Elements of astronomy, illustrated by problems on the globes, and adapted for the use of young persons, with a set of questions for examinationLongman, Rees, Orme, & Company, 1828 - 182 страници |
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Страница vii
... remarkable Points and Circles of the Celestial Sphere ..... CHAPTER III . Of Altitude , Azimuth , and Amplitude . PAGE 1 10 14 CHAPTER IV . Of the Figure and Magnitude of the Earth .... 17 CHAPTER V. Of the Diurnal Motion of the Earth ...
... remarkable Points and Circles of the Celestial Sphere ..... CHAPTER III . Of Altitude , Azimuth , and Amplitude . PAGE 1 10 14 CHAPTER IV . Of the Figure and Magnitude of the Earth .... 17 CHAPTER V. Of the Diurnal Motion of the Earth ...
Страница 6
... remarkable differ- ence in the motions of the stars according to the direc- tion in which we look . Looking in one direction , to- wards the south , we observe some stars which just make their appearance above the horizon , attain a ...
... remarkable differ- ence in the motions of the stars according to the direc- tion in which we look . Looking in one direction , to- wards the south , we observe some stars which just make their appearance above the horizon , attain a ...
Страница 7
... remarkable star , ) and another hemisphere of stars would appear performing in like manner their circuits round it . The general appearance , therefore , of the starry heavens , is that of a vast concave sphere turning round two fixed ...
... remarkable star , ) and another hemisphere of stars would appear performing in like manner their circuits round it . The general appearance , therefore , of the starry heavens , is that of a vast concave sphere turning round two fixed ...
Страница 9
... remarkable groups called the Hyades and the Pleiades , Gemini , Leo , Auriga , Bootes , Corona Bo- realis , Cassiopeia , & c . Besides being distributed into constellations , the stars are further distinguished according to their dif ...
... remarkable groups called the Hyades and the Pleiades , Gemini , Leo , Auriga , Bootes , Corona Bo- realis , Cassiopeia , & c . Besides being distributed into constellations , the stars are further distinguished according to their dif ...
Страница 10
... REMARKABLE POINTS AND CIRCLES OF THE CELES- TIAL SPHERE . THE celestial globe , besides presenting this general plan of the stars , has marked upon it several points and circles , the use of which I now proceed to ex- plain . From ...
... REMARKABLE POINTS AND CIRCLES OF THE CELES- TIAL SPHERE . THE celestial globe , besides presenting this general plan of the stars , has marked upon it several points and circles , the use of which I now proceed to ex- plain . From ...
Често срещани думи и фрази
23 degrees additional day altitude angle aphelion appear ascer ascertained Astronomy called cause celestial globe celestial sphere centre CHAP CHAPTER computation conjunction constellations diameter difference direction distance diurnal motion earth moves earth's axis earth's orbit east eastward eclipses equal equator equinoctial points equinox exactly fall fixed stars gravitation heavenly bodies heavens hemisphere Hence horizon inclined inferior planets Julian calendar Julius Cæsar Jupiter latitude leap learner length Libra light longitude magnitude means meridian miles minutes month moon's orbit night node noon observed opposite parallax period perpendicular pole PROBLEM projectile force reason reckoned represent the earth's respect retrograde motion revolve round right ascension rise round the earth round the sun Saturn seen side Sidereal sidereal day situation solar day solar eclipse stationary sun's apparent sun's place Superior Planets supposed surface Synodical Month terrestrial globe tides tion tropic Venus visible westward wooden circle
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Страница 133 - One sun by day, by night ten thousand shine ; And light us deep into the DEITY. How boundless in magnificence and might ! O what a confluence of ethereal fires, From urns unnumber'd, down the steep of heaven, Streams to a point, and centres in my sight ! Nor tarries there ; I feel it at my heart. My heart, at once, it humbles, and exalts; Lays it in dust, and calls it to the skies.
Страница 46 - He conceived that the celestial spheres in which the planets move, striking upon the ether through which they pass, must produce a sound ; and that this sound must vary according to the diversity of their magnitude, velocity, and relative distance. Taking it for granted that every...
Страница 120 - That the planets all move in elliptic orbits, of which the sun occupies one of the foci. 3. That the squares of the times of the revolutions of the planets are as the cubes of their mean distances from the sun.
Страница 132 - The empyreal waste, where happy spirits hold, Beyond this concave heaven, their calm abode ; And fields of radiance, whose unfading light Has travelled the profound six thousand years, Nor yet arrives in sight of mortal things.
Страница 20 - ... fallacy, and reasoning upon it with the same confidence as if it were true. On the 9th of June we sailed from Arica, and steered along shore to the north-west. In the evening of that day we had a fine view of the Cordillera, or highest ridge of the mountains, not less than between eighty and a hundred miles off. It was only when the ship was at a considerable distance from the shore that the higher Andes came in sight ; for when near to it, the lower ranges, themselves of great height, intercepted...
Страница 46 - ... sound must vary according to the diversity of their magnitude, velocity, and relative distance. Taking it for granted, that every thing respecting the heavenly bodies is adjusted with perfect regularity, he further imagined, that all the circumstances necessary to render the sounds produced by their motion harmonious, were fixed in such exact proportions, that the most perfect harmony is produced by their revolutions. This fanciful doctrine respecting the music of the spheres gave rise to the...
Страница 139 - The little derangements which affect the motion of the heavenly bodies are apparent only to the eye of the astronomer ; and even these, after reaching a certain limit, gradually diminish, till the system, regaining its balance, returns to that state of harmony and order which preceded the commencement of these secular irreyularitiis.
Страница 139 - System of Astronomy, by Mr. Vince, Plumian Professor of Astronomy and Experimental Philosophy. The fifth edition of an Analysis of the Greek Metres, by Dr. Scale. A Confutation of Atheism, from the Laws and Constitution of the Heavenly Bodies, by Professor Vince.
Страница 111 - ... demonstrated respecting motion in circular orbits. The planets then and their satellites being known by Kepler's laws to move in elliptical orbits, and to describe round the sun in one focus areas proportional to the times by their radii vectores drawn to that focus, and it being further found by those laws that the squares of their periodic times are as...
Страница 96 - Venus, the next in order to Mercury, is the most brilliant of all the planets. When visible before sunrise, she was called by the ancients Phosphorus, Lucifer, or the Morning Star, and when she shone in the evening after sunset, Hesperus, Vesper, or the Evening Star. She presents the same appearances as Mercury. Owing, however, to the greater diameter of her orbit, her apparent oscillations are nearly 48° east and west of the sun,* or about 18° more than those of Mercury. She is therefore...