The Geography of the Heavens and Class-book of Astronomy: Accompanied by a Celestial Atlas |
From inside the book
Results 1-5 of 56
Page 10
... Horizon is an imaginary great circle , whose plane , passing through the centre of the Earth , divides the hea- vens into two hemispheres , of which the upper one is called the 5. What helps to facilitate the study of the heavens ...
... Horizon is an imaginary great circle , whose plane , passing through the centre of the Earth , divides the hea- vens into two hemispheres , of which the upper one is called the 5. What helps to facilitate the study of the heavens ...
Page 11
... horizon will be less than two miles and three quarters ; if the eye be elevated six feet , it will be just three miles . The observer being always in the centre of the sensible horizon , it will move as he moves , and enlarge or ...
... horizon will be less than two miles and three quarters ; if the eye be elevated six feet , it will be just three miles . The observer being always in the centre of the sensible horizon , it will move as he moves , and enlarge or ...
Page 14
... horizon , and are seen no more , until , having passed through the lower hemisphere , they again reappear in the east . DESCRIPTION AND USE OF THE MAPS . 20. THE first map of the atlas represents , upon a large scale , a general view of ...
... horizon , and are seen no more , until , having passed through the lower hemisphere , they again reappear in the east . DESCRIPTION AND USE OF THE MAPS . 20. THE first map of the atlas represents , upon a large scale , a general view of ...
Page 17
... horizon . On this account they are said to be within the circle of perpetual apparition . On the other hand , the identity of the North Polar Star , strange as it may appear , is not so easily determined by those who are just entering ...
... horizon . On this account they are said to be within the circle of perpetual apparition . On the other hand , the identity of the North Polar Star , strange as it may appear , is not so easily determined by those who are just entering ...
Page 26
... horizon , directly N. of us . The true pole of the heavens is always elevated just as many degrees above our horizon , as we are north of the Equator . If we live in 42 ° N. latitude , the N. pole will be 42 ° above our horizon . ( See ...
... horizon , directly N. of us . The true pole of the heavens is always elevated just as many degrees above our horizon , as we are north of the Equator . If we live in 42 ° N. latitude , the N. pole will be 42 ° above our horizon . ( See ...
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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 celestial Cepheus circle cluster comet constellation Cor Caroli declination degree Delta Denebola diameter distant companion diurnal motion DOUBLE STAR Earth Earth's orbit east ecliptic equator equinoctial figure fixed stars Gamma head heavens hemisphere Herschel horizon Jupiter latitude Libra 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 tides tion triangle TRIPLE STAR Ursa Ursa Major Venus vernal equinox visible Zeta Zodiac