Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 pages |
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Page 6
... body of science to meet its exigencies . The difference is that of pioneering a road through an untraversed country and advancing at ease along a broad and beaten highway ; that is to say , if we are determined to make ourselves ...
... body of science to meet its exigencies . The difference is that of pioneering a road through an untraversed country and advancing at ease along a broad and beaten highway ; that is to say , if we are determined to make ourselves ...
Page 11
... bodies , the earth itself , 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 ...
... bodies , the earth itself , 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 ...
Page 16
... body which , however seen , appears always circular , can be no other than a sphere or globe . ( 22. ) A diagram will elucidate this . Suppose the earth to be represented by the sphere LHNQ , whose centre is C , and let A , G , M be ...
... body which , however seen , appears always circular , can be no other than a sphere or globe . ( 22. ) A diagram will elucidate this . Suppose the earth to be represented by the sphere LHNQ , whose centre is C , and let A , G , M be ...
Page 27
... body , be- yond the utmost limit of the atmosphere . Then , if the air were away , the spectator would see it in the direction of the straight line A S. But , in reality , when the ray of light SA reaches the atmosphere , suppose at d ...
... body , be- yond the utmost limit of the atmosphere . Then , if the air were away , the spectator would see it in the direction of the straight line A S. But , in reality , when the ray of light SA reaches the atmosphere , suppose at d ...
Page 28
... bodies higher above the horizon in appearance than they are in reality . Any such body , situated actually in the true horizon , will appear above it , or will have some certain apparent altitude ( as it is called ) . Nay , even some of ...
... bodies higher above the horizon in appearance than they are in reality . Any such body , situated actually in the true horizon , will appear above it , or will have some certain apparent altitude ( as it is called ) . Nay , even some of ...
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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.