Elements of Natural Philosophy
Elements of Natural Philosophy
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In our eReader you can find the full English version of the book. Read Elements of Natural Philosophy 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 Elements of Natural Philosophy
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To quickly assess the difficulty of the text, read a short excerpt:
" a. C. 6, 8118875 = - 36% 97 . . " . . T, 5679451 No* . . Oo 36, 97 Kq. (247), L = 4 h 56 m 28' - 36, 97 = 4 h 55" 5r, o3 212 SPHERICAL ASTRONOMY.
729. It frequently happens that the moon cannot be observed on the middle wire, in which case she is far enough from the meridian to have a sensible parallax in right ascension ; and as it may be very desirable not to lose the observation, this parallax must be computed and applied to the apparent hour angle from the middle wire, which is supposed t...o be nearly coincident with the meridian.
Denoting the hour angle by A, the parallax in hour angle by A A, th, -. Geocentric latitude by /, the moon's declination by Z>, and her horizontal parallax by P, then, Appendix XI, p. 379, A h p . Cos / . Sin P . Sin h . Sec D ; and^to make this applicable to the case before us, A will denote the equa- torial interval, in sidereal time, from the lateral to the central wire. This angle being small, its arc, expressed in seconds of time, may be taken for its sine, in which case, A A will be in time-seconds, and the true distance of the moon's limb from the central wire, denoted by A /?
What to read after Elements of Natural Philosophy?
You can find similar books in the "Read Also" column, or choose other free books by William Holmes Chambers Bartlett to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
" a. C. 6, 8118875 = - 36% 97 . . " . . T, 5679451 No* . . Oo 36, 97 Kq. (247), L = 4 h 56 m 28' - 36, 97 = 4 h 55" 5r, o3 212 SPHERICAL ASTRONOMY.
729. It frequently happens that the moon cannot be observed on the middle wire, in which case she is far enough from the meridian to have a sensible parallax in right ascension ; and as it may be very desirable not to lose the observation, this parallax must be computed and applied to the apparent hour angle from the middle wire, which is supposed t...o be nearly coincident with the meridian.
Denoting the hour angle by A, the parallax in hour angle by A A, th, -. Geocentric latitude by /, the moon's declination by Z>, and her horizontal parallax by P, then, Appendix XI, p. 379, A h p . Cos / . Sin P . Sin h . Sec D ; and^to make this applicable to the case before us, A will denote the equa- torial interval, in sidereal time, from the lateral to the central wire. This angle being small, its arc, expressed in seconds of time, may be taken for its sine, in which case, A A will be in time-seconds, and the true distance of the moon's limb from the central wire, denoted by A /?
What to read after Elements of Natural Philosophy?
You can find similar books in the "Read Also" column, or choose other free books by William Holmes Chambers Bartlett to read onlineMoreLess
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