A Treatise on Spherical AstronomyCambridge University Press, 22 d’ag. 2013 - 524 pàgines Spherical or positional astronomy is used primarily to map objects on the celestial sphere. In this technical work, first published in 1908 and intended for advanced students, Sir Robert Stawell Ball (1840-1913) breaks down the field into distinct areas of study. Assuming a good level of geometry and trigonometry, he begins with fundamental formulae before moving into the determination of coordinates, atmospheric refraction, the theory of cartography, and more. Each section contains exercises derived from a variety of sources, including contemporary Cambridge examinations. The coverage ranges from the calculation of stellar parallax to the geometrical principles behind the Mercator projection. Testifying to the knowledge expected of university students in the early twentieth century, Ball's book remains instructive to their modern counterparts. More accessible to the general reader, The Story of the Heavens (1885), Star-Land (1889) and A Popular Guide to the Heavens (1905) are also reissued in this series. |
Continguts
CHAPTER | 1 |
CHAPTER II | 25 |
CHAPTER III | 43 |
CHAPTER IV | 69 |
CHAPTER V | 82 |
CHAPTER VI | 116 |
questions on refraction | 140 |
APPLICATION 115 | 151 |
Exercises on Chapter XI | 275 |
CHAPTER XIII | 297 |
ON THE TRANSIT OF A PLANET ACROSS THE SUN | 312 |
CHAPTER XV | 326 |
CHAPTER XVI | 346 |
CHAPTER XVII | 358 |
CHAPTER XVIII | 376 |
CHAPTER XIX | 383 |
Sun 52 Calculation of elliptic motion 53 Formulae of elliptic | 164 |
CHAPTER VIII | 171 |
CHAPTER IX | 201 |
CHAPTER X | 226 |
THE ABERRATION OF LIGHT | 248 |
body 83 Different kinds of Aberration 84 Aberration in Right | 269 |
PLANETARY PHENOMENA | 407 |
CHAPTER XXI | 431 |
CHAPTER XXII | 458 |
in the graduated circle 155 The errors of division in the graduated | 483 |
493 | |
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Frases i termes més freqüents
aberration angular approximately ascending node assume Astronomy axis azimuth celestial sphere clock coefficient constant coordinates corresponding cos2 cosec culmination decl defined determined direction diurnal diurnal motion earth earth’s centre earth’s orbit earth’s surface eccentricity ecliptic ephemeris equation equatorial equinox error Exam expression figure find first point fixed follows formula geocentric given graduated great circle Greenwich mean Hence horizon horizontal parallax hour angle instrument intersection interval known latitude Math mean distance mean longitude mean noon measured meridian circle moon moon’s motion nole nutation obliquity observer obtain parallel perpendicular planet point of Aries pole position angle precession proper motion quantities radius refraction respectively right ascension rotation semi-diameter Show sidereal day sin2 solstice spherical star Substituting sufficient sun’s supposed tangent telescope transit triangle Trip true true anomaly velocity Venus whence zenith distance zero