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 17.
Σελίδα 14
... sun's longitude ( commonly called the sun's place in the ecliptic ) and his declination 19. The month and day of the ... vertical at that instant 23. The month , day , and hour of the day at any place being given , to find all those places of ...
... sun's longitude ( commonly called the sun's place in the ecliptic ) and his declination 19. The month and day of the ... vertical at that instant 23. The month , day , and hour of the day at any place being given , to find all those places of ...
Σελίδα 17
... sun setting 63. Given the latitude of the place , day of the month , and ... sun when she is a morning star , and how long she sets after the sun when she is ... vertical on any given day 67. Given the latitude of a place , the day of the ...
... sun setting 63. Given the latitude of the place , day of the month , and ... sun when she is a morning star , and how long she sets after the sun when she is ... vertical on any given day 67. Given the latitude of a place , the day of the ...
Σελίδα 31
... sun being north of them at noon , when it has north declination , and then they cast their shadows south ; when the sun has south declina- tion , they cast their shadows north . 147. When the sun is vertical , or in the zenith , to the ...
... sun being north of them at noon , when it has north declination , and then they cast their shadows south ; when the sun has south declina- tion , they cast their shadows north . 147. When the sun is vertical , or in the zenith , to the ...
Σελίδα 34
... sun's meridian altitude , on the long- est day , decreases from the tropic of Cancer to the north pole ; and in the torrid zone , when the sun is vertical , there is no refraction ; hence , the refraction is the least in the torrid zone ...
... sun's meridian altitude , on the long- est day , decreases from the tropic of Cancer to the north pole ; and in the torrid zone , when the sun is vertical , there is no refraction ; hence , the refraction is the least in the torrid zone ...
Σελίδα 37
... vertical circles are imaginary great circles passing through the zenith and ... sun , moon , or a star , if it were ob- served at the centre of the earth ... vertical circle , contained between the centre of the object and the horizon ...
... vertical circles are imaginary great circles passing through the zenith and ... sun , moon , or a star , if it were ob- served at the centre of the earth ... vertical circle , contained between the centre of the object and the horizon ...
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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.