| John Mason Good - 1819 - 742 pages
...others, have reckoned the fx5¡ astronomical method for finding the longitude n sea, to be that in which the distance of the moon from the sun or from a star is used ; for the moon's daily motion being about 13 degrees, her hourly mean motion is above half... | |
| Conrad Malte-Brun - 1827 - 564 pages
...I Uleof chro. which serve in the intervals during which observations of the distance | "o">eier». of the moon from the sun, or from a star, cannot be...remain exactly the same during the whole continuance of * Zach, Correspond, i. 73. note. \ Rcssft, Voyage d'Entrecasteaux, ii. 244. T They who wish to become... | |
| Conrad Malte-Brun - 1829 - 552 pages
...икоГеЬгоwhich serve in the intervals during which observations of the distance | »»гавев. of the. moon from the sun, or from a star, cannot...their motion would remain exactly the same during tho wholo continuance of • Zach, Correspond, i. 73. note. f Jiotsel, Voyage d'Entrecasteaux, ¡i.... | |
| Davies Gilbert - 1838 - 448 pages
...two objects, independent of all agitations of the instrument itself, enabled observers to ascertain the distance of the moon from the sun, or from a star, almost as accurately on board a ship as on the solid land. With these assistances the determination... | |
| System - 1842 - 894 pages
...sea. To lunar observations, however, it is necessary to join the use of chronometers, or lime-keepers, which serve in the intervals during which observations...them with such accuracy, that when once regulated to mean time under a given meridian, their motion would remain exactly the same during the whole continuance... | |
| James Laurie - 1842 - 1098 pages
...sea. To lunar observations, however, it is necessary to join the use of chronometers, or time-keepers, which serve in the intervals during which observations of the distance of the uioon from the sun, or from a star, cannot be obtained. These instruments would alone accomplish the... | |
| Alexander Baharie - 1844 - 218 pages
...superseded all the other methods. To lunar observations, however, is joined the use of timekeepers, which serve in the intervals during which observations...the same during the whole continuance of the voyage ; for they would then at all times point out the hour under the said meridian. Even to the present... | |
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