The World of Comets |
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Page vii
... law of the stars . In like manner our sun moves through space and compels the earth to follow . He bears along with him , in this voyage through the boundless ether , the globes which form his cortége and gravitate about his enormous ...
... law of the stars . In like manner our sun moves through space and compels the earth to follow . He bears along with him , in this voyage through the boundless ether , the globes which form his cortége and gravitate about his enormous ...
Page viii
... law of gravitation . They remain , therefore , isolated like the sun , separated from other sidereal systems by distances so enormous that the mind is powerless to conceive of them . A relation , however , exists between our system and ...
... law of gravitation . They remain , therefore , isolated like the sun , separated from other sidereal systems by distances so enormous that the mind is powerless to conceive of them . A relation , however , exists between our system and ...
Page ix
... law . For the ancients , and the world in general during the Middle Ages , and even during the Renaissance , they were objects of fear , miraculous apparitions , signs the precursors of terrible calamities , flaming symbols of the ...
... law . For the ancients , and the world in general during the Middle Ages , and even during the Renaissance , they were objects of fear , miraculous apparitions , signs the precursors of terrible calamities , flaming symbols of the ...
Page x
... laws . as those which govern the movements of the planets . These vagabonds of the sky have testified , some by their regular motion , others by their return at the predicted dates , their submission to the laws of celestial mechanics ...
... laws . as those which govern the movements of the planets . These vagabonds of the sky have testified , some by their regular motion , others by their return at the predicted dates , their submission to the laws of celestial mechanics ...
Page xvii
... laws of the planetary movements - Newton discovers the true system of cometary orbits - Halley and the comet of 1682 ; prediction of its return CHAPTER III . THE MOTIONS AND ORBITS OF COMETS . SECTION I. COMETS PARTICIPATE IN THE ...
... laws of the planetary movements - Newton discovers the true system of cometary orbits - Halley and the comet of 1682 ; prediction of its return CHAPTER III . THE MOTIONS AND ORBITS OF COMETS . SECTION I. COMETS PARTICIPATE IN THE ...
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Common terms and phrases
according action amongst ancient aphelion apparition Arago astronomers atmosphere axis believe Biela's comet bolides bright bright bands brilliant calculated cause celestial bodies century Coggia's comet cometary orbits cometary tails curve described diameter direction diurnal motion Donati's comet earth eccentricity elliptic orbit Encke Encke's comet Ephorus epoch fact Faye globe gravitation Halley Halley's comet heat heavens hyperbolic hypothesis ideas inclination influence John Herschel July Jupiter Kepler law of Kepler laws less light longitude luminous mass matter mean distance meteors moon motion move movement Myndus nearly nebulosity Newton node November nucleus number of comets observed opinion parabolic orbit passed perihelion distance perihelion passage periodical comets perturbations phenomena physical Pingré planetary planets portion position prediction presage rays regarded region remarkable repulsive force retrograde revolution SECTION seen Seneca solar system space stars supposed telescope theory tion velocity visible whilst Winnecke Yvon Villarceau
Popular passages
Page 479 - We could tell, for example, the number of degrees which this amount of heat would impart to a globe of water equal to the earth in size. Mayer and...
Page 512 - A combustion irresistible, all devouring, omni-prevalent, immediate ; — the entire fulfilment, in all their minute and terrible details, of the fiery and horror-inspiring denunciations of the prophecies of the Holy Book. ' Why need I paint, Charmion, the now disenchained frenzy of mankind ? That tenuity in the comet which had previously inspired us with hope, was now the source of the bitterness of despair. In its impalpable gaseous character we clearly perceived the consummation of Fate. Meantime...
Page 26 - So spake the grisly terror, and in shape, So speaking: and so threatening, grew tenfold More dreadful and deform : on the other side, Incensed with indignation, Satan stood Unterrified, and like a comet burned, That fires the length of Ophiuchus huge In the arctic sky, and from his horrid hair Shakes pestilence and war.
Page 265 - I could only get four comparisons with an anonymous star, it had moved forward 2"~5 in four minutes, and that settled its being the right object. I recorded it as " Circular; bright, with a decided nucleus, but no tail, and about 45
Page 102 - Wherefore if according to what we have already said it should return again about the year 1758, candid posterity will not refuse to acknowledge that this was first discovered by an Englishman.
Page 12 - Seneca also expressed the opinion that some comets portend mischief: ' Some comets,' he said, 'are very cruel and portend the worst misfortunes ; they bring with them and leave behind them the seeds of blood and slaughter.
Page 265 - Just about 17|h. mean time a brief blue space enabled me to find Biela, and though I could only get four comparisons with an anonymous star, it had moved forward 2.5 s.
Page 457 - Je viens vous annoncer une grande nouvelle. Nous l'avons en dormant, Madame, échappé belle : Un monde près de nous a passé tout du long, Est chu tout au travers de notre tourbillon; Et s'il eût en chemin rencontré notre terre, Elle eût été brisée en morceaux comme verre.
Page 349 - When the slit was brought back past the nucleus on to the commencement of the tail, the gaseous spectrum became rapidly fainter, until, at a short distance from the nucleus, the continuous spectrum predominated so strongly that the middle band only, which is the brightest, could be detected on it. We have presented to us, therefore, by the light of the comet three spectra : — 1. The spectrum of bright bands. 2. The continuous spectrum of the nucleus. 3. The continuous spectrum which accompanies...
Page 475 - We see why the animals and plants of the south may have existed in the climates of the north, where their relics and impressions are still to be found. Lastly, it explains the short period of the existence of the moral world, whose earliest monuments do not go much farther back than three thousand years.