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 xi
... sidereal clock . Its adjustments for the purpose of in- dicating the commencement of the sidereal day , the right ascension of the mid - heaven , and of a star 74. Description of the micrometer · 60 61 75. Determination of the value of ...
... sidereal clock . Its adjustments for the purpose of in- dicating the commencement of the sidereal day , the right ascension of the mid - heaven , and of a star 74. Description of the micrometer · 60 61 75. Determination of the value of ...
Page xv
... sidereal clock 173. Determination of the instant that the sun is in the equi- noctial point , by trigonometry 174. Precession of the equinoxes : lengths of the tropical and si- dereal years - 175. Manner of finding the obliquity of the ...
... sidereal clock 173. Determination of the instant that the sun is in the equi- noctial point , by trigonometry 174. Precession of the equinoxes : lengths of the tropical and si- dereal years - 175. Manner of finding the obliquity of the ...
Page xxi
... sidereal day , and definition of sidereal time 304. Error and rate of a sidereal clock found by the observed ... sidereal day · 236 307. Lengths of a lunar , and of a planetary day 308. Reduction of mean sidereal , to mean solar time ...
... sidereal day , and definition of sidereal time 304. Error and rate of a sidereal clock found by the observed ... sidereal day · 236 307. Lengths of a lunar , and of a planetary day 308. Reduction of mean sidereal , to mean solar time ...
Page 60
... SIDEREAL CLOCK . - MURAL CIRCLE . - MICROMETER . - TRANSIT INSTRUMENT . AZIMUTH AND ALTITUDE CIRCLE . ZENITH COLLIMATOR . - REPEAT- SECTOR . -EQUATORIAL INSTRUMENT . ING CIRCLE . - REFLECTING INSTRUMENTS . 72. THE longitudes and ...
... SIDEREAL CLOCK . - MURAL CIRCLE . - MICROMETER . - TRANSIT INSTRUMENT . AZIMUTH AND ALTITUDE CIRCLE . ZENITH COLLIMATOR . - REPEAT- SECTOR . -EQUATORIAL INSTRUMENT . ING CIRCLE . - REFLECTING INSTRUMENTS . 72. THE longitudes and ...
Page 61
... clock having its circumference divided into twenty - four equal parts , the hour- hand is made to indicate xxiv , or 0 hours at the instant that the first point of Aries is in the meridian ; and if the clock were duly ... SIDEREAL CLOCK .
... clock having its circumference divided into twenty - four equal parts , the hour- hand is made to indicate xxiv , or 0 hours at the instant that the first point of Aries is in the meridian ; and if the clock were duly ... SIDEREAL CLOCK .
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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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