Practical Astronomy and Geodesy: Including the Projections of the Sphere and Spherical Trigonometry. For the Use of the Royal Military CollegeLongman, Brown, Green, and Longmans, 1845 - 427 pages |
From inside the book
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Page ix
... extremities of the diameter of any projected circle from the centre of the primitive are equal to the tangents of half the arcs which measure the least and greatest distances of the circle from that pole of the primitive which is ...
... extremities of the diameter of any projected circle from the centre of the primitive are equal to the tangents of half the arcs which measure the least and greatest distances of the circle from that pole of the primitive which is ...
Page 2
... extremities are designated , respectively , the zenith and nadir . Every plane which may be conceived to pass through this line is said to be a vertical plane , but that which is at right angles to the plane of the meridian is called ...
... extremities are designated , respectively , the zenith and nadir . Every plane which may be conceived to pass through this line is said to be a vertical plane , but that which is at right angles to the plane of the meridian is called ...
Page 3
... extremity . 5. The stars appearing to be at the same distance from the spectator , they are , for convenience , imagined to be attached to the concave surface of a hollow sphere of which his eye is the centre ; and hence the general ...
... extremity . 5. The stars appearing to be at the same distance from the spectator , they are , for convenience , imagined to be attached to the concave surface of a hollow sphere of which his eye is the centre ; and hence the general ...
Page 7
... extremity in the heavens is called the point of the vernal equinox . If planes pass through PQ they will be perpendi- cular to the equator , and their circumferences in the celestial sphere form what are called circles of declination ...
... extremity in the heavens is called the point of the vernal equinox . If planes pass through PQ they will be perpendi- cular to the equator , and their circumferences in the celestial sphere form what are called circles of declination ...
Page 9
... extremity in the heavens is called the point of the vernal equinox . If planes pass through PQ they will be perpendi- cular to the equator , and their circumferences in the celestial sphere form what are called circles of declination ...
... extremity in the heavens is called the point of the vernal equinox . If planes pass through PQ they will be perpendi- cular to the equator , and their circumferences in the celestial sphere form what are called circles of declination ...
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Other editions - View all
Practical Astronomy and Geodesy: Including the Projections of the ..., Volume 5 John Narrien No preview available - 2016 |
Common terms and phrases
angular distance apparent ascension and declination astronomical azimuth bisected celestial body celestial sphere centre circle passing circumference colatitude computed considered correction corresponding cosine cotan degrees described determined diameter difference earth ecliptic ellipse equal equator equatorial equinoctial point expressed fixed star formula geocentric given graduation Greenwich Greenwich mean horary motions horizontal parallax hour angle index error instant instrument interval latitude latter let fall limb longitude mean noon meridian micrometer moon moon's Nautical Almanac node observed altitude obtained optical axis orbit parallax parallel perihelion perpendicular plane passing polar distance pole position projection radius refraction represented revolution revolve right angles right ascension satellite screw sector semidiameter side sidereal sidereal clock sine sphere spherical triangle star's station subtended subtracted supposed surface tangent transit telescope true variation vertical wire zenith distance zero
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