The Geography of the Heavens, and Class Book of Astronomy: Accompanied by a Celestial Atlas |
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Page 179
... diameter . Here let the student refer to Plate I. where the Relative Magnitudes of the Sun and Planets are exhibited . Let him compare the segment of the Sun's circumference , as there represented , with the entire circumference of the ...
... diameter . Here let the student refer to Plate I. where the Relative Magnitudes of the Sun and Planets are exhibited . Let him compare the segment of the Sun's circumference , as there represented , with the entire circumference of the ...
Page 180
... diameter ( containing there- fore nearly 220,000 square miles ) is the least space which can be distinctly dis- cerned on the Sun as a visible area , even by the most powerful glasses . Spots have been observed , however , whose linear ...
... diameter ( containing there- fore nearly 220,000 square miles ) is the least space which can be distinctly dis- cerned on the Sun as a visible area , even by the most powerful glasses . Spots have been observed , however , whose linear ...
Page 183
... diameters : thus , the diameter of Mercury being 2984 miles , and that of the earth 7924 ; their bulks are as the cube of 2984 , to the cube of 7924 , or as 1 to 181 , nearly . It revolves on its axis from west to east in 24 hours , 5 ...
... diameters : thus , the diameter of Mercury being 2984 miles , and that of the earth 7924 ; their bulks are as the cube of 2984 , to the cube of 7924 , or as 1 to 181 , nearly . It revolves on its axis from west to east in 24 hours , 5 ...
Page 188
... diameter of Venus is 7621 miles ; but her ap- parent diameter and brightness are constantly varying , ac- cording to her distance from the Earth . When Venus and the Earth are on the same side of the Sun , her distance In what direction ...
... diameter of Venus is 7621 miles ; but her ap- parent diameter and brightness are constantly varying , ac- cording to her distance from the Earth . When Venus and the Earth are on the same side of the Sun , her distance In what direction ...
Page 189
... diameter , is 61.2 ; when most remote , it is only 9 " .6 now 612 ÷ 9 ′′ .6 = 6 } , hence when nearest the Earth her apparent diameter is 63 times greater than when most distant , and surface of her disc ( C ) , or nearly 41 times ...
... diameter , is 61.2 ; when most remote , it is only 9 " .6 now 612 ÷ 9 ′′ .6 = 6 } , hence when nearest the Earth her apparent diameter is 63 times greater than when most distant , and surface of her disc ( C ) , or nearly 41 times ...
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Common terms and phrases
3d magnitude 4th magnitude ancient angle appear Arcturus Argo Navis Aries astronomers Auriga axis Beta brightest called Cassiopeia celestial centre Cepheus circle cluster colure comet constellation Cor Caroli declination degree Delta Denebola diameter direction distinguished diurnal motion Earth east ecliptic equal equator equinoctial figure fixed stars Gamma globe head heavenly bodies heavens Hercules Herschel horizon Jupiter latitude length Libra light longitude Mars mean distance Mercury meridian millions of miles minutes Moon Moon's motion naked eye nearest nearly nebulæ night node north pole northern hemisphere observed orbit Orion parallax passing perihelion period Perseus phenomena planets Pleiades polar star principal star represented revolution revolve right ascension rise satellites Saturn seasons seen side sidereal Sirius situated small stars solar system solstice southern spots square Sun's supposed surface Taurus telescope tion triangle Ursa Venus vernal equinox Virgo visible whole number Zeta Zodiac
Popular passages
Page 158 - And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: he made the stars also. And God set them in the firmament of the heaven to give light upon the earth, and to rule over the day, and over the night, and to divide the light from the darkness: and God saw that it was good. And the evening and the morning were the fourth day.
Page 152 - Canst thou bind the sweet influences of the Pleiades, Or loose the bands of Orion? Canst thou bring forth Mazzaroth in his season? Or canst thou guide Arcturus with his sons?
Page 27 - Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricornus, Aquarius, Pisces; the whole occupying a complete circle, or broad belt, in the heavens, called the Zodiac.
Page 100 - Cleaves to his back; a famish'd face he bears; His arms descend, his shoulders sink away, To multiply his legs for chase of prey. He grows a wolf, his hoariness remains, And the same rage in other members reigns.
Page 112 - Dan shall be a serpent by the way, An adder in the path, That biteth the horse heels, So that his rider shall fall backward.
Page 165 - It is worthy of particular notice, that the point from which the meteors seemed to emanate was observed, by those who fixed its position among the stars, to be in the constellation Leo; and, according to their concurrent testimony, this radiant point was stationary among • the stars during the whole period of observation — that is, it did not move along with the earth in its diurnal revolution east...
Page 162 - I was called up to see the shooting of the stars, as it is commonly called. The phenomenon was grand and awful ; the whole heavens appeared as if illuminated with sky-rockets, which disappeared only by the light of the sun after day-break. The meteors, which at any one instant of time appeared as numerous as the stars, flew in all possible directions, except from the earth...
Page 163 - The first appearance was that of fireworks of the most imposing grandeur, covering the entire vault of heaven with myriads of fireballs, resembling skyrockets.
Page 127 - So high in air, and set her on the clift, Where far above thy world she dwells alone, And proudly makes the strength of rocks her own ; Thence wide o'er Nature takes her dread survey, And with a glance predestinates her prey ? She feasts her young with blood ; and, hovering o'er Th' unslaughter'd host, enjoys the promis'd gore.
Page 163 - ... and the stars of heaven fell unto the earth, even as a fig tree casteth her untimely figs, when she is shaken of a mighty wind.