Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
З цієї книги
Результати 1-5 із 100
Сторінка 14
... suppose it to have made its way through the substance of the earth . It must , therefore , have gone under it , and that not by a mere subterraneous channel ; for if we notice the points where it sets and rises for many successive days ...
... suppose it to have made its way through the substance of the earth . It must , therefore , have gone under it , and that not by a mere subterraneous channel ; for if we notice the points where it sets and rises for many successive days ...
Сторінка 16
... Suppose the earth to be represented by the sphere LHNQ , whose centre is C , and let A , G , M be stations at different elevations above various points of its surface , represented by a , g , m respectively . From each of them ( as from ...
... Suppose the earth to be represented by the sphere LHNQ , whose centre is C , and let A , G , M be stations at different elevations above various points of its surface , represented by a , g , m respectively . From each of them ( as from ...
Сторінка 18
... Suppose , then , that at our stati M we were to adjust a line ( a wooden ruler for instance ) a spirit - level , with perfect exactness ; then , if we suppose t direction of this line indefinitely prolonged both ways , XMY , the line so ...
... Suppose , then , that at our stati M we were to adjust a line ( a wooden ruler for instance ) a spirit - level , with perfect exactness ; then , if we suppose t direction of this line indefinitely prolonged both ways , XMY , the line so ...
Сторінка 18
... Suppose , then , that at our station M we were to adjust a line ( a wooden ruler for instance ) by a spirit - level , with perfect exactness ; then , if we suppose the direction of this line indefinitely prolonged both ways , as XMY ...
... Suppose , then , that at our station M we were to adjust a line ( a wooden ruler for instance ) by a spirit - level , with perfect exactness ; then , if we suppose the direction of this line indefinitely prolonged both ways , as XMY ...
Сторінка 19
... Suppose a ship , for instance , to sail directly away from our station ; at first , when the distance of the ship is small , a spectator , S , situated at some certain height above the sea , sees the whole of the ship , even to the ...
... Suppose a ship , for instance , to sail directly away from our station ; at first , when the distance of the ship is small , a spectator , S , situated at some certain height above the sea , sees the whole of the ship , even to the ...
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.