Outlines of astronomy |
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Page xxiii
... heavens . Of the Milky Way or galaxy . Its supposed form that of a flat stratum partially subdivided . Its visible course among the constellations . Its Internal structure . Its apparently indefinite extent in certain direc- tions . Of ...
... heavens . Of the Milky Way or galaxy . Its supposed form that of a flat stratum partially subdivided . Its visible course among the constellations . Its Internal structure . Its apparently indefinite extent in certain direc- tions . Of ...
Page 10
... heavens only apparent ; yet there are many problems in astronomy which are not only easier con- ceived , but more simply resolved by adopting the idea of a diurnal rotation of the heavens , it being understood once for all that ...
... heavens only apparent ; yet there are many problems in astronomy which are not only easier con- ceived , but more simply resolved by adopting the idea of a diurnal rotation of the heavens , it being understood once for all that ...
Page 37
... heavenly bodies pictured , projected , or mapped down on that imaginary sphere we call the sky or heaven . Thus , we may easily conceive that the moon , which appears to us as large as the sun , though less bright , may owe that ...
... heavenly bodies pictured , projected , or mapped down on that imaginary sphere we call the sky or heaven . Thus , we may easily conceive that the moon , which appears to us as large as the sun , though less bright , may owe that ...
Page 40
... heavenly bodies will appear to occupy the same places in the concave of the sky which they did at that instant ... heavens , and their return to the same apparent places at the same hours of the day and night . The accomplishment ...
... heavenly bodies will appear to occupy the same places in the concave of the sky which they did at that instant ... heavens , and their return to the same apparent places at the same hours of the day and night . The accomplishment ...
Page 41
... heavenly bodies . We have no reason to believe , from history , that any sensible change has taken place since the earliest ages in the ... heavens can be obtained . He - - - will then perceive , above and around APPARENT DIURNAL MOTION . 41.
... heavenly bodies . We have no reason to believe , from history , that any sensible change has taken place since the earliest ages in the ... heavens can be obtained . He - - - will then perceive , above and around APPARENT DIURNAL MOTION . 41.
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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