Outlines of Astronomy |
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Page 18
... called , which to ordinary apprehension present only lucid sparks or brilliant atoms , are to him suns of various and transcendent glory - effulgent centres of life and light to myriads of unseen worlds . So that when , after dilating ...
... called , which to ordinary apprehension present only lucid sparks or brilliant atoms , are to him suns of various and transcendent glory - effulgent centres of life and light to myriads of unseen worlds . So that when , after dilating ...
Page 24
... called , but the sun , the moon , and all the visible constituents of the heavens ) , suffi- ciently indicates this ; and , although the term astrology , which denotes the reason , theory , or interpretation of the stars , has become ...
... called , but the sun , the moon , and all the visible constituents of the heavens ) , suffi- ciently indicates this ; and , although the term astrology , which denotes the reason , theory , or interpretation of the stars , has become ...
Page 28
... called , which runs all round us in a circle , having our station for its centre . That this line is really a circle , we conclude , first , from the perfect apparent similar- ity of all its parts ; and , secondly , from the fact of all ...
... called , which runs all round us in a circle , having our station for its centre . That this line is really a circle , we conclude , first , from the perfect apparent similar- ity of all its parts ; and , secondly , from the fact of all ...
Page 39
... called , or a statement of the amount of apparent displacement arising from this cause , at all altitudes , or in every situation of a heavenly body , from the horizon to the zenith , ' or point of the sky vertically above the spectator ...
... called , or a statement of the amount of apparent displacement arising from this cause , at all altitudes , or in every situation of a heavenly body , from the horizon to the zenith , ' or point of the sky vertically above the spectator ...
Page 43
... called celes- tial or astronomical refraction . ( 47. ) Another effect of refraction is to distort the visible forms and proportions of objects seen near the horizon . The sun , for instance , which at a considerable altitude always ...
... called celes- tial or astronomical refraction . ( 47. ) Another effect of refraction is to distort the visible forms and proportions of objects seen near the horizon . The sun , for instance , which at a considerable altitude always ...
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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