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 x
... Subtraction . Multiplication . Divifion . The Square Root , Conjunction . Oppofition . The planetary characters are also used to represent the days of the week - thus , O denotes Sunday , Wednesday , Saturday , > Monday , Tuesday ...
... Subtraction . Multiplication . Divifion . The Square Root , Conjunction . Oppofition . The planetary characters are also used to represent the days of the week - thus , O denotes Sunday , Wednesday , Saturday , > Monday , Tuesday ...
Σελίδα 86
... subtracted from , the time of noon formerly found , according as the fhip's latitude is increafing or diminishing , and the fecond correction is additive or fubtractive , according as the fhip's courfe has been in the eastern or western ...
... subtracted from , the time of noon formerly found , according as the fhip's latitude is increafing or diminishing , and the fecond correction is additive or fubtractive , according as the fhip's courfe has been in the eastern or western ...
Σελίδα 94
... subtraction or addition , according as the latitude and declination are of the fame or of contrary names . Now find the above difference or fum in table xxix . and the corresponding time will be the distance of the object from the ...
... subtraction or addition , according as the latitude and declination are of the fame or of contrary names . Now find the above difference or fum in table xxix . and the corresponding time will be the distance of the object from the ...
Σελίδα 116
... subtracted from the corrected diftance , according as it is lefs or greater than 90 ° , and the true distance between the Moon and a ftar will be obtained . But if the object with which the Moon is compared be the Sun , another ...
... subtracted from the corrected diftance , according as it is lefs or greater than 90 ° , and the true distance between the Moon and a ftar will be obtained . But if the object with which the Moon is compared be the Sun , another ...
Σελίδα 146
... subtract it , and the fum or remainder will be the true longitude of the Moon . REMARK . It will be fufficient in moft cafes to take out the lati- tudes of the Moon and ftar to the nearest minute . EXAMPLE . α Let the true distance ...
... subtract it , and the fum or remainder will be the true longitude of the Moon . REMARK . It will be fufficient in moft cafes to take out the lati- tudes of the Moon and ftar to the nearest minute . EXAMPLE . α Let the true 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