Outlines of AstronomyBlanchard & Lea, 1856 - 557 стор. |
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Сторінка xiv
... recess . Cases of an exterior planet disturbed by an interior . The reverse case . In every case the node of the disturbed orbit recedes on the plane of the disturbing on an average . Com- bined effect of many such disturbances . Motion ...
... recess . Cases of an exterior planet disturbed by an interior . The reverse case . In every case the node of the disturbed orbit recedes on the plane of the disturbing on an average . Com- bined effect of many such disturbances . Motion ...
Сторінка 54
... , this apparent advance or recess of one of them , when the eye is kept steadily fixed on the other , would furnish a criterion . In a dark night , for instance , when all intermediate objects 54 OUTLINES OF ASTRONOMY .
... , this apparent advance or recess of one of them , when the eye is kept steadily fixed on the other , would furnish a criterion . In a dark night , for instance , when all intermediate objects 54 OUTLINES OF ASTRONOMY .
Сторінка 173
... recess of others . The bright star of the Lesser Bear , which we call the pole star , has not always been , nor will always continue to be , our cynosure : at the time of the construction of the earliest catalogues it was 12 ° from the ...
... recess of others . The bright star of the Lesser Bear , which we call the pole star , has not always been , nor will always continue to be , our cynosure : at the time of the construction of the earliest catalogues it was 12 ° from the ...
Сторінка 174
... from a change in the plane of the earth's orbit , and has nothing to do with the change in the position of its axis , as re- ferred to the starry sphere . an apparent approach and recess of all the stars in 174 OUTLINES OF ASTRONOMY .
... from a change in the plane of the earth's orbit , and has nothing to do with the change in the position of its axis , as re- ferred to the starry sphere . an apparent approach and recess of all the stars in 174 OUTLINES OF ASTRONOMY .
Сторінка 175
... recess of the equinoctial points , by which , in the same period , both the longitudes and the right ascensions of the stars will be also alternately increased and diminished . ( 322. ) Both these motions , however , although here ...
... recess of the equinoctial points , by which , in the same period , both the longitudes and the right ascensions of the stars will be also alternately increased and diminished . ( 322. ) Both these motions , however , although here ...
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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