Outlines of astronomy |
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Page x
... regarded as one of the noblest triumphs of theory . In the account here given of this discovery , I trust to have expressed myself with complete impartiality ; and in the ex- position of the perturbative action on Uranus , by which the ...
... regarded as one of the noblest triumphs of theory . In the account here given of this discovery , I trust to have expressed myself with complete impartiality ; and in the ex- position of the perturbative action on Uranus , by which the ...
Page 12
... regarded as an individual body , is one principal object of the astronomer's consideration , and , indeed , the chief of all . It derives its importance , in a practical as well as theoretical sense , not only from its proximity , and ...
... regarded as an individual body , is one principal object of the astronomer's consideration , and , indeed , the chief of all . It derives its importance , in a practical as well as theoretical sense , not only from its proximity , and ...
Page 20
... regarded as trifling deviations from the general outline of the whole mass , as we consider an orange not the less round for the roughness on its rind . 2dly , That the appearance of a visible horizon , or sea - offing , is a ...
... regarded as trifling deviations from the general outline of the whole mass , as we consider an orange not the less round for the roughness on its rind . 2dly , That the appearance of a visible horizon , or sea - offing , is a ...
Page 44
... regarded as one great constellation , which seems to revolve with a uniform motion , as if it formed one coherent mass ; or as if it were attached to the internal surface of a vast hollow sphere , having the earth , or rather the ...
... regarded as one great constellation , which seems to revolve with a uniform motion , as if it formed one coherent mass ; or as if it were attached to the internal surface of a vast hollow sphere , having the earth , or rather the ...
Page 68
... regarded as a plane surface , on which objects are seen projected or depicted as in common perspective . But when large amplitudes of the visual arca are considered , or when the whole contents of space are regarded as projected on the ...
... regarded as a plane surface , on which objects are seen projected or depicted as in common perspective . But when large amplitudes of the visual arca are considered , or when the whole contents of space are regarded as projected on the ...
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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