Elementary Lessons in AstronomyMacmillan, 1876 - 348 Seiten |
Inhalt
| 142 | |
| 156 | |
| 165 | |
| 182 | |
| 190 | |
| 198 | |
| 207 | |
| 218 | |
| 71 | |
| 77 | |
| 83 | |
| 95 | |
| 102 | |
| 111 | |
| 123 | |
| 130 | |
| 136 | |
| 227 | |
| 233 | |
| 249 | |
| 258 | |
| 268 | |
| 289 | |
| 293 | |
| 302 | |
| 325 | |
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
angle apparent motion appear astronomers atmosphere attraction base line Boötes bright called Cassiopea celestial equator celestial pole celestial sphere centre circle clock colour comet constellation determined diameter direction Earth Earth's rotation Earth's surface ecliptic equal equatorial exactly eye-piece fact globe Greenwich heat heavenly bodies heavens horizon inclined instance Jupiter latitude length lens LESSON light longitude magnitude Mars mass measured meridian meteors miles Milky Moon Moon's naked eye nearest nearly nebulæ Neptune night node object-glass observed occupied orbit parallax path photosphere planet point of Aries polar pole portion position prism rays refraction represent revolution revolving round right ascension ring round the Sun satellites Saturn seen shadow side sidereal solar day solstice spectrum spots stars Sun's suppose telescope tion transit travel round triangle true sun Uranus Ursa Ursa Major vapour variable variable stars varies velocity Venus vernal equinox visible
Beliebte Passagen
Seite 15 - The Ram, the Bull, the Heavenly Twins, And next the Crab, the Lion shines, The Virgin and the Scales, The Scorpion, Archer, and He-goat, The Man that bears the watering-pot, And Fish with glittering tails.
Seite 121 - We see it as Columbus saw America from the shores of Spain. Its movements have been felt, trembling along the far-reaching line of our analysis, with a certainty hardly inferior to that of ocular demonstration.
Seite 60 - Earth also a pea, on a circle of 430 feet; Mars a rather large pin's head, on a circle of 654 feet; Juno, Ceres, Vesta, and Pallas, grains of sand, in orbits of from 1000 to 1200 feet; Jupiter a moderate-sized orange, in a circle nearly half a mile across; Saturn a small orange, on a circle of four-fifths of a mile...
Seite 298 - Every particle of matter, in the universe, attracts every other particle with a force, which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Seite 203 - Sidereal Time at Mean Noon is the angular distance of the first point of Aries, or the true vernal equinox, from the meridian, at the instant of mean noon : it is therefore the Right Ascension of the mean Sun...
Seite 103 - Almost directly preceding, or at 270°, appeared a bluntly triangular pink body, suspended, as it were, in the corona. This was separated from the moon's edge when first seen, and the separation increased as the moon advanced. It had the appearance of a large conical protuberance, whose base was hidden by some intervening soft and ill-defined substance, like the upper part of a conical mountain, the lower portion of which was obscured by clouds or thick mist. I think the apex of this object must...
Seite 143 - ... the most remote condition of which we have positive evidence was that of small, detached, melted globules, the formation of which cannot be explained in a satisfactory manner, except by supposing that their constituents were originally in the state of vapour, as they now exist in the atmosphere of the Sun ; and, on the temperature becoming lower, condensed into these
Seite 28 - A community of matter appears to exist throughout the visible universe, for the stars contain many of the elements which exist in the sun and earth. It is remarkable that the elements most widely diffused through the host of stars are some of those most closely connected with the living organisms of our globe, including hydrogen, sodium, magnesium, and iron.
Seite 103 - A red protuberance, of vivid brightness and very deep tint, arose to a height of, perhaps, l£' when first seen, and increased in length to 2', or more, as the Moon's progress revealed it more completely. In shape it somewhat resembled a Turkish citneter, the northern edge being convex, and the southern concave.