Outlines of Astronomy |
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Page vii
... former volume , but to remodel it alto- gether ( though in complete accordance with its original design as a work of explanation ) ; to introduce much new matter in the earlier portions of it ; to re - write , upon a far more matured ...
... former volume , but to remodel it alto- gether ( though in complete accordance with its original design as a work of explanation ) ; to introduce much new matter in the earlier portions of it ; to re - write , upon a far more matured ...
Page xiii
... former volcanic activity . Its atmosphere . Climate . Radiation of heat from its surface . Rotation on its own axis . Libration . Appearance of the Earth from it .............................. . CHAPTER VIII . 213 Of terrestrial gravity ...
... former volcanic activity . Its atmosphere . Climate . Radiation of heat from its surface . Rotation on its own axis . Libration . Appearance of the Earth from it .............................. . CHAPTER VIII . 213 Of terrestrial gravity ...
Page 43
... distance 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.
... distance 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 46
... former case , he will see every part , but , in the latter , only that portion of it which remains constantly opposite to him , and imme- diately under his eye . ( 53. ) By such a rotation of the earth , then , as we have supposed , the ...
... former case , he will see every part , but , in the latter , only that portion of it which remains constantly opposite to him , and imme- diately under his eye . ( 53. ) By such a rotation of the earth , then , as we have supposed , the ...
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 ...
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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