Outlines of Astronomy |
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Page xiv
... whole revolution . Compensation in a complete revolution of the nodes . Lagrange's theorem of the stability of the inclinations of the plane- tary orbits . Change of obliquity of the ecliptic . Precession of the equinoxes explained ...
... whole revolution . Compensation in a complete revolution of the nodes . Lagrange's theorem of the stability of the inclinations of the plane- tary orbits . Change of obliquity of the ecliptic . Precession of the equinoxes explained ...
Page 26
... whole , with all that it holds within its substance or sustains on its surface , that we are speaking ; of a motion common to the solid mass beneath , to the ocean which flows around it , the air that rests upon it , and the clouds ...
... whole , with all that it holds within its substance or sustains on its surface , that we are speaking ; of a motion common to the solid mass beneath , to the ocean which flows around it , the air that rests upon it , and the clouds ...
Page 28
... whole earth , are yet too considerable with respect to ourselves and to that small portion of it which we can see at a single view , to allow of our forming any judgment of the form of the whole , from that of a part so disfigured . But ...
... whole earth , are yet too considerable with respect to ourselves and to that small portion of it which we can see at a single view , to allow of our forming any judgment of the form of the whole , from that of a part so disfigured . But ...
Page 31
... 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 ...
... 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 ...
Page 32
... whole disappears : while yet the distinctness with which the last portion of the sail d is seen 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 seen 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 ...
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Common terms and phrases
altitude amount angle angular appear apsides ascertained astronomers 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 effect ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity greater heavens heliocentric 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 perpendicular perturbations planet planetary pole portion position precession proper motions proportion recede recess reckoned refraction remarkable respect result revolution right ascension rotation round satellites Saturn seen sidereal sidereal day sidereal period situation solar sphere spherical stars station sun's suppose syzygies tangential force telescope tion Uranus variation velocity visible whole zenith