intention of providing from his own observations a catalogue of circumpolar stars, took up also the daily observation and measure...ment of position of sun-spots (which had been recommended by Sir John Herschel), so that his days as well as his nights might find him astronomical employment He made the important discovery, hinted at more than two centuries before by Scheiner, that the period of the sun's surface rotation increases!
from rather less than 25 days at the solar equator to about 27 J days for spots at the highest latitude at which they occurred (about 50**). He represented the variable rotation by an empirical formula without any attempt to explain the cause.
What to read after A History of Astronomy?
You can find similar books in the "Read Also" column, or choose other free books by Walter W Walter William Bryant to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Ultimately, however, it was pointed out by C. H. F. Peters in 1855 that a careful series of observations made at Naples ten years before showed unmistakably that spots were not fixed, and consequendy could not be expected to agree in giving an exact value of the rotation period. At this time Carrington, who had been building himself an observatory at Redhill with the intention of providing from his own observations a catalogue of circumpolar stars, took up also the daily observation and measure...ment of position of sun-spots (which had been recommended by Sir John Herschel), so that his days as well as his nights might find him astronomical employment He made the important discovery, hinted at more than two centuries before by Scheiner, that the period of the sun's surface rotation increases!
from rather less than 25 days at the solar equator to about 27 J days for spots at the highest latitude at which they occurred (about 50**). He represented the variable rotation by an empirical formula without any attempt to explain the cause.
What to read after A History of Astronomy?
You can find similar books in the "Read Also" column, or choose other free books by Walter W Walter William Bryant to read onlineMoreLess
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