The Geography of the Heavens and Class-book of Astronomy: Accompanied by a Celestial Atlas |
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Page 7
... Nights , 287 66 XV . The Harvest Moon , and Horizontal Moon , 293 " XVI . Refraction and Twilight , · 297 " XVII . Aurora Borealis and Parallax , · 802 " XVIII . Practical Astronomy - Reflection and Refraction of Light , " XIX ...
... Nights , 287 66 XV . The Harvest Moon , and Horizontal Moon , 293 " XVI . Refraction and Twilight , · 297 " XVII . Aurora Borealis and Parallax , · 802 " XVIII . Practical Astronomy - Reflection and Refraction of Light , " XIX ...
Page 17
... night throughout the year , while the other stars are continually moving . Many of the stars also in that region of the skies never set , so that when the sky is clear , they may be seen at any hour of the night . They revolve about the ...
... night throughout the year , while the other stars are continually moving . Many of the stars also in that region of the skies never set , so that when the sky is clear , they may be seen at any hour of the night . They revolve about the ...
Page 23
... night , and may be traced out at almost any season of the year . Its mean declination is 609 N. and its right ascension 12 ° . It is on our meridian the 22d of November , but does not sensibly change its position for several days ; for ...
... night , and may be traced out at almost any season of the year . Its mean declination is 609 N. and its right ascension 12 ° . It is on our meridian the 22d of November , but does not sensibly change its position for several days ; for ...
Page 26
... night , when the sky is clear , for to us it never sets . By reference to the lines on the map , which all meet in the pole , it will be evident that a star , near the pole , moves over a much less space in one hour , than one at the ...
... night , when the sky is clear , for to us it never sets . By reference to the lines on the map , which all meet in the pole , it will be evident that a star , near the pole , moves over a much less space in one hour , than one at the ...
Page 29
... night , when it would have performed one complete revolution in the heavens . The water falling down into the receiver they divided into twelve equal parts ; and having twelve other small vessels in readiness , each of them capable of ...
... night , when it would have performed one complete revolution in the heavens . The water falling down into the receiver they divided into twelve equal parts ; and having twelve other small vessels in readiness , each of them capable of ...
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Common terms and phrases
3d magnitude 4th magnitude angle aphelion appear Arcturus Aries astronomers Auriga axis Beta blue bright star called Cassiopeia celestial Cepheus circle cluster comet constellation Cor Caroli declination degree Delta Denebola diameter distant companion DOUBLE STAR Earth Earth's orbit east ecliptic equator equinoctial figure fixed stars Gamma head heavens hemisphere Herschel horizon Jupiter latitude light longitude luminous Map VIII mean distance Mercury meridian miles minutes Moon Moon's motion naked eye nearly NEBULA node north pole northern Number of stars o'clock observed Orion pale yellow parallax pass perihelion period planet Pleiades polar position principal star Refracting telescopes refraction remarkable represented revolution revolve right ascension rising satellites Saturn seen shadow sidereal Sirius situated small stars solstice southern Sun's supposed surface Taurus TELESCOPIC OBJECTS TELESCOPIC OBJECTS.-Alpha tides tion triangle TRIPLE STAR Ursa Ursa Major Venus vernal equinox visible Zeta Zodiac