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 xi
... telescope - 858 *** 0 8 8 62 63 - 63 64 64 64 65 66 82. The fixed wires at the focus of the object glass , and the man- ner of enlightening them at night - 83. The attached circle for obtaining altitudes approximatively 84. Description ...
... telescope - 858 *** 0 8 8 62 63 - 63 64 64 64 65 66 82. The fixed wires at the focus of the object glass , and the man- ner of enlightening them at night - 83. The attached circle for obtaining altitudes approximatively 84. Description ...
Page xii
... telescope very near the plane of the meridian - 95. Investigation of a formula for finding the azimuthal deviation of a transit telescope from the meridian , by stars differing considerably in altitude 96. The same , by transits of ...
... telescope very near the plane of the meridian - 95. Investigation of a formula for finding the azimuthal deviation of a transit telescope from the meridian , by stars differing considerably in altitude 96. The same , by transits of ...
Page 6
... telescope , seen to pass like dark spots across the disk of the sun ; the telescope moreover shows that each of these , like the moon , assumes the form of a crescent , a semi- circle , an ellipse , and nearly a complete circle ; the ...
... telescope , seen to pass like dark spots across the disk of the sun ; the telescope moreover shows that each of these , like the moon , assumes the form of a crescent , a semi- circle , an ellipse , and nearly a complete circle ; the ...
Page 7
... telescope shows that their disks are nearly circular , or segments of circles , and from the move- ments of the spots which have been observed on most of their surfaces , it is inferred that they are globular bodies , which , like the ...
... telescope shows that their disks are nearly circular , or segments of circles , and from the move- ments of the spots which have been observed on most of their surfaces , it is inferred that they are globular bodies , which , like the ...
Page 7
... telescope , present the appearance of well - defined disks , subtending , at the eye of the spectator , angles of sensible magnitude , while the stars called fixed , though examined with the most powerful instruments , are seen only as ...
... telescope , present the appearance of well - defined disks , subtending , at the eye of the spectator , angles of sensible magnitude , while the stars called fixed , though examined with the most powerful instruments , are seen only as ...
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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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