Astronomical and geographical essaysW. & S. Jones, 1812 - 518 páginas |
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Página xiv
... Circles of the Sphere in the Heavens 19. To find the Circle of perpetual Apparition ..... the Sun's Amplitude ..... 20 . 21 . 22 . 23 . 24 . 25 . 26 . the Sun's Altitude at a given Hour ibid . 338 • ibid . .... 341 346 ibid . • 347 when ...
... Circles of the Sphere in the Heavens 19. To find the Circle of perpetual Apparition ..... the Sun's Amplitude ..... 20 . 21 . 22 . 23 . 24 . 25 . 26 . the Sun's Altitude at a given Hour ibid . 338 • ibid . .... 341 346 ibid . • 347 when ...
Página 8
... circle of a whitish hue , in some places it is double , but for the most part con- sists of a single path surrounding the whole celestial The great Galileo discovered by the tele- scope , that the portion of the heavens which this circle ...
... circle of a whitish hue , in some places it is double , but for the most part con- sists of a single path surrounding the whole celestial The great Galileo discovered by the tele- scope , that the portion of the heavens which this circle ...
Página 30
... circle . It is thus with the Sun ; it appears to us like a bright flat circle , which flat circle is termed the sun's disc . By the assistance of telescopes , dark spots have been observed on this disc , and found to have a motion from ...
... circle . It is thus with the Sun ; it appears to us like a bright flat circle , which flat circle is termed the sun's disc . By the assistance of telescopes , dark spots have been observed on this disc , and found to have a motion from ...
Página 68
... circle in the concave sphere of the heavens . Among these circles , the horizon is the most fre quently named . Properly speaking , there are two circles by this name , but distinguished from each other by added epithets ; the one being ...
... circle in the concave sphere of the heavens . Among these circles , the horizon is the most fre quently named . Properly speaking , there are two circles by this name , but distinguished from each other by added epithets ; the one being ...
Página 69
... circle upon the sphere of the heaven , by the angle eFo , or the arc eo ; this arc , in so small a circle , zhno , would amount to several degrees , and consequently the difference between the sensible and rational horizon would be ...
... circle upon the sphere of the heaven , by the angle eFo , or the arc eo ; this arc , in so small a circle , zhno , would amount to several degrees , and consequently the difference between the sensible and rational horizon would be ...
Índice
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341 | |
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427 | |
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464 | |
517 | |
Otras ediciones - Ver todo
ASTRONOMICAL & GEOGRAPHICAL ES George 1750-1795 Adams,William 1763-1831 Jones No hay ninguna vista previa disponible - 2016 |
ASTRONOMICAL & GEOGRAPHICAL ES George 1750-1795 Adams,William 1763-1831 Jones No hay ninguna vista previa disponible - 2016 |
Términos y frases comunes
angle apparent motion Aries astronomers azimuth body bright bring broad paper circle called Capricorn celestial globe centre comet conjunction dark dial diameter disc distance diurnal motion earth ecliptic edge elevated enlightened equal equator equinoctial equinox fixed stars Georgium Sidus given place greatest elongation heavens hemisphere Herschel horary index hour circle hour-lines illuminated inferior planets inhabitants Jupiter latitude light London longest day longitude magnitude Mars Mercury miles minutes month moon moon's nearer night nodes noon north pole number of degrees observed opposite parallax parallel pass plate polar circle PROBLEM quadrant of altitude rays Rectify the globe retrograde retrograde motion revolution right ascension round the sun satellites Saturn seen semicircle shadow shew ship situation solar spectator sphere strong brass meridian sun appears sun's place superior planet suppose surface telescope terrestrial globe tion tropic tropic of Cancer turn the globe Venus vertical visible west to east zenith
Pasajes populares
Página 72 - Their names are 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.
Página 226 - If both the places be situated on the same parallel of latitude, their bearing is either east or west from each other ; if the'y be situated on the same meridian, they bear north and south from each other ; if they be situated on the same rhumb-line, that rhumbline is their bearing : if they be not situated on the same rhumb-line, lay the quadrant of altitude over the. two places, and that rhumb-line which is the nearest of...
Página 54 - Our views of Nature, however imperfect, serve to represent to us, in the most sensible manner, that mighty power which prevails throughout, acting with a force and efficacy that appears to suffer no diminution from the greatest distances of space or intervals of time...
Página 199 - To make this circle answer the purpose, a semicircular wire is placed over it, carrying two indices, one on the east, the other on the west side of the strong brass circle.
Página 308 - By subtracting this from twenty-four hours, we have the length of the shortest night. If we bring the first degree of Capricorn to the brass meridian' and proceed in all respects as before, we shall have the length of the longest night and shortest day. Thus, at Delhi, the...
Página 312 - As the terrestrial globe by turning on its axis represents the real diurnal motion of the earth ; so the celestial globe, by turning on its axis, represents the apparent motion of the heavens.
Página 210 - ... than the hour at the given place, turn the globe eastward till the index has passed over as many hours as are equal to the given...
Página 285 - ... equal parts or degrees, as in the figure. Because the hour-lines are less distant from each other about noon, than in any other part of the dial, it is best to have the centres of these quadrants at a little distance from the centre of the dial-plane...
Página 420 - The grand transition, that there lives and works A soul in all things, and that soul is God. The beauties of the wilderness are His, That make so gay the solitary place Where no eye sees them. And the fairer forms That cultivation glories in are His. He sets the bright procession on its way, And marshals all the order of the year ; He marks the bounds which winter may not pass, And blunts his pointed fury ; in its case, Russet and rude...
Página 83 - THE natural advantages which arise from the position of the earth which we inhabit with respect to the other planets, afford much employment to mathematical speculation, by which it has been discovered, that no other conformation of...