Practical Astronomy and Geodesy: including the projections of the Sphere and Spherical TrigonometryLongman, Brown, Green and Longmans, 1845 |
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Page xi
... corresponding arc on a great circle parallel to it ; and the converse 71. Two great circles making with each other a small angle at their line of section , and from a point in one of these an arc of a great circle being let fall ...
... corresponding arc on a great circle parallel to it ; and the converse 71. Two great circles making with each other a small angle at their line of section , and from a point in one of these an arc of a great circle being let fall ...
Page xix
... corresponding to a given anomaly 204 268. In any parabola the angular velocity varies inversely as the square as the radius vector 269. Nature of the observations to be made for determining the elements of a comet's orbit · • 205 270 ...
... corresponding to a given anomaly 204 268. In any parabola the angular velocity varies inversely as the square as the radius vector 269. Nature of the observations to be made for determining the elements of a comet's orbit · • 205 270 ...
Page xxiii
... 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. Method of finding the error of a ...
... 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. Method of finding the error of a ...
Page xxvii
... corresponding portion of the parallel circle · 390 420. ( Prop . IX . ) To investigate an expression for the length of a meridional arc on the terrestrial spheroid ; having , by ob- servation , the latitudes of the extreme points , with ...
... corresponding portion of the parallel circle · 390 420. ( Prop . IX . ) To investigate an expression for the length of a meridional arc on the terrestrial spheroid ; having , by ob- servation , the latitudes of the extreme points , with ...
Page 12
... corresponding positions on the latter ; and so that with proper scales , when approximative determinations will suffice for the purpose contemplated , the values of the arcs and angles may be easily ascertained . 23. These are called ...
... corresponding positions on the latter ; and so that with proper scales , when approximative determinations will suffice for the purpose contemplated , the values of the arcs and angles may be easily ascertained . 23. These are called ...
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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