Outlines of astronomy |
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Page 2
... effulgent centres of life and light to myriads of unseen worlds . So that when , after dilating his thoughts to comprehend the grandeur of those - ideas his calculations have called up , and exhausting his 2 OUTLINES OF ASTRONOMY .
... effulgent centres of life and light to myriads of unseen worlds . So that when , after dilating his thoughts to comprehend the grandeur of those - ideas his calculations have called up , and exhausting his 2 OUTLINES OF ASTRONOMY .
Page 3
sir John Frederick W. Herschel (1st bart.) ideas his calculations have called up , and exhausting his ima- gination and the powers of his language to devise similes and metaphors illustrative of the immensity of the scale on which his ...
sir John Frederick W. Herschel (1st bart.) ideas his calculations have called up , and exhausting his ima- gination and the powers of his language to devise similes and metaphors illustrative of the immensity of the scale on which his ...
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
... 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 there is no refraction . A celestial object , situated vertically ...
... 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 there is no refraction . A celestial object , situated vertically ...
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Common terms and phrases
amount angle angular appear apsides ascertained astronomical attraction axis bright calculation celestial circle comet curve described diameter difference direction disc distance disturbed body disturbing force diurnal diurnal motion double stars earth ecliptic Edition effect epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity heavens heliocentric hemisphere horizon inclination inequality instance instrument interval Julian period 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 perturbations phænomena planet planetary pole portion position precession proper motions proportion recede reckoned 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 vols whole zenith