The Theory and Practice of Finding the Longitude at Sea Or Land: To which are Added, Various Methods of Determining the Latitude of a Place, and Variation of the Compass; with New Tables. By Andrew Mackay, ...J. Sewell, P. Elmsly, and J. Evans, 1793 |
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Σελίδα 19
... femidiameters of the Moon , and that fection of the Earth's fhadow thro ' which the moon paffes ; and if at the time of oppofition , the moon's latitude is lefs than the difference between its femidiameter , and that of the fhadow , the ...
... femidiameters of the Moon , and that fection of the Earth's fhadow thro ' which the moon paffes ; and if at the time of oppofition , the moon's latitude is lefs than the difference between its femidiameter , and that of the fhadow , the ...
Σελίδα 20
... femidiameters of the Sun and Moon , and therefore if the Moon's latitude exceeds this laft fum , no part of the Earth can be cclipfed , but if lefs , the eclipfe may be total or annular at one place , partial at a fecond , and at a ...
... femidiameters of the Sun and Moon , and therefore if the Moon's latitude exceeds this laft fum , no part of the Earth can be cclipfed , but if lefs , the eclipfe may be total or annular at one place , partial at a fecond , and at a ...
Σελίδα 21
... femidiameter and horizontal parallax , at noon and midnight , in page vII . and its diftance from the Sun and proper stars , at every third hour by the meridian of Greenwich , are contained in pages VIII . IX . X. XI . of the month ...
... femidiameter and horizontal parallax , at noon and midnight , in page vII . and its diftance from the Sun and proper stars , at every third hour by the meridian of Greenwich , are contained in pages VIII . IX . X. XI . of the month ...
Σελίδα 56
... femidiameter of the Sun is given in the Nautical Almanac , page 111. of the month for the noon of every fixth day , and that of the Moon in page vII . to the time of noon and midnight , by the meridian of Greenwich . These femidiameters ...
... femidiameter of the Sun is given in the Nautical Almanac , page 111. of the month for the noon of every fixth day , and that of the Moon in page vII . to the time of noon and midnight , by the meridian of Greenwich . These femidiameters ...
Σελίδα 57
... femidiameter may be taken from the Nautical Almanac to the nearest tenth of a minute . But when altitudes are ... femidiameter of the first must be added to , and that of the fecond fubtracted from the obferved distance . If the distance ...
... femidiameter may be taken from the Nautical Almanac to the nearest tenth of a minute . But when altitudes are ... femidiameter of the first must be added to , and that of the fecond fubtracted from the obferved distance . If the distance ...
Άλλες εκδόσεις - Προβολή όλων
The Theory and Practice of Finding the Longitude at Sea Or Land: To Which ... Andrew MacKay Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2015 |
The Theory And Practice Of Finding The Longitude At Sea Or Land Andrew MacKay Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
Συχνά εμφανιζόμενοι όροι και φράσεις
Aberdeen add the log adjuſtment alfo alſo anfwering angle apparent altitude apparent diſtance arc fecond arc firft arch Arcturus arifing azimuth becauſe cafe co-fecant co-fine co-tangent Co-verfed computing correction correfponding courſe degrees Diff dift divifion Earth ecliptic emerfion equal altitudes equation error fame fecant feen femidiameter fextant fhip fhould figns fince finding the Longitude firſt Fixed Star folar ftar fubtract given glaſs greateſt Greenwich half Hence horizon glafs horizontal parallax increaſe inftrument interfection interval laſt latitude lefs limb logarithm mean meaſured meridian method Moon moſt motion muſt Nautical Almanac neareſt neceffary nonagefimal noon obferved altitude object Obliq paffing place of obfervation planet pofition purpoſe quadrant reduced Reduced latitude refraction Rifing ſhip ſtar Sun's right afcenfion tangent teleſcope thefe theſe tion tranfit true altitude true diſtance true longitude tude uſed variation Verfed Verfed fine watch weft zenith diſtance ΙΟ