Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
З цієї книги
Результати 6-10 із 100
Сторінка 41
... respect of the parts of them which lie above the horizon . Some , which lie towards the quarter of the horizon which is denominated the SOUTH * , only remain for a short time above * We suppose our observer to be stationed in some ...
... respect of the parts of them which lie above the horizon . Some , which lie towards the quarter of the horizon which is denominated the SOUTH * , only remain for a short time above * We suppose our observer to be stationed in some ...
Сторінка 43
... respect to the horizon ; and those towards the north , when in the course of their diurnal move- ment they pass alternately above and below that common centre of motion described in the last article , become actually inverted with respect ...
... respect to the horizon ; and those towards the north , when in the course of their diurnal move- ment they pass alternately above and below that common centre of motion described in the last article , become actually inverted with respect ...
Сторінка 45
... respect to them in the concave of the heavens among the stars ; but this point itself will become gradually depressed with respect to the spectator's horizon . The axis , in short , about which the diurnal motion is performed , will ...
... respect to them in the concave of the heavens among the stars ; but this point itself will become gradually depressed with respect to the spectator's horizon . The axis , in short , about which the diurnal motion is performed , will ...
Сторінка 47
... respect to ourselves when we are in motion among them , but they appear to move one among the other they shift their relative apparent places . Let any one travelling rapidly along a high road fix his eye steadily on any ob- ject , but ...
... respect to ourselves when we are in motion among them , but they appear to move one among the other they shift their relative apparent places . Let any one travelling rapidly along a high road fix his eye steadily on any ob- ject , but ...
Сторінка 48
... respect to one another , arising from a motion of the spectator , is called a parallactic motion . To see the reason of it we must consider that the position of every object is referred by us to the surface of an imaginary sphere of an ...
... respect to one another , arising from a motion of the spectator , is called a parallactic motion . To see the reason of it we must consider that the position of every object is referred by us to the surface of an imaginary sphere of an ...
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.