Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 pages |
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Page xi
... Earth's motion . Relative motion . Motions partly real , partly apparent . Geocentric astronomy , or ideal reference of phænomena to the Earth's centre as a common conventional station · 10 CHAPTER II . Terminology and elementary ...
... Earth's motion . Relative motion . Motions partly real , partly apparent . Geocentric astronomy , or ideal reference of phænomena to the Earth's centre as a common conventional station · 10 CHAPTER II . Terminology and elementary ...
Page 12
... earth , after all , may be nothing but a great star . How correct such an idea may be , and with what limitations and modifications it is to be admitted , we shall see presently . ( 14. ) It is evident , that , to form any just notions ...
... earth , after all , may be nothing but a great star . How correct such an idea may be , and with what limitations and modifications it is to be admitted , we shall see presently . ( 14. ) It is evident , that , to form any just notions ...
Page 14
... earth as in mo- tion , we must form to ourselves a conception of its shape and size . Now , an object cannot have shape and size unless it is limited on all sides by some definite outline , so as to admit of our imagining it , at least ...
... earth as in mo- tion , we must form to ourselves a conception of its shape and size . Now , an object cannot have shape and size unless it is limited on all sides by some definite outline , so as to admit of our imagining it , at least ...
Page 15
... earth cannot extend indefinitely in depth downwards , nor indefinitely in surface laterally ; it must have not only bounds in a horizontal direction , but also an under side round which the sun , moon , and stars can pass ; and that ...
... earth cannot extend indefinitely in depth downwards , nor indefinitely in surface laterally ; it must have not only bounds in a horizontal direction , but also an under side round which the sun , moon , and stars can pass ; and that ...
Page 21
... earth , the solution alluded to is contained in the following propòsition : - The earth's diameter bears the same proportion to the distance of the visible horizon from the eye as that distance does to the height of the eye above the ...
... earth , the solution alluded to is contained in the following propòsition : - The earth's diameter bears the same proportion to the distance of the visible horizon from the eye as that distance does to the height of the eye above the ...
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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.