Outlines of Astronomy |
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Page viii
... tion ; and a clearness of conception introduced into the pertur- bations of the excentricities , perihelia , and epochs , which the author does not think it presumption to believe can be obtained by no other method , and which certainly ...
... tion ; and a clearness of conception introduced into the pertur- bations of the excentricities , perihelia , and epochs , which the author does not think it presumption to believe can be obtained by no other method , and which certainly ...
Page xiii
... tion . Elliptic elements of a planet's orbit . Its heliocentric and geocentric place . Empirical law of planetary distances ; violated in the case of Nep- tune . The ultra - zodiacal planets . Physical peculiarities observable in each ...
... tion . Elliptic elements of a planet's orbit . Its heliocentric and geocentric place . Empirical law of planetary distances ; violated in the case of Nep- tune . The ultra - zodiacal planets . Physical peculiarities observable in each ...
Page xiv
... tion of the Major Axis produced only by the tangential force . Lagrange's theorem of the conservation of the mean distances and periods . Theory of the Perihelia and Excentricities . Geometrical representation of their mo- mentary ...
... tion of the Major Axis produced only by the tangential force . Lagrange's theorem of the conservation of the mean distances and periods . Theory of the Perihelia and Excentricities . Geometrical representation of their mo- mentary ...
Page 17
... tion , on the credit of others . Such an effort is , in fact , a commencement of that intellectual discipline which forms one of the most important ends of all science . It is the first movement of approach towards that state of mental ...
... tion , on the credit of others . Such an effort is , in fact , a commencement of that intellectual discipline which forms one of the most important ends of all science . It is the first movement of approach towards that state of mental ...
Page 21
... tion , and constructing at each step a little body of science to meet its exigencies . The difference is that of pioneering a road through an un- traversed country and advancing at ease along a broad and beaten high- way ; that is to ...
... tion , and constructing at each step a little body of science to meet its exigencies . The difference is that of pioneering a road through an un- traversed country and advancing at ease along a broad and beaten high- way ; that is to ...
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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