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Книги Книги 1 - 10 з 19 у Motion of the Pole of the Heavens around the Pole of the Ecliptic. — The obliquity....
" Motion of the Pole of the Heavens around the Pole of the Ecliptic. — The obliquity of the ecliptic, which equals the angular distance of the pole of the heavens from the pole of the ecliptic, is not sensibly affected by precession. "
The Elements of Astronomy: A Textbook - Сторінка 75
автори: Charles Augustus Young - 1897 - 464 стор.
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On the Cause, Date, and Duration of the Last Glacial Epoch of Geology, and ...

Alfred Wilks Drayson - 1873 - 288 стор.
...To the geometrician they are flat contradictions the one of the other. It is a geometrical law that the angular distance of the pole of the heavens from the pole of the ecliptic is the exact measure of the obliquity of the ecliptic. If, then, the pole of the ecliptic be the centre...
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On the Cause, Date, and Duration of the Last Glacial Epoch of Geology, and ...

Alfred Wilks Drayson - 1873 - 288 стор.
...23° 25' 47", V the position of the pole of the heavens at any date in the past. Required to find EP, the angular distance of the pole of the heavens from the pole of the ecliptic ; that is, the obliquity. Take the polar movement in arc=20"'05 annually. For 1871. Years elapsed from...
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On the Cause, Date, and Duration of the Last Glacial Epoch of Geology, and ...

Alfred Wilks Drayson - 1873 - 288 стор.
...25' 47", P' the position of the pole of the heavens at any date in the past. Required to find E P', the angular distance of the pole of the heavens from the pole of the ecliptic ; that is, the obliquity. PROOF OF THE POLAR CURVE. 135 Take the polar movement in arc=20"'05 annually....
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On the Cause, Date, and Duration of the Last Glacial Epoch of Geology, and ...

Alfred Wilks Drayson - 1873 - 288 стор.
...angle which it makes with the ecliptic ; and the axis cannot alter this angle without altering the distance of the pole of the heavens from the pole of the ecliptic. Thus, for example, we might turn this book upside down, and thus alter the angle which the plane of...
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The cause of the supposed proper motion of the fixed stars, and an ...

1874
...tracing a portion of a circle the centre of which was 6° from the pole of the ecliptic. The decrease in the angular distance of the pole of the heavens from the pole of the ecliptic amounts to only about 0"-45 per annum; so that if an error were made of two years in the value of the...
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Journal of Science, and Annals of Astronomy, Biology, Geology ..., Том 12

1875
...per annum. Now the fact is, that any variation in the obliquity is the same thing as a variation in the angular distance of the pole of the heavens from the pole of the ecliptic, and of the circumference of the circle from its supposed centre, consequently that the pole of the...
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The Journal of Science, and Annals of Astronomy, Biology, Geology ..., Том 12

James Samuelson, William Crookes - 1875
...per annum. Now the fact is, that any variation in the obliquity is the same thing as a variation in the angular distance of the pole of the heavens from the pole of the ecliptic, and of the circumference of the circle from its supposed centre, consequently that the pole of the...
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The Heavens Above: A Popular Handbook of Astronomy

Joseph Anthony Gillet - 1882 - 405 стор.
...Effects of Precession. — One effect of precession, as has already been stated, is the revolution of the pole of the heavens around the pole of the ecliptic in a period of about twenty-six thousand years. The circle described by the pole of the heavens, and...
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Science, Том 22

1893
...years) x40.9"=the angle ECP at date given, we can calculate the value of the side PE, which is the distance of the Pole of the Heavens from the Pole of the Ecliptic, and is consequently the measure of the obliquity, and of the Arctic Circles, and Tropics on Earth at...
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A Text-book of General Astronomy: For Colleges and Scientific Schools

Charles Augustus Young - 1888 - 551 стор.
...declination of the stars are constantly changing. PRECESSION. 138 206. Motion of the Pole of Equator around the Pole of the Ecliptic. — The obliquity of the ecliptic, which equals the distance in the sky between the pole of the equator and the pole of the ecliptic (Art. 178), has remained...
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