Meteoric Astronomy: A Treatise on Shooting-stars, Fire-balls, and AerolitesJ.B. Lippincott & Company, 1867 - 129 páginas |
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Meteoric astronomy: A treatise on shooting-stars, fire-balls, and aerolites Daniel Kirkwood Vista previa limitada - 2022 |
Términos y frases comunes
13th of July aerolitic falls aphelion appeared April asteroids astronomers atmos atmosphere August 10th Biela's comet bodies bolide CHAPTER comet DANIEL KIRKWOOD density diameter earth earth's atmosphere earth's orbit earth's surface eccentric ecliptic elements elliptical explosion fact fall of meteoric fire-ball was seen fragments greater interval Jupiter known Laplace large meteor lunar magnitude mean distance Mercury meteor was seen meteoric epoch meteoric mass meteoric matter meteoric ring meteoric stones fell meteoric theory meteorites miles minor planets moon motion moving naked eye nearly nebular hypothesis Newton night node November 13th November meteors number of meteoric o'clock observed orbital revolution origin particles perihelion period perturbation phenomena phenomenon planetary planets portion pounds primitive ring probable Prof Professor Quetelet's Catalogue regard remark revolving rings of Saturn round the sun satellites shooting-stars shower Silliman's Journal solar heat solar system stars sun's tion Uranus variable stars velocity visible weighing zodiacal light zone
Pasajes populares
Página 19 - Bonpland relates, that from the beginning of the phenomenon, there was not a space in the firmament equal in extent to three diameters...
Página 125 - As the sun in his progressive motion approaches a cometary group, the latter must, by reason of his attraction, move toward the centre of our system, the nearer members with greater velocity than the more remote. Those of the same cluster would enter the solar domain at periods not very distant from each other — the forms of their orbits depending upon their original relative positions with reference to the sun's course, and also on planetary perturbation.
Página 46 - The last sounds seemed to come from a point in the southeast forty-five degrees below the zenith. The result of this cannonading was the falling of a large number of stony meteorites upon an area of about ten miles long by three wide. The sky was cloudy, but some of the stones were seen first as " black specks," then as " black birds," and finally falling to the ground.
Página 91 - With regard to the store of chemical force in the sun, we can form no conjecture, and the store of heat there existing can only be determined by very uncertain estimations. If, however, we adopt the very probable view, that the remarkably small density of so large a body is caused by its high temperature, and may become greater in time, it may be calculated that if the diameter of the sun were diminished only the tenthousandth part of its present length, by this act a sufficient quantity of heat...
Página 19 - Towards the morning of the 13th of November, 1799, we witnessed a most extraordinary scene of shooting meteors. Thousands of bodies and falling stars succeeded each other during four hours. Their direction was very regular from north to south. From the beginning of the phenomenon there was not a space in the firmament equal in extent to three diameters of the moon which was not filled every instant with bodies or falling stars. All the meteors left luminous traces or phosphorescent bands behind them,...
Página 41 - Several persons heard the report of an explosion in the air, followed by a hissing sound ; and afterwards felt a shock, as if a heavy body had fallen to the ground at a little distance from them. One of these, a ploughman, saw a huge stone falling towards the earth, eight or nine yards from the place where he stood. It threw up the mould on every side, and after penetrating through the soil...
Página 18 - From midnight onwards, all the stars moved from the east to the west ; and, after being together, they began to move, some in one direction, and others in another. And afterwards they fell from the sky in such numbers, and so thickly together, that as they descended low in the air they seemed large and fiery, and the sky and the air seemed to be in flames, and even the Earth appeared ready to take fire.