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
... known - 394 425. ( Prob . II . ) To determine the position of an object , when there have been observed the angles contained between lines imagined to be drawn from it to three stations whose mutual distances are known . Use of the ...
... known - 394 425. ( Prob . II . ) To determine the position of an object , when there have been observed the angles contained between lines imagined to be drawn from it to three stations whose mutual distances are known . Use of the ...
Page 4
... known that the sun's angular elevation above the horizon at noon experiences , from mid - winter to mid- summer , a continual increase , and , from mid - summer to mid- winter , a continual decrease . Now , by observing what groups of ...
... known that the sun's angular elevation above the horizon at noon experiences , from mid - winter to mid- summer , a continual increase , and , from mid - summer to mid- winter , a continual decrease . Now , by observing what groups of ...
Page 7
... , Bb and вn being known , S the angles Aam , вbn may be computed . B 4 СНАР . І. 7 MAGNITUDE OF THE EARTH . The orbits of the earth and moon are differently inclined a plane which is perpendicular to the axis of the earth's rotation.
... , Bb and вn being known , S the angles Aam , вbn may be computed . B 4 СНАР . І. 7 MAGNITUDE OF THE EARTH . The orbits of the earth and moon are differently inclined a plane which is perpendicular to the axis of the earth's rotation.
Page 13
... known long before his time : it was subsequently called the Stereo- graphical Projection , from a word signifying the repre- sentation of a solid body . A modification of this projection was made by La Hire , in supposing the eye of the ...
... known long before his time : it was subsequently called the Stereo- graphical Projection , from a word signifying the repre- sentation of a solid body . A modification of this projection was made by La Hire , in supposing the eye of the ...
Page 49
... known terms is , of course , that angle . Therefore , omitting for the present any notice of the right angle among the data , it may be said that in right - angled spherical triangles two terms are given to find a third . Now the three ...
... known terms is , of course , that angle . Therefore , omitting for the present any notice of the right angle among the data , it may be said that in right - angled spherical triangles two terms are given to find a third . Now the three ...
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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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