A Compendious Treatise on the Use of the Globes, and of Maps: Compiled from the Works of Keith, Ferguson, Adams, Hutton, Bryan, Goldsmith, and Other Eminent Authors; Being a Plain and Comprehensive Introduction to the Practical Knowledge of Geography and Astronomy ...J. W. Burditt and Company and W. Wells, Court street., 1812 - 183 σελίδες |
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Σελίδα 11
... s how many 26 ib . Oblique ascension 188 39 descension 139 ib . Occultation 227 50 Opposition 212 49 Orbit of the earth ... Polar circles 65 distance 181 Poles of the earth 45 Celestial 46 Pole of a circle 96 Positions of the sphere 131 ...
... s how many 26 ib . Oblique ascension 188 39 descension 139 ib . Occultation 227 50 Opposition 212 49 Orbit of the earth ... Polar circles 65 distance 181 Poles of the earth 45 Celestial 46 Pole of a circle 96 Positions of the sphere 131 ...
Σελίδα 18
... poles of the earth are the two ex- tremities of its axis ; one of which is called the north or arctic ; the other , the south or antarc- tic pole .- [ Fig . 1. ] 46. The celestial poles are two imaginary points in the heavens , exactly ...
... poles of the earth are the two ex- tremities of its axis ; one of which is called the north or arctic ; the other , the south or antarc- tic pole .- [ Fig . 1. ] 46. The celestial poles are two imaginary points in the heavens , exactly ...
Σελίδα 19
... poles , and divides the globe into two hemispheres , northern and southern.- [ Fig . 1. ] 54. The latitudes of places ... south pole , and cutting the equator at right angles.- [ Fig . 2. ] 58. Every place on the globe , is supposed to ...
... poles , and divides the globe into two hemispheres , northern and southern.- [ Fig . 1. ] 54. The latitudes of places ... south pole , and cutting the equator at right angles.- [ Fig . 2. ] 58. Every place on the globe , is supposed to ...
Σελίδα 20
... southern , the tropic of capricorn .- [ Fig . 2. ] 64. The tropics are the limits of the torrid zone . 65. The polar circles are small circles par- allel to the equator , at the distance of 66 ° 32 ′ from it , or 23 ° 28 ′ from each pole ...
... southern , the tropic of capricorn .- [ Fig . 2. ] 64. The tropics are the limits of the torrid zone . 65. The polar circles are small circles par- allel to the equator , at the distance of 66 ° 32 ′ from it , or 23 ° 28 ′ from each pole ...
Σελίδα 21
... south . 74. The vernal and autumnal signs are called ascending signs ; because when the sun is in any of them , his declination is increasing . The sum- mer and ... north declina- tion , he gradually shines further over the north pole 21.
... south . 74. The vernal and autumnal signs are called ascending signs ; because when the sun is in any of them , his declination is increasing . The sum- mer and ... north declina- tion , he gradually shines further over the north pole 21.
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Συχνά εμφανιζόμενοι όροι και φράσεις
21st of June Aldebaran amplitude Analemma Answer appears Arcturus axis azimuth brass meridian Bring the given Cape celestial globe centre circle to twelve compasses constellation descension distance diurnal earth eastern eastward ecliptic Elevate the pole ephemeris equal equator Examples find the latitude find the sun's frigid zone given day given place given star globe westward grees heavens horizon hour circle index has passed inhabitants Jupiter latitude latitude and longitude length Libra London longest day longitude mark meridian altitude minutes month moon's morning motion node north latitude north or south north pole number of degrees o'clock oblique ascension observe orbit parallel of latitude past noon point Aries PROBLEM quadrant of altitude reckoning right ascension rise and set RULE set the index shew signs solar south pole sun is vertical sun rises sun's altitude sun's declination sun's place torrid zone tude turn the globe twilight Venus western edge zenith
Δημοφιλή αποσπάσματα
Σελίδα 52 - In this case, it is obvious that the plane of the circle of illumination would be perpendicular to a line drawn from the centre of the sun to the centre of the earth...
Σελίδα 128 - Elevate the globe to so many degrees above the horizon as are equal to the latitude of the place...
Σελίδα 37 - The PRIME VERTICAL is that azimuth circle which passes through the east and west points of the horizon, and is always at right angles...
Σελίδα 168 - Problem 12 : ihen elevate the pole as many degrees above the horizon as are equal to the latitude of that place, and bring it to the brass meridian ; so will it then be the zenith or centre of the horizon.
Σελίδα 136 - Pisces to the eastern edge of the horizon, and set the index to 12 ; turn the globe westward till the other marks successively come to the horizon, and observe the hours passed over by the index ; the intervals of time between the marks coming to the horizon will show the diurnal difference of time between the moon's rising.
Σελίδα 168 - Find the longitude of the given place on the equator, bring it to that part of the brass meridian which is numbered from the equator towards the poles ; and then, under the given latitude, on the brass meridian, you will find the place required.
Σελίδα 88 - Bring the given place to that part of the brass meridian which is numbered from the north pole towards the equator, and observe its distance in degrees from the pole ; count the same number of degrees on the brass meridian from the equator towards the...
Σελίδα 155 - Rectify the globe for the latitude of the place, find the sun's place in the ecliptic and bring it to the brass meridian, and set the index of the hour circle to 12. Turn the globe westward till the sun's place comes to the...
Σελίδα 157 - LXV.) ; bring this place to that part of the brass meridian which is numbered from the equinoctial towards the poles, and observe the degree above it ; for all places on the earth having that latitude will have the moon vertical (or nearly so) when she comes to their respective meridians.