Practical Astronomy and Geodesy: including the projections of the Sphere and Spherical TrigonometryLongman, Brown, Green and Longmans, 1845 |
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Page ix
... equal distances , the intercepted arcs are equal 31. ( Prop . VI . ) The projected poles of any circle of the sphere , and the centre of the projection of the same circle , are in the representation of a great circle passing through the ...
... equal distances , the intercepted arcs are equal 31. ( Prop . VI . ) The projected poles of any circle of the sphere , and the centre of the projection of the same circle , are in the representation of a great circle passing through the ...
Page xix
... equal to a given anomaly 262. The laws of Kepler require modification for bodies moving in parabolical orbits 263. In parabolical orbits the squares of the times of describing equal angles , reckoned from the perihelion , vary as the ...
... equal to a given anomaly 262. The laws of Kepler require modification for bodies moving in parabolical orbits 263. In parabolical orbits the squares of the times of describing equal angles , reckoned from the perihelion , vary as the ...
Page xxiii
... 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 between the observations - - 349 ...
... 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 between the observations - - 349 ...
Page 4
... equal to the elevation of that luminary at the noon of the day which is the middle of the interval between mid - winter and mid - summer , or between mid - summer and mid - winter : it may be observed also , that the greatest elevation ...
... equal to the elevation of that luminary at the noon of the day which is the middle of the interval between mid - winter and mid - summer , or between mid - summer and mid - winter : it may be observed also , that the greatest elevation ...
Page 16
... equal to one another , the angle F A N ′ = F M'B . It follows that , in the present case , the products corresponding to those represented by p and q above are equal to one another , and FN . F M ' becomes equal to F G2 , which is a ...
... equal to one another , the angle F A N ′ = F M'B . It follows that , in the present case , the products corresponding to those represented by p and q above are equal to one another , and FN . F M ' becomes equal to F G2 , which is a ...
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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