Outlines of Astronomy |
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Page xii
... exact dimensions . Its form that of equilibrium modified by centrifugal force . Variation of gravity on its surface . Statical and dynamical measures of gravity . The pendulum . Gravity to a spheroid . Other effects of the Earth's ...
... exact dimensions . Its form that of equilibrium modified by centrifugal force . Variation of gravity on its surface . Statical and dynamical measures of gravity . The pendulum . Gravity to a spheroid . Other effects of the Earth's ...
Page 20
... exact inquiry , without which no man can ever make such advances in this or any other of the higher departments of science as can entitle him to form an inde- pendent opinion on any subject of discussion within their range . It is not ...
... exact inquiry , without which no man can ever make such advances in this or any other of the higher departments of science as can entitle him to form an inde- pendent opinion on any subject of discussion within their range . It is not ...
Page 32
... exact distance of two sta- tions which could barely be discerned from each other over the edge of the horizon , we could ascertain the actual size of the earth itself : and , in fact , were it not for the effect of refraction , by which ...
... exact distance of two sta- tions which could barely be discerned from each other over the edge of the horizon , we could ascertain the actual size of the earth itself : and , in fact , were it not for the effect of refraction , by which ...
Page 33
... exact method of ascertaining the dimensions of the earth , yet it will suffice to afford such an approximation to it as shall be of use in the present stage of the reader's knowledge , and help him to many just conceptions , on which ...
... exact method of ascertaining the dimensions of the earth , yet it will suffice to afford such an approximation to it as shall be of use in the present stage of the reader's knowledge , and help him to many just conceptions , on which ...
Page 39
... exact estimation of the amount of atmospheric refraction , or the strict determination of the angle S'A s , by which a celestial object at any assigned altitude , H A S , is raised in appearance above its true place , is , unfortunately ...
... exact estimation of the amount of atmospheric refraction , or the strict determination of the angle S'A s , by which a celestial object at any assigned altitude , H A S , is raised in appearance above its true place , is , unfortunately ...
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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