Outlines of Astronomy |
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Page 22
... passing under his eye in an instant of time , and presented as a consecutive whole to his imagination . A familiar parallel , or an illustration drawn from some artificial or natural process , of which he has that direct and individual ...
... passing under his eye in an instant of time , and presented as a consecutive whole to his imagination . A familiar parallel , or an illustration drawn from some artificial or natural process , of which he has that direct and individual ...
Page 25
... passes here below , to what is going on in the regions where they exist and move . Under such con- ventions , astronomy , as a science of cause and effect , could not exist , but must be limited to a mere registry of appearances ...
... passes here below , to what is going on in the regions where they exist and move . Under such con- ventions , astronomy , as a science of cause and effect , could not exist , but must be limited to a mere registry of appearances ...
Page 38
... passing through the eye , the object , and the earth's centre . ( 40. ) The effect of the air's refraction , then , is to raise all the heavenly bodies higher above the horizon in appearance than they are in reality . Any such body ...
... passing through the eye , the object , and the earth's centre . ( 40. ) The effect of the air's refraction , then , is to raise all the heavenly bodies higher above the horizon in appearance than they are in reality . Any such body ...
Page 41
... passing through it , the lower most , the higher less , and that which , like SRO , merely grazes the exterior limit of the atmosphere , not at all . Let us consider several points , A , B , C , D , each more remote than the last from A ...
... passing through it , the lower most , the higher less , and that which , like SRO , merely grazes the exterior limit of the atmosphere , not at all . Let us consider several points , A , B , C , D , each more remote than the last from A ...
Page 42
... passing cloud would be pitchy darkness ; the stars would be visible all day , and every apartment , into which the ... passes obliquely from a higher level to a lower one , or vice versâ , its course is not rectilinear , but concave ...
... passing cloud would be pitchy darkness ; the stars would be visible all day , and every apartment , into which the ... passes obliquely from a higher level to a lower one , or vice versâ , its course is not rectilinear , but concave ...
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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