Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 pages |
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Page vii
... ellipse is brought distinctly under inspection ; and a clearness of conception introduced into the perturbations of the excentricities , perihelia , and epochs which the author does not think it presump- tion to believe can be obtained ...
... ellipse is brought distinctly under inspection ; and a clearness of conception introduced into the perturbations of the excentricities , perihelia , and epochs which the author does not think it presump- tion to believe can be obtained ...
Page xii
... ellipse about the focus . Law of the angular velocity . Equable description of areas . Parallax of the Sun. Its distance and magnitude . Copernican explanation of the Sun's apparent motion . Parallelism of the Earth's axis . The seasons ...
... ellipse about the focus . Law of the angular velocity . Equable description of areas . Parallax of the Sun. Its distance and magnitude . Copernican explanation of the Sun's apparent motion . Parallelism of the Earth's axis . The seasons ...
Page 127
... ellipses ; so that , on such a shaped earth , the horizon of a spectator would nowhere ( except at the poles ) be exactly circular , but somewhat elliptical . It is easy to demonstrate , however , that its deviation from the circular ...
... ellipses ; so that , on such a shaped earth , the horizon of a spectator would nowhere ( except at the poles ) be exactly circular , but somewhat elliptical . It is easy to demonstrate , however , that its deviation from the circular ...
Page 134
... ellipse , or nearly so , having NS , the axis of the earth , for its shorter , and EF , the equatorial diameter , for its longer axis ; and that the form of the earth's surface is that which would arise from making such a curve revolve ...
... ellipse , or nearly so , having NS , the axis of the earth , for its shorter , and EF , the equatorial diameter , for its longer axis ; and that the form of the earth's surface is that which would arise from making such a curve revolve ...
Page 193
... ellipse of 18 ′′ .5 in diameter , it is carried by the greater and regularly pro- gressive motion of precession over so much of its circle round the pole of the ecliptic as corresponds to nineteen years , - that is to say , over an ...
... ellipse of 18 ′′ .5 in diameter , it is carried by the greater and regularly pro- gressive motion of precession over so much of its circle round the pole of the ecliptic as corresponds to nineteen years , - that is to say , over an ...
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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.