Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка 45
... revolution- realizing , in short , what we have already stated in art . 51 . ( 64. ) If he travel continually southwards , he will at length reach a line on the earth's surface , called the equator , at any point of which ...
... revolution- realizing , in short , what we have already stated in art . 51 . ( 64. ) If he travel continually southwards , he will at length reach a line on the earth's surface , called the equator , at any point of which ...
Сторінка 53
... revolution of the stars , so as to 66 save appearances ; but the movements of the sun and moon , as well as those of the planets , are incompatible with such a supposition , as will appear when we come to treat of these bodies . On the ...
... revolution of the stars , so as to 66 save appearances ; but the movements of the sun and moon , as well as those of the planets , are incompatible with such a supposition , as will appear when we come to treat of these bodies . On the ...
Сторінка 57
... revolution in the interval which elapses between any star leaving a certain point in the heavens , and returning to the same point again . ( 83. ) DEF . 2. The poles of the earth are the points where its axis meets its surface . The ...
... revolution in the interval which elapses between any star leaving a certain point in the heavens , and returning to the same point again . ( 83. ) DEF . 2. The poles of the earth are the points where its axis meets its surface . The ...
Сторінка 70
... revolution , come to the meridian , successively , of every place on the globe once in twenty - four sidereal hours . And , since the diurnal ro- tation is uniform , the interval , in sidereal time , which elapses Oupavos , the heavens ...
... revolution , come to the meridian , successively , of every place on the globe once in twenty - four sidereal hours . And , since the diurnal ro- tation is uniform , the interval , in sidereal time , which elapses Oupavos , the heavens ...
Сторінка 71
... revolution ; once above and once below the pole . These are called their upper and lower culminations . ( 126. ) The problems of uranometry , as we have described it , consist in the solution of a variety of spherical triangles , both ...
... revolution ; once above and once below the pole . These are called their upper and lower culminations . ( 126. ) The problems of uranometry , as we have described it , consist in the solution of a variety of spherical triangles , both ...
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Outlines of Astronomy John Frederick William Herschel,Sir John Frederick William Herschel Повний перегляд - 1851 |
Загальні терміни та фрази
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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Сторінка 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.