Outlines of Astronomy |
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Page xv
... Situation of the solar apex . Agreement of southern and northern stars in giving the same result . Principles on which the investigation of the solar motion depends . Absolute velocity of the Sun's motion . Supposed revolution of the ...
... Situation of the solar apex . Agreement of southern and northern stars in giving the same result . Principles on which the investigation of the solar motion depends . Absolute velocity of the Sun's motion . Supposed revolution of the ...
Page 25
... situation , or with which to compare their distances . ( 13. ) To the reader who now for the first time takes up a ... situation of the spectator among them ; and if this situation be liable to GENERAL NOTIONS . 25.
... situation , or with which to compare their distances . ( 13. ) To the reader who now for the first time takes up a ... situation of the spectator among them ; and if this situation be liable to GENERAL NOTIONS . 25.
Page 26
John Frederick William Herschel. among them ; and if this situation be liable to change , unknown to the spectator himself , an appearance of change in the respective situations of the objects will arise , without the reality . If , then ...
John Frederick William Herschel. among them ; and if this situation be liable to change , unknown to the spectator himself , an appearance of change in the respective situations of the objects will arise , without the reality . If , then ...
Page 43
... situation we view and judge of them as we do of terrestrial objects - in detail , and with an acquired habit of attention to parts . Aloft we have no associations to guide us , and their insulation in the expanse of sky leads us rather ...
... situation we view and judge of them as we do of terrestrial objects - in detail , and with an acquired habit of attention to parts . Aloft we have no associations to guide us , and their insulation in the expanse of sky leads us rather ...
Page 45
... situation , he should shift his horizon ( which is always a plane passing through his eye , and touching the spherical convexity of the earth ) ; or unless , by some movements proper to the heavenly bodies , they should of themselves ...
... situation , he should shift his horizon ( which is always a plane passing through his eye , and touching the spherical convexity of the earth ) ; or unless , by some movements proper to the heavenly bodies , they should of themselves ...
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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