A Study of the SkyC. Scribner, 1902 - 340 من الصفحات |
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الصفحة 40
... Polaris 4udd Nov. 1 . Dec. 1 . www Jan. 1 . Feb. 1 . The Great Dipper . FIG . 9. - THE GREAT DIPPER . which may be made of these celestial objects , prior to the detailed discussion of them which will come later . Our present business ...
... Polaris 4udd Nov. 1 . Dec. 1 . www Jan. 1 . Feb. 1 . The Great Dipper . FIG . 9. - THE GREAT DIPPER . which may be made of these celestial objects , prior to the detailed discussion of them which will come later . Our present business ...
الصفحة 41
... Polaris , the pole - star . Two of the stars in the bowl are called the Pointers , because they point toward Polaris . The distance between the Pointers is about five degrees , and should be fixed in mind as a sort of yardstick with ...
... Polaris , the pole - star . Two of the stars in the bowl are called the Pointers , because they point toward Polaris . The distance between the Pointers is about five degrees , and should be fixed in mind as a sort of yardstick with ...
الصفحة 42
... Polaris and one of the Pointers , with the most perfect instrument ever devised for such work , and another astronomer in San Francisco were to make a similar measurement , the two results would agree if the observations were free from ...
... Polaris and one of the Pointers , with the most perfect instrument ever devised for such work , and another astronomer in San Francisco were to make a similar measurement , the two results would agree if the observations were free from ...
الصفحة 43
... Polaris , at a point called the north celestial pole . The south end strikes at the opposite point of the celestial sphere , called the south celestial pole . A straight line joining these two points is the axis of the celestial sphere ...
... Polaris , at a point called the north celestial pole . The south end strikes at the opposite point of the celestial sphere , called the south celestial pole . A straight line joining these two points is the axis of the celestial sphere ...
الصفحة 44
... Polaris . The star which is situated at the bend of the handle of the Great Dipper is called Mizar . Let the eye travel slowly from Polaris directly toward Mizar ; when it has gone a distance equal to one fourth of the distance between ...
... Polaris . The star which is situated at the bend of the handle of the Great Dipper is called Mizar . Let the eye travel slowly from Polaris directly toward Mizar ; when it has gone a distance equal to one fourth of the distance between ...
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عبارات ومصطلحات مألوفة
Andromeda appear Arcturus astronomer atmosphere axis beautiful Betelgeuse bodies Boötes bright brighter brightest called Cassiopeia cause celestial sphere changes chromosphere circle clock clouds cluster color comet composed constellation corona crater dark diameter Dipper disc distance double star earth eclipse equator faint stars fixed stars glass glowing half Harvard College Observatory heat heavens Hercules horizon inferior conjunction instrument Jupiter lens lies light line from Polaris look lunar Lyræ Mars masses measure meridian meridian circle meteorite meteors miles Milky minute Mizar moon moon's motion move Mythology naked eye nearly nebula night observations observatory opera-glass Ophiuchus orbit Orion passes photosphere planet Pleiades Polaris portion prolonged Queries revolution revolve right ascension ring rotation Saturn seen shadow shining shower Sirius small telescope solar spectra spectroscope spectrum spider-web spot sun-spots sun's sunlight surface tail tains theory tion turned Uranus Venus visible