Outlines of AstronomyLongman, green and Roberts, 1859 - 714 pages |
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Page 4
... they mutually sustain each other , and form a coherent whole . " This is what Dr. Whewell expressively terms the consilience of inductions . tice of decimal and sexagesimal arithmetic ; some moderate acquaintance 4 OUTLINES OF ASTRONOMY .
... they mutually sustain each other , and form a coherent whole . " This is what Dr. Whewell expressively terms the consilience of inductions . tice of decimal and sexagesimal arithmetic ; some moderate acquaintance 4 OUTLINES OF ASTRONOMY .
Page 16
... whole year , we shall find them constantly shifting , round a very large extent of the horizon ; and , besides , the ... whole earth , are yet too considerable with respect to ourselves and to that small portion of it which we can see at ...
... whole year , we shall find them constantly shifting , round a very large extent of the horizon ; and , besides , the ... whole earth , are yet too considerable with respect to ourselves and to that small portion of it which we can see at ...
Page 20
... whole . -- ( 25. ) In the first place , then , every one who has passed a little while at the sea side is aware that objects may be seen perfectly well beyond the offing or visible horizon - but not the whole of them . We only see their ...
... whole . -- ( 25. ) In the first place , then , every one who has passed a little while at the sea side is aware that objects may be seen perfectly well beyond the offing or visible horizon - but not the whole of them . We only see their ...
Page 21
... whole disappears : while yet the distinctness with which the last portion of the sail d is scen is such as to satisfy us that were it not for the interposed segment of the sea , ABCDE , the distance TE is not so great as to have ...
... whole disappears : while yet the distinctness with which the last portion of the sail d is scen is such as to satisfy us that were it not for the interposed segment of the sea , ABCDE , the distance TE is not so great as to have ...
Page 23
... whole of the land , with the exception of a few prominent points and ridges , must be comprised on it within the thickness of thin writing - paper ; and the highest hills would be represented by the smallest visible grains of sand ...
... whole of the land , with the exception of a few prominent points and ridges , must be comprised on it within the thickness of thin writing - paper ; and the highest hills would be represented by the smallest visible grains of sand ...
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Common terms and phrases
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 effect epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity heavens heliocentric hemisphere horizon inclination increase 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 phænomena planet planetary pole portion position precession precisely proper motions proportion recede recess reckoned refraction remarkable render respect result revolution revolving right ascension ring 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 whole zenith