Outlines of Astronomy |
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Page xii
... excentricity and inclination . Motion of its nodes and apsides . Of occultations and solar eclipses generally . Limits within which they are possible . They prove the Moon to be an opaque solid . Its light derived from the Sun. Its ...
... excentricity and inclination . Motion of its nodes and apsides . Of occultations and solar eclipses generally . Limits within which they are possible . They prove the Moon to be an opaque solid . Its light derived from the Sun. Its ...
Page xiv
... excentricity . Experimental illustration . Application of the foregoing principles to the planetary theory . Compensation in orbits very nearly cir- cular . Effects of ellipticity . General results . Lagrange's theorem of the stability ...
... excentricity . Experimental illustration . Application of the foregoing principles to the planetary theory . Compensation in orbits very nearly cir- cular . Effects of ellipticity . General results . Lagrange's theorem of the stability ...
Page 82
... excentricity lies , will appear by that frac- tional amount too small , and all on the opposite side too large . And , 2dly , that whatever be the amount of the excentricity , and on whatever part of the circle any proposed angle is ...
... excentricity lies , will appear by that frac- tional amount too small , and all on the opposite side too large . And , 2dly , that whatever be the amount of the excentricity , and on whatever part of the circle any proposed angle is ...
Page 150
... excentricity of the centre of mo- tion of the hands ; and 3dly , if we were fully acquainted with all the mechanism which put the hands in motion , so as to be able to say at every instant what were their velocity of movement , and so ...
... excentricity of the centre of mo- tion of the hands ; and 3dly , if we were fully acquainted with all the mechanism which put the hands in motion , so as to be able to say at every instant what were their velocity of movement , and so ...
Page 186
... excentricity amount- ing to 0.01679 of the mean distance , which may be regarded as our unit of measure in this inquiry . But besides this , the form of the orbit is not circular , but elliptic . If from any point O , taken to represent ...
... excentricity amount- ing to 0.01679 of the mean distance , which may be regarded as our unit of measure in this inquiry . But besides this , the form of the orbit is not circular , but elliptic . If from any point O , taken to represent ...
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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