Outlines of Astronomy |
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Page xii
... distance concluded . Its apparent orbit an ellipse about the focus . Law of the angular velocity . Equable description of areas . Parallax of the Sun. Its distance and magnitude . Copernican explanation of the Sun's apparent motion ...
... distance concluded . Its apparent orbit an ellipse about the focus . Law of the angular velocity . Equable description of areas . Parallax of the Sun. Its distance and magnitude . Copernican explanation of the Sun's apparent motion ...
Page xv
... distance of the fixed stars . annual parallax . Parallactic unit of sidereal distance . Effect of parallax analogous to that of aberration . How distinguished from it . Detection of parallax by meridional observations . Henderson's ...
... distance of the fixed stars . annual parallax . Parallactic unit of sidereal distance . Effect of parallax analogous to that of aberration . How distinguished from it . Detection of parallax by meridional observations . Henderson's ...
Page 28
... distance and mist , but termi- nated by a sharp , clear , well - defined line or offing as it is called , which runs all round us in a circle , having our station for its centre . That this line is really a circle , we conclude , first ...
... distance and mist , but termi- nated by a sharp , clear , well - defined line or offing as it is called , which runs all round us in a circle , having our station for its centre . That this line is really a circle , we conclude , first ...
Page 31
... distance , or from atmospheric indis- tinctness . It will be worth while to pursue the general notion thus acquired into some of its consequences , by which its consistency with observations of a different kind , and on a larger scale ...
... distance , or from atmospheric indis- tinctness . It will be worth while to pursue the general notion thus acquired into some of its consequences , by which its consistency with observations of a different kind , and on a larger scale ...
Page 32
... distance TE is not so great as to have prevented an equally perfect view of the whole . ( 26. ) The history of aƫronautic adventure affords a curious illustration of the same principle . The late Mr. Sadler , the celebrated aƫronaut ...
... distance TE is not so great as to have prevented an equally perfect view of the whole . ( 26. ) The history of aƫronautic adventure affords a curious illustration of the same principle . The late Mr. Sadler , the celebrated aƫronaut ...
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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