Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 pages |
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Page viii
... 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 11
... 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 19
... 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 43
... 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 67
... regarded as a plane surface , on which objects are seen projected or depicted as in common perspective . But when large amplitudes of the visual area 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 area are considered , or when the whole contents of space are regarded as projected on the ...
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Common terms and phrases
angle angular appear apsides ascertained astronomical 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 Edition effect elements ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe heavens heliocentric horizon inclination 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 perturbations planet planetary pole portion position Post 8vo precession proper motions proportion recede recess reckoned refraction respect result revolution right ascension rotation round satellites Saturn seen sidereal sidereal day sidereal period situation solar sphere spherical stars station sun's suppose surface syzygies tangential force telescope tion Uranus variation velocity visible vols whole Woodcuts zenith
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Page 674 - A Dictionary of Science, Literature, and Art : Comprising the History, Description, and Scientific Principles of every Branch of Human Knowledge ; with the Derivation and Definition of all the Terms in General Use. Edited by WT BRANDE, FRSL and E.