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 xxvii
... radius and the eccentricity of the meridian - - 391 421. Table of the measured lengths of a degree of latitude in different places . Presumed value of the earth's ellipticity 391 422. The triangles in a geodetical survey gradually ...
... radius and the eccentricity of the meridian - - 391 421. Table of the measured lengths of a degree of latitude in different places . Presumed value of the earth's ellipticity 391 422. The triangles in a geodetical survey gradually ...
Page 13
... radius being considered as unity ) ; and this method , which has been much used in the formation of geographical maps , is sometimes called the Globular pro- jection . The second is that in which the eye is supposed to be infinitely ...
... radius being considered as unity ) ; and this method , which has been much used in the formation of geographical maps , is sometimes called the Globular pro- jection . The second is that in which the eye is supposed to be infinitely ...
Page 14
... radius of the primitive circle . PROPOSITION I. 25. In any projection , if the plane of a circle of the sphere pass through the projecting point or the eye of the spectator , the representation of its circumference on the plane of ...
... radius of the primitive circle . PROPOSITION I. 25. In any projection , if the plane of a circle of the sphere pass through the projecting point or the eye of the spectator , the representation of its circumference on the plane of ...
Page 21
... VII . 32. The radius of the circle constituting the projection of a great circle of the sphere which does not pass through the projecting point , is equal to the secant of C 3 CHAP . II . 21 STEREOGRAPHICAL PROJECTION .
... VII . 32. The radius of the circle constituting the projection of a great circle of the sphere which does not pass through the projecting point , is equal to the secant of C 3 CHAP . II . 21 STEREOGRAPHICAL PROJECTION .
Page 22
... radius CP being supposed to be unity . Therefore , & c . Scholium . The line CD is evidently equal to the tangent of the inclination . PROPOSITION VIII . 33. The distances of the extremities of the diameter of any projected circle of ...
... radius CP being supposed to be unity . Therefore , & c . Scholium . The line CD is evidently equal to the tangent of the inclination . PROPOSITION VIII . 33. The distances of the extremities of the diameter of any projected circle of ...
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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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