Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка viii
... satellites during the preparation of these sheets for the press . Among them is one whose discovery must ever be regarded as one of the noblest triumphs of theory . In the account here given of this discovery , I trust to have expressed ...
... satellites during the preparation of these sheets for the press . Among them is one whose discovery must ever be regarded as one of the noblest triumphs of theory . In the account here given of this discovery , I trust to have expressed ...
Сторінка xiii
... SATELLITES . - 275 Of the Moon , as a satellite of the Earth . General proximity of satellites to their primaries , and consequent subordination of their motions . Masses of the primaries concluded from the periods of their satellites ...
... SATELLITES . - 275 Of the Moon , as a satellite of the Earth . General proximity of satellites to their primaries , and consequent subordination of their motions . Masses of the primaries concluded from the periods of their satellites ...
Сторінка xv
... satellites . Of the tides . Masses of disturbing bodies deducible from the perturbations they produce . Mass of the Moon , and of Jupiter's satellites , how ascertained . Perturbations of Uranus resulting in the discovery of Neptune ...
... satellites . Of the tides . Masses of disturbing bodies deducible from the perturbations they produce . Mass of the Moon , and of Jupiter's satellites , how ascertained . Perturbations of Uranus resulting in the discovery of Neptune ...
Сторінка xvi
... of the Orbits of the Satellites , so far as they are known - 647 · • 649 IV . Elements of Periodical Comets at their last Appearance - 652 INDEX - 653 OUTLINES OF ASTRONOM Y. INTRODUCTION . ( 1. ) EVERY xvi CONTENTS .
... of the Orbits of the Satellites , so far as they are known - 647 · • 649 IV . Elements of Periodical Comets at their last Appearance - 652 INDEX - 653 OUTLINES OF ASTRONOM Y. INTRODUCTION . ( 1. ) EVERY xvi CONTENTS .
Сторінка 162
... satellites , of which we shall speak more at large when we come to treat of those bodies . Every such eclipse is an event which possesses one great advantage in its appli- cability to the purpose in question , viz . that the time of its ...
... satellites , of which we shall speak more at large when we come to treat of those bodies . Every such eclipse is an event which possesses one great advantage in its appli- cability to the purpose in question , viz . that the time of its ...
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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 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 effect elements ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity greater heavens heliocentric horizon inclination increase inequality instance instrument interval Jupiter latitude latter length 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 precession precisely proper motions proportion recede recess reckoned refraction remarkable 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
Популярні уривки
Сторінка 224 - Aries, Taurus, Gemini, Cancer,, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricornus, Aquarius, Pisces.
Сторінка 268 - that every particle of matter in the universe attracts every other particle, with a force whose direction is that of the line joining the two, and whose magnitude is directly as the product of their masses, and inversely as the square of their distances from each other.
Сторінка 237 - The sun's rays are the ultimate source of almost every motion which takes place on the surface of the earth. By its heat are produced all winds, and those disturbances in the electric equilibrium of the atmosphere which give rise to the phenomena of lightning, and probably also to terrestrial action and the aurora.
Сторінка 59 - Ocean, the first thing which strikes us is, that, the north-east and south-east monsoons, which are found the one on the north and the other on...
Сторінка 268 - Every particle of matter in the universe attracts every other particle with a force directly proportioned to the mass of the attracting particle, and inversely to the square of the distance between them...
Сторінка 537 - In such cases it is equally impossible not to perceive that we are looking through a sheet of stars nearly of a size, and of no great thickness compared with the distance which separates them from us. Were it otherwise we should be driven to suppose the more distant stars uniformly the larger, so as to compensate by their greater intrinsic brightness for their greater distance, a supposition contrary to all probability.
Сторінка 555 - It appears about twelve times in eleven years, — or, more exactly, in a period of 334 days ; remains at its greatest brightness about a fortnight, being then, on some occasions, equal to a large star of the second magnitude ; decreases during about three months, till it becomes completely invisible...
Сторінка 576 - Uranus and Saturn about the sun; and the correspondence between their calculated and observed places in such very elongated ellipses must be admitted to carry with it proof of the prevalence of the Newtonian law of gravity in their systems, of the very same nature and cogency as that of the calculated and observed places of comets round the central body of our own.
Сторінка 22 - Now, as there is no entire continent, or even any very extensive tract of land, known, whose general elevation above the sea is any thing like half this quantity, it follows, that if we would construct...
Сторінка 259 - What is, moreover, extremely singular in the geology of the moon is, that although nothing having the character of seas can be traced, (for the dusky spots which are commonly called seas, when closely examined, present appearances incompatible with the supposition of deep water,) yet there are large regions perfectly level, and apparently of a decided alluvial character.