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 |
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Page xiii
... directions of a pencil of light reflected from two mirrors is equal to twice the inclination of the mirrors 133. Employment of the visible horizon , and the image of a celestial body reflected from quicksilver , as objects in observing ...
... directions of a pencil of light reflected from two mirrors is equal to twice the inclination of the mirrors 133. Employment of the visible horizon , and the image of a celestial body reflected from quicksilver , as objects in observing ...
Page xxii
... being given.- Example , from an observed altitude of the sun - 341. Method of finding the direction of a meridian line on the 263 263 264 266 268 269 270 272 276 277 Art . Page ground by the azimuths of the sun xxii CONTENTS .
... being given.- Example , from an observed altitude of the sun - 341. Method of finding the direction of a meridian line on the 263 263 264 266 268 269 270 272 276 277 Art . Page ground by the azimuths of the sun xxii CONTENTS .
Page xxiii
... direction of a meridian line by equal altitudes of the sun with the corresponding azimuths . - Example 348. Method of finding the time of apparent noon from equal al- titudes of the sun , the ship changing its place in the in- terval ...
... direction of a meridian line by equal altitudes of the sun with the corresponding azimuths . - Example 348. Method of finding the time of apparent noon from equal al- titudes of the sun , the ship changing its place in the in- terval ...
Page 2
... direction about the spectator , may be considered as coincident with that surface , is called a meridian line : of this line , the extremity which is nearest to the Arctic regions of the earth is called the north point , and that which ...
... direction about the spectator , may be considered as coincident with that surface , is called a meridian line : of this line , the extremity which is nearest to the Arctic regions of the earth is called the north point , and that which ...
Page 3
... direction will be sensibly increased : the distance will go on continually increasing and , in about a B 2 СНАР . І. 3 MOTIONS OF THE SUN AND MOON . Diurnal movements of the stars, as they would appear to spectator when proceeding from ...
... direction will be sensibly increased : the distance will go on continually increasing and , in about a B 2 СНАР . І. 3 MOTIONS OF THE SUN AND MOON . Diurnal movements of the stars, as they would appear to spectator when proceeding from ...
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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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