Outlines of Astronomy |
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Page xii
... latitudes - of longitudes . Conduct of a trigonometri- cal survey . Of maps . Projections of the sphere . Measurement of heights by the barometer ......... 118 CHAPTER V. OF URANOGRAPHY . Construction of celestial maps and globes by ...
... latitudes - of longitudes . Conduct of a trigonometri- cal survey . Of maps . Projections of the sphere . Measurement of heights by the barometer ......... 118 CHAPTER V. OF URANOGRAPHY . Construction of celestial maps and globes by ...
Page 49
... centre ; but there is near it one considerably 1 We suppose our observer to be stationed in some northern latitude ; some where in Europe , for example . bright star , called the Pole Star , which is 4 APPARENT DIURNAL MOTION . 49.
... centre ; but there is near it one considerably 1 We suppose our observer to be stationed in some northern latitude ; some where in Europe , for example . bright star , called the Pole Star , which is 4 APPARENT DIURNAL MOTION . 49.
Page 62
... marks the north and south points of the horizon , or the directions in which a spectator must set out if he would travel directly towards the north or south pole . ( 88. ) DEF . 7. The latitude of a 62 OUTLINES OF ASTRONOMY .
... marks the north and south points of the horizon , or the directions in which a spectator must set out if he would travel directly towards the north or south pole . ( 88. ) DEF . 7. The latitude of a 62 OUTLINES OF ASTRONOMY .
Page 63
... latitude . This definition of latitude , it will be observed , is to be con- sidered as only temporary . A more exact knowledge of the physical structure and figure of the earth , and a better acquaintance with the niceties of astronomy ...
... latitude . This definition of latitude , it will be observed , is to be con- sidered as only temporary . A more exact knowledge of the physical structure and figure of the earth , and a better acquaintance with the niceties of astronomy ...
Page 64
... latitudes are about 23 ° 28 ′ respectively , north and south . Their ( 94. ) DEF . 11. The Arctic and Antarctic circles are two small circles or parallels of latitude as distant from the north and south poles as the tropics are from the ...
... latitudes are about 23 ° 28 ′ respectively , north and south . Their ( 94. ) DEF . 11. The Arctic and Antarctic circles are two small circles or parallels of latitude as distant from the north and south poles as the tropics are from the ...
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Common terms and phrases
altitude amount angle angular appear apsides ascertained astronomers axis bright calculation celestial centre circle comet curve described diameter difference direction disc distance disturbed body disturbing force diurnal diurnal motion double stars earth ecliptic effect ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity greater heavens heliocentric horizon inclination increase inequality instance instrument interval 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 perpendicular perturbations planet planetary pole portion position precession proper motions proportion recede recess reckoned refraction remarkable respect result revolution right ascension rotation round satellites Saturn seen sidereal sidereal day sidereal period situation solar sphere spherical stars station sun's suppose syzygies tangential force telescope tion Uranus variation velocity visible whole zenith