Outlines of astronomy |
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Page xx
... Earth's rotation . Trade winds . Determination of geographical positions of latitudes — of longitudes . Conduct of a ... Earth's axis . The seasons . Heat received from the Sun in different parts of the orbit . Effect of excentricity of ...
... Earth's rotation . Trade winds . Determination of geographical positions of latitudes — of longitudes . Conduct of a ... Earth's axis . The seasons . Heat received from the Sun in different parts of the orbit . Effect of excentricity of ...
Page xxi
... Earth round the Sun in accordance with these laws . Masses of the Earth and Sun compared . Density of the Sun. Force of gravity at its surface . Disturbing effect of the Sun on the Moon's motion CHAPTER IX . OF THE SOLAR SYSTEM . - 290 ...
... Earth round the Sun in accordance with these laws . Masses of the Earth and Sun compared . Density of the Sun. Force of gravity at its surface . Disturbing effect of the Sun on the Moon's motion CHAPTER IX . OF THE SOLAR SYSTEM . - 290 ...
Page 13
... 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 15
... 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 16
... 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 ...
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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