Outlines of Astronomy |
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Page xviii
... calculations of that distance from the recorded observations of the celebrated transit of Venus in 1769 , the result of which is here brought under the notice of our readers . Beyond the limits of our own system , the appli- cation of ...
... calculations of that distance from the recorded observations of the celebrated transit of Venus in 1769 , the result of which is here brought under the notice of our readers . Beyond the limits of our own system , the appli- cation of ...
Page 25
... calculation , however , founded on our experimental knowledge of the properties of air , and the mechanical laws which regulate its dilatation and compression , is sufficient to show that , at an altitude above the surface of the earth ...
... calculation , however , founded on our experimental knowledge of the properties of air , and the mechanical laws which regulate its dilatation and compression , is sufficient to show that , at an altitude above the surface of the earth ...
Page 30
... , with referring the reader to works especially destined to * From an Arabic word of this signification . See this term technically defined in Chap . II . furnish these useful aids to calculation . It is , 30 OUTLINES OF ASTRONOMY .
... , with referring the reader to works especially destined to * From an Arabic word of this signification . See this term technically defined in Chap . II . furnish these useful aids to calculation . It is , 30 OUTLINES OF ASTRONOMY .
Page 31
Sir John Frederick William Herschel. furnish these useful aids to calculation . It is , however , de- sirable that he should bear in mind the following general notions of its amount , and law of variations . ( 43. ) 1st . In the zenith ...
Sir John Frederick William Herschel. furnish these useful aids to calculation . It is , however , de- sirable that he should bear in mind the following general notions of its amount , and law of variations . ( 43. ) 1st . In the zenith ...
Page 79
... calculation and due allowance , they actually vitiate , to their full extent , the results of any observations in which they subsist . Being , however , in their nature casual and accidental , their INSTRUMENTAL AND OTHER SOURCES OF ...
... calculation and due allowance , they actually vitiate , to their full extent , the results of any observations in which they subsist . Being , however , in their nature casual and accidental , their INSTRUMENTAL AND OTHER SOURCES OF ...
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amount angle angular appear apsides ascertained astronomical atmosphere attraction axis bright calculation celestial circle coincidence 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 heavens heliocentric hemisphere horizon inclination inequality instance instrument interval Jupiter latitude latter less light longitude lunar magnitude mass mean measure meridian micrometrical moon moon's nearly nebula node normal force nutation object observed orbit parallax parallel perigee perihelion period perturbations phænomena phænomenon planet planetary pole portion position precession precisely proper motion proportion recede recess 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 whole zenith