Outlines of Astronomy |
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Page v
... remarkable discovery of an additional ring of Saturn , and the curious researches of M. Peters on the proper motion of Sirius , with several minor features , are noticed . Where such additions are introduced in the text , they are ...
... remarkable discovery of an additional ring of Saturn , and the curious researches of M. Peters on the proper motion of Sirius , with several minor features , are noticed . Where such additions are introduced in the text , they are ...
Page xvi
... remarkable . Classification of nebulæ and clusters . Their distribution over the heavens . Irregular clusters . Resolvability of nebulæ . Theory of the formation of clusters by nebulous subsidence . Of elliptic nebulæ . That of ...
... remarkable . Classification of nebulæ and clusters . Their distribution over the heavens . Irregular clusters . Resolvability of nebulæ . Theory of the formation of clusters by nebulous subsidence . Of elliptic nebulæ . That of ...
Page 29
... remarkable addition , viz . , that the angular diameter of the visible area , as measured by the dip sec- tor , is materially less than at a lower level ; or , in other words , that the apparent size of the earth has sensibly diminished ...
... remarkable addition , viz . , that the angular diameter of the visible area , as measured by the dip sec- tor , is materially less than at a lower level ; or , in other words , that the apparent size of the earth has sensibly diminished ...
Page 50
... remarkable con- stellation or group of stars , called by astronomers the GREAT BEAR . ( 60. ) He will further observe , that the apparent relative situations of all the stars among one another , is not changed by their diurnal motion ...
... remarkable con- stellation or group of stars , called by astronomers the GREAT BEAR . ( 60. ) He will further observe , that the apparent relative situations of all the stars among one another , is not changed by their diurnal motion ...
Page 71
... remarkable occasions of periodical recurrence , are observed , if prolonged backwards , apparently to meet nearly in one point of the sphere ; a certain indication of a general near approach to parallelism in the real directions of ...
... remarkable occasions of periodical recurrence , are observed , if prolonged backwards , apparently to meet nearly in one point of the sphere ; a certain indication of a general near approach to parallelism in the real directions of ...
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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