Outlines of astronomy |
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Page xx
... longitudes . Conduct of a trigonometrical survey . Of maps . Projec- tions of the sphere . Measurement of heights by the barometer CHAPTER V. OF URANOGRAPHY . - Page 125 Construction of celestial maps and globes by observations of right ...
... longitudes . Conduct of a trigonometrical survey . Of maps . Projec- tions of the sphere . Measurement of heights by the barometer CHAPTER V. OF URANOGRAPHY . - Page 125 Construction of celestial maps and globes by observations of right ...
Page 59
... longitude , we reckon from Greenwich . The longitude of a place is , therefore , measured by the arc of the equator intercepted between the meridian of the place and that of Greenwich ; or , which is the same thing , by the spherical ...
... longitude , we reckon from Greenwich . The longitude of a place is , therefore , measured by the arc of the equator intercepted between the meridian of the place and that of Greenwich ; or , which is the same thing , by the spherical ...
Page 60
... Longitude is also reckoned in time at the rate of 24 h . for 360 ° , or 15 ° per hour . In this system the longitude of Paris is 23 h . 50m . 39 s . * ( 92. ) Knowing the longitude and latitude of a place , it may be laid down on an ...
... Longitude is also reckoned in time at the rate of 24 h . for 360 ° , or 15 ° per hour . In this system the longitude of Paris is 23 h . 50m . 39 s . * ( 92. ) Knowing the longitude and latitude of a place , it may be laid down on an ...
Page 110
... longitude and latitude ; in the starry heavens , if we know its right ascension and declina- tion ; in the visible hemisphere , if we know its azimuth and altitude , & c . - - ( 182. ) To observe an object at any point of its diurnal ...
... longitude and latitude ; in the starry heavens , if we know its right ascension and declina- tion ; in the visible hemisphere , if we know its azimuth and altitude , & c . - - ( 182. ) To observe an object at any point of its diurnal ...
Page 163
... longitude , the former assigning its distance from the poles or the equator , the latter , the me- ridian on which that distance is to be reckoned . To these , in strictness , should be added , its height above the sea level ; but the ...
... longitude , the former assigning its distance from the poles or the equator , the latter , the me- ridian on which that distance is to be reckoned . To these , in strictness , should be added , its height above the sea level ; but the ...
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amount angle angular appear apsides ascertained astronomical attraction axis bright calculation celestial circle comet curve described diameter difference direction disc distance disturbed body disturbing force diurnal diurnal motion double stars earth ecliptic Edition effect epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity heavens heliocentric hemisphere horizon inclination inequality instance instrument interval Julian period Jupiter latitude latter less light longitude lunar magnitude mass mean measure meridian moon moon's motion nearly nebula node normal force nutation object observed orbit parallax parallel perigee perihelion period perturbations phænomena planet planetary pole portion position precession proper motions proportion recede reckoned refraction remarkable respect result revolution revolving right ascension rotation round satellites Saturn seen sidereal sidereal day situation solar sphere spherical stars station sun's suppose surface syzygies tangential force telescope tion Uranus variation velocity visible vols whole zenith