Outlines of astronomy |
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Page xxii
... produced only by the tangential force . Lagrange's theorem of the conservation of the mean distances and periods . Theory of the Perihelia and excentricities . Geometri- cal representation of their momentary variations . Estimation of ...
... produced only by the tangential force . Lagrange's theorem of the conservation of the mean distances and periods . Theory of the Perihelia and excentricities . Geometri- cal representation of their momentary variations . Estimation of ...
Page 4
... produced . We shall not , then , reject the analytic course where it leads more easily and directly to our objects , or in any way fetter ourselves by a rigid adherence to method . Writing only to be understood , and to communicate as ...
... produced . We shall not , then , reject the analytic course where it leads more easily and directly to our objects , or in any way fetter ourselves by a rigid adherence to method . Writing only to be understood , and to communicate as ...
Page 11
... produced , and established by legitimate reasoning , form the assemblage of objects to which the attention of the astronomer is directed . The term astronomy itself , which denotes the law or rule of the astra ( by which the ancients ...
... produced , and established by legitimate reasoning , form the assemblage of objects to which the attention of the astronomer is directed . The term astronomy itself , which denotes the law or rule of the astra ( by which the ancients ...
Page 14
... produce no sensations of shocks or jerks , might , it is very evident , subsist undetected by us . There is no ... produced , as the laws of mechanics teach us , by sudden and powerful forces acting during short times ; and these ...
... produce no sensations of shocks or jerks , might , it is very evident , subsist undetected by us . There is no ... produced , as the laws of mechanics teach us , by sudden and powerful forces acting during short times ; and these ...
Page 27
... produces a false impression respecting their places , which must be rectified by ascertaining the amount and direction of the displacement so apparently produced on each , before we can come at a knowledge of the true directions in ...
... produces a false impression respecting their places , which must be rectified by ascertaining the amount and direction of the displacement so apparently produced on each , before we can come at a knowledge of the true directions in ...
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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 Edition effect epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity heavens heliocentric hemisphere horizon inclination inequality instance instrument interval Julian period 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 proper motions proportion recede reckoned refraction remarkable respect result revolution revolving right ascension 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 vols whole zenith