Practical Astronomy and Geodesy: including the projections of the Sphere and Spherical TrigonometryLongman, Brown, Green and Longmans, 1845 |
From inside the book
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Page xxi
... interval being given in solar time - 315. Reduction to solar time , of the angle at the pole between the meridian of a station and a horary circle passing through the sun , a fixed star , the moon or a planet ; with an example CHAP . XV ...
... interval being given in solar time - 315. Reduction to solar time , of the angle at the pole between the meridian of a station and a horary circle passing through the sun , a fixed star , the moon or a planet ; with an example CHAP . XV ...
Page xxiii
... interval between the observations 356. Conditions favourable to the accuracy of the computed latitude in this problem - - 357. Methods of determining the latitude by two altitudes of a celestial body with the interval in azimuth ; and ...
... interval between the observations 356. Conditions favourable to the accuracy of the computed latitude in this problem - - 357. Methods of determining the latitude by two altitudes of a celestial body with the interval in azimuth ; and ...
Page xxvi
... intervals between the perpendiculars let fall on it from the stations 408. Processes for measuring a degree of a great circle perpendi- cular to the meridian , and a degree on a parallel of geo- graphical latitude - 409. Method of ...
... intervals between the perpendiculars let fall on it from the stations 408. Processes for measuring a degree of a great circle perpendi- cular to the meridian , and a degree on a parallel of geo- graphical latitude - 409. Method of ...
Page 4
... interval between mid - winter and mid - summer , or between mid - summer and mid - winter : it may be observed also , that the greatest elevation of any star , which , rising in the east and setting in the west , appears to describe ...
... interval between mid - winter and mid - summer , or between mid - summer and mid - winter : it may be observed also , that the greatest elevation of any star , which , rising in the east and setting in the west , appears to describe ...
Page 6
... interval between the disappearance in the west and the next appearance in the east , both planets are occasionally , by the aid of the telescope , seen to pass like dark spots across the disk of the sun ; the telescope moreover shows ...
... interval between the disappearance in the west and the next appearance in the east , both planets are occasionally , by the aid of the telescope , seen to pass like dark spots across the disk of the sun ; the telescope moreover shows ...
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Common terms and phrases
aberration altitude angular distance apparent ascension and declination astronomical axis azimuth bisected celestial body celestial sphere centre circle colatitude computed considered correction corresponding cotan degrees described determined diameter difference disk earth ecliptic ellipse equal equator equatorial equinoctial point error expressed fixed star formula given Greenwich heliocentric horary horizontal parallax hour angle instant instrument interval latitude latter let fall mean meridian micrometer moon moon's motion movement Nautical Almanac nearly node noon nutation obliquity observed obtained P'PR parallax parallel perihelion perpendicular plane passing polar distance pole position projection radius vector refraction represented revolution revolve right angles right ascension satellite screw sector semidiameter sidereal sidereal clock sine solar sphere spherical triangle star's station subtracted sun's supposed surface tangent telescope transit transit telescope Trigon variation vertical wire zenith distance zero