Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
З цієї книги
Результати 6-10 із 100
Сторінка 56
... difference of their stations on the appearance of the outward universe as seen from each . As an exterior object seen from one would appear to have shifted its place were the spectator suddenly transported to the other , so two ...
... difference of their stations on the appearance of the outward universe as seen from each . As an exterior object seen from one would appear to have shifted its place were the spectator suddenly transported to the other , so two ...
Сторінка 69
... difference from exact parallelism is so small that it may be practically disregarded . To a spec- tator looking upwards such a system of plumb - lines will ap- pear to converge to his zenith ; downwards , to his nadir . * ( 117. ) So ...
... difference from exact parallelism is so small that it may be practically disregarded . To a spec- tator looking upwards such a system of plumb - lines will ap- pear to converge to his zenith ; downwards , to his nadir . * ( 117. ) So ...
Сторінка 71
... difference of longitudes of the places . ( 122. ) Vice versâ — the interval elapsing between two dif- ferent stars coming on the meridian of one and the same place , expressed in sidereal time , is the measure of the difference of right ...
... difference of longitudes of the places . ( 122. ) Vice versâ — the interval elapsing between two dif- ferent stars coming on the meridian of one and the same place , expressed in sidereal time , is the measure of the difference of right ...
Сторінка 96
... difference will be the angular interval between S and T , as seen from the centre of the circle , at whatever point of the limb the com- mencement of the graduations or the point 0 ° be situated . ( 164. ) The very same result will be ...
... difference will be the angular interval between S and T , as seen from the centre of the circle , at whatever point of the limb the com- mencement of the graduations or the point 0 ° be situated . ( 164. ) The very same result will be ...
Сторінка 100
... difference of the declinations , as also to the difference of the meridian alti- tudes of the objects at least when corrected for refraction . These differences , then , are the angular intervals directly measured by the mural circle ...
... difference of the declinations , as also to the difference of the meridian alti- tudes of the objects at least when corrected for refraction . These differences , then , are the angular intervals directly measured by the mural circle ...
Інші видання - Показати все
Outlines of Astronomy John Frederick William Herschel,Sir John Frederick William Herschel Повний перегляд - 1851 |
Загальні терміни та фрази
angle angular appear apsides ascertained astronomical 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 Edition effect elements ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe heavens heliocentric horizon inclination 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 perturbations planet planetary pole portion position Post 8vo precession proper motions proportion recede recess reckoned refraction respect result revolution right ascension rotation round satellites Saturn seen sidereal sidereal day sidereal period situation solar sphere spherical stars station sun's suppose surface syzygies tangential force telescope tion Uranus variation velocity visible vols whole Woodcuts zenith
Популярні уривки
Сторінка 674 - A Dictionary of Science, Literature, and Art : Comprising the History, Description, and Scientific Principles of every Branch of Human Knowledge ; with the Derivation and Definition of all the Terms in General Use. Edited by WT BRANDE, FRSL and E.