Outlines of Astronomy |
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Page 22
... latter claim for themselves , is often concealed from the eye of the gazer , and not always disposed in the straightest and most convenient form to follow by those who string them . This is no fault of those who have conducted the ...
... latter claim for themselves , is often concealed from the eye of the gazer , and not always disposed in the straightest and most convenient form to follow by those who string them . This is no fault of those who have conducted the ...
Page 43
... from us in the former situation as compared with the latter , as will be explained farther on . ( 48. ) After what has been said of the small extent of the atmosphere in comparison with the mass of the earth , we TWILIGHT . 43.
... from us in the former situation as compared with the latter , as will be explained farther on . ( 48. ) After what has been said of the small extent of the atmosphere in comparison with the mass of the earth , we TWILIGHT . 43.
Page 44
... latter . ( 50. ) A spectator on the earth's surface is prevented , by the great mass on which he stands , from seeing into all that.portion of space which is below him , or to see which he must look in any degree downwards It is true ...
... latter . ( 50. ) A spectator on the earth's surface is prevented , by the great mass on which he stands , from seeing into all that.portion of space which is below him , or to see which he must look in any degree downwards It is true ...
Page 47
John Frederick William Herschel. admitting into view the former , and successively hiding the latter . As the horizon of every such spectator , however , appears to him motionless , all such changes will be referred by him to a motion in ...
John Frederick William Herschel. admitting into view the former , and successively hiding the latter . As the horizon of every such spectator , however , appears to him motionless , all such changes will be referred by him to a motion in ...
Page 63
... latter is its proper designation . 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 . 50 m . 381s . ' ( 92. ) Knowing the longitude and latitude of a ...
... latter is its proper designation . 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 . 50 m . 381s . ' ( 92. ) Knowing the longitude and latitude of a ...
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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