Navigation and Nautical Astronomy1861 |
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Page 71
... chronometer , whose error on Greenwich mean time is known . Rule VI . To the time shown by chronometer , apply its ... showed 10h 42m 38 , its error on Greenwich mean time being 2m 10s fast ; required mean time at Greenwich , or the Greenwich ...
... chronometer , whose error on Greenwich mean time is known . Rule VI . To the time shown by chronometer , apply its ... showed 10h 42m 38 , its error on Greenwich mean time being 2m 10s fast ; required mean time at Greenwich , or the Greenwich ...
Page 72
... chronometer showed 3h 23m 15s , and its error on Greenwich mean time was 10m 10s 4 slow ; required the Greenwich date . Greenwich date by chronometer . Aug. 3rd , at 3h 23m 15s Error • • 10 10.4 Aug. 3rd · 3 33 25.4 Add . 12 • Greenwich ...
... chronometer showed 3h 23m 15s , and its error on Greenwich mean time was 10m 10s 4 slow ; required the Greenwich date . Greenwich date by chronometer . Aug. 3rd , at 3h 23m 15s Error • • 10 10.4 Aug. 3rd · 3 33 25.4 Add . 12 • Greenwich ...
Page 96
... chronometer regulated to mean time ; for we have only to note the time shown by the two instruments at the same ... showed 6h 10m 20s a chronometer showed 7h 32m 10s , required the error of the chronometer on Greenwich mean time ; the ...
... chronometer regulated to mean time ; for we have only to note the time shown by the two instruments at the same ... showed 6h 10m 20s a chronometer showed 7h 32m 10s , required the error of the chronometer on Greenwich mean time ; the ...
Page 97
... chronometer showing Greenwich mean time at the instant the mean time at the ship is known . The mean time at the ... show how mean time might be found from it . F Rule XXI . Given , the hour angle of a IN NAUTICAL ASTRONOMY . 97.
... chronometer showing Greenwich mean time at the instant the mean time at the ship is known . The mean time at the ... show how mean time might be found from it . F Rule XXI . Given , the hour angle of a IN NAUTICAL ASTRONOMY . 97.
Page 137
... chronometer showed 11h 50m 22s , error on Greenwich mean time being 40.2s fast , when the observed altitude of the sun's lower limb ( in artificial horizon ) was 101 ° 14 ′ 10 ′′ ( Z. N. ) , index correction + 30 ′′ , required the ...
... chronometer showed 11h 50m 22s , error on Greenwich mean time being 40.2s fast , when the observed altitude of the sun's lower limb ( in artificial horizon ) was 101 ° 14 ′ 10 ′′ ( Z. N. ) , index correction + 30 ′′ , required the ...
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Common terms and phrases
24 hours altitude for index apparent altitude April 27 ascension mean sun astronomical celestial concave celestial equator chro chronometer showed colatitude compass course course and distance decl deviation diff difference of latitude east ecliptic Elements from Nautical find the latitude Greenwich date Greenwich mean noon haversines heavenly body height of eye horizontal parallax hour angle Index cor index correction July June latitude and longitude mean solar mean time nearly miles moon Moon's declination moon's semidiameter Nautical Almanac observed altitude observed meridian altitude P.M. mean Parallel Sailing pass the meridian point of Aries polar distance pole proportional logarithm refraction required the latitude required the longitude required the true Right asc Right ascension mean sea 20 feet ship mean ship's head sidereal spectator star subtract Sun's declination sun's L. L. sun's lower limb true altitude true bearing true course true distance versine zenith distance