Outlines of AstronomyBlanchard & Lea, 1856 - 557 стор. |
З цієї книги
Результати 1-5 із 31
Сторінка xii
... right ascension and declination . Celestial objects distinguished into fixed and erratic . Of the constellations . Natural regions in the heavens . The Milky Way . The Zo- diac . Of the ecliptic . Celestial latitudes and longitudes ...
... right ascension and declination . Celestial objects distinguished into fixed and erratic . Of the constellations . Natural regions in the heavens . The Milky Way . The Zo- diac . Of the ecliptic . Celestial latitudes and longitudes ...
Сторінка 66
... right ascension of a heavenly body is the arc of the equinoctial included between a certain point in that circle called the Vernal Equinox , and the point in the same circle to which it is referred by the circle of declination passing ...
... right ascension of a heavenly body is the arc of the equinoctial included between a certain point in that circle called the Vernal Equinox , and the point in the same circle to which it is referred by the circle of declination passing ...
Сторінка 67
... right ascension of an object , if converted into time at the same rate ( since 360 ° being described uniformly in 24 hours , 15 ° must be so described in 1 hour ) , will express the interval of sidereal time which elapses from the ...
... right ascension of an object , if converted into time at the same rate ( since 360 ° being described uniformly in 24 hours , 15 ° must be so described in 1 hour ) , will express the interval of sidereal time which elapses from the ...
Сторінка 75
... right ascension , to give the side- real time of setting or rising , which , if we please , may be converted into solar time by the proper rules and tables . ( 129. ) As another example of the use of the same triangle , we may propose ...
... right ascension , to give the side- real time of setting or rising , which , if we please , may be converted into solar time by the proper rules and tables . ( 129. ) As another example of the use of the same triangle , we may propose ...
Сторінка 87
... right ascension . 2dly , As the fundamental element ( or natural independent variable , to use the lan- guage of geometers ) in all dynamical theories . The great object of as- tronomy is the determination of the laws of the celestial ...
... right ascension . 2dly , As the fundamental element ( or natural independent variable , to use the lan- guage of geometers ) in all dynamical theories . The great object of as- tronomy is the determination of the laws of the celestial ...
Інші видання - Показати все
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