Outlines of AstronomyBlanchard & Lea, 1856 - 557 стор. |
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Сторінка xv
... distance of the fixed stars . Their 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 ...
... distance of the fixed stars . Their 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 ...
Сторінка 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 ...
Сторінка 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 ...
Сторінка 33
... distance of the stations inconsiderable in com- parison with the size of the earth , the solution alluded to is contained in the following proposition : - The earth's diameter bears the same proportion to the distance of the visible ...
... distance of the stations inconsiderable in com- parison with the size of the earth , the solution alluded to is contained in the following proposition : - The earth's diameter bears the same proportion to the distance of the visible ...
Сторінка 44
... distance from the eye , yet we lay them all down in a picture on one plane , and at one distance , in their actual apparent proportions , and the likeness is not taxed with incorrectness , though a man in the foreground should be ...
... distance from the eye , yet we lay them all down in a picture on one plane , and at one distance , in their actual apparent proportions , and the likeness is not taxed with incorrectness , though a man in the foreground should be ...
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Outlines of Astronomy John Frederick William Herschel,Sir John Frederick William Herschel Повний перегляд - 1851 |
Загальні терміни та фрази
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 elements ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity 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 render 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