Untrodden Ground in Astronomy And Geology Giving Further Details of the Second
Untrodden Ground in Astronomy And Geology Giving Further Details of the Second
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These two arcs, being referred to the equator of daily rotation, will be increased as follows : Z Z' = 40-9" Q Z =29 25' 47" 409" Again, if Z Z' = 21-149" ^ Q = Cos. Of 29 25' 47" = ^ 2 An arc of the equator of 46;9" converted into time, as indicated by the daily rotation equals 3'ls. ; an arc of the equator of 24*2" converted into time equals l*6s. Hence the daily rotation required to readjust, as it were, the effects of the second rotation for a meridian of six hours right ascension amounts t...o 3'ls. Annually, whilst the daily rotation required to readjust the effects of the second rotation for a meridian of eighteen hours right ascension amounts to l'6s. Annually. Hence there is a difference of 3'ls. L'6s. = l'5s. In the apparent effect of the daily rotation during a year between the meridians of six hours and eighteen hours right ascension, as regards a latitude of 29 25' 47" north.
It follows that the earth would have to perform T5s. More of its daily rotation to bring a star with six hours right ascension on the meridian, than it would have to perform to bring a star on the meridian which had eighteen hours right ascension, these stars in each case having a north decimation of 29 25' 47".
What to read after Untrodden Ground in Astronomy And Geology Giving Further Details of the Second?
You can find similar books in the "Read Also" column, or choose other free books by Alfred Wilks Drayson to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
These two arcs, being referred to the equator of daily rotation, will be increased as follows : Z Z' = 40-9" Q Z =29 25' 47" 409" Again, if Z Z' = 21-149" ^ Q = Cos. Of 29 25' 47" = ^ 2 An arc of the equator of 46;9" converted into time, as indicated by the daily rotation equals 3'ls. ; an arc of the equator of 24*2" converted into time equals l*6s. Hence the daily rotation required to readjust, as it were, the effects of the second rotation for a meridian of six hours right ascension amounts t...o 3'ls. Annually, whilst the daily rotation required to readjust the effects of the second rotation for a meridian of eighteen hours right ascension amounts to l'6s. Annually. Hence there is a difference of 3'ls. L'6s. = l'5s. In the apparent effect of the daily rotation during a year between the meridians of six hours and eighteen hours right ascension, as regards a latitude of 29 25' 47" north.
It follows that the earth would have to perform T5s. More of its daily rotation to bring a star with six hours right ascension on the meridian, than it would have to perform to bring a star on the meridian which had eighteen hours right ascension, these stars in each case having a north decimation of 29 25' 47".
What to read after Untrodden Ground in Astronomy And Geology Giving Further Details of the Second?
You can find similar books in the "Read Also" column, or choose other free books by Alfred Wilks Drayson to read onlineMoreLess
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