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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Αποτελέσματα 1 - 5 από τα 19.
Σελίδα 36
... shew the height of the sun , moon , and stars . These circles are not drawn on the globe , but they may be described for any latitude , by the quad- rant of altitude . 173. Parallels of celestial latitude are small circles drawn on the ...
... shew the height of the sun , moon , and stars . These circles are not drawn on the globe , but they may be described for any latitude , by the quad- rant of altitude . 173. Parallels of celestial latitude are small circles drawn on the ...
Σελίδα 45
... shew a dim , hazy light , like little specks or clouds . It may be further remarked , that the milky way is a continued as- semblage of Nebula . In some of the spaces termed Nebulous , no stars appear . 203. Magellanic clouds are ...
... shew a dim , hazy light , like little specks or clouds . It may be further remarked , that the milky way is a continued as- semblage of Nebula . In some of the spaces termed Nebulous , no stars appear . 203. Magellanic clouds are ...
Σελίδα 87
... shew the distance in degrees . PROBLEM V. * The difference of longitude between two places being given , to find the difference of time at any given hour . RULE . Multiply the difference by 4 , and divide the product by 60 . The sun ...
... shew the distance in degrees . PROBLEM V. * The difference of longitude between two places being given , to find the difference of time at any given hour . RULE . Multiply the difference by 4 , and divide the product by 60 . The sun ...
Σελίδα 93
... shew how many de- grees it contains . If the distance between the two places should exceed the length of the quadrant , stretch a piece of thread over the two places , and mark their distance ; the extent of thread between these marks ...
... shew how many de- grees it contains . If the distance between the two places should exceed the length of the quadrant , stretch a piece of thread over the two places , and mark their distance ; the extent of thread between these marks ...
Σελίδα 99
... shew the Anteci ; an equal number of degrees , counted from the west point of the horizon towards the north , will shew the Pericci ; and the same number of degrees , count- 99.
... shew the Anteci ; an equal number of degrees , counted from the west point of the horizon towards the north , will shew the Pericci ; and the same number of degrees , count- 99.
Άλλες εκδόσεις - Προβολή όλων
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.