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 2
... Hence the Earth muft either be of a cylindric or globular figure ; but it cannot be in the form of a cylinder , because then the difference of longitude and meridian diftance between any two places would be equal , which is contrary to ...
... Hence the Earth muft either be of a cylindric or globular figure ; but it cannot be in the form of a cylinder , because then the difference of longitude and meridian diftance between any two places would be equal , which is contrary to ...
Σελίδα 4
... Hence alfo one de- gree contains about 69.09 English miles , and a nautical or geogra- phical mile contains 6080 feet . For the purpose of ascertaining the distance run by a ship in any given time , a half minute glafs is commonly used ...
... Hence alfo one de- gree contains about 69.09 English miles , and a nautical or geogra- phical mile contains 6080 feet . For the purpose of ascertaining the distance run by a ship in any given time , a half minute glafs is commonly used ...
Σελίδα 5
... Hence if the places ly between the Equator and the fame pole , their difference of latitude is found by fubtracting the lefs lati- tude from the greater ; but if they ly on oppofite fides of the equa- tor , the difference of latitude is ...
... Hence if the places ly between the Equator and the fame pole , their difference of latitude is found by fubtracting the lefs lati- tude from the greater ; but if they ly on oppofite fides of the equa- tor , the difference of latitude is ...
Σελίδα 7
... a period of the Moon's nodes , the greater axis being in the folftitial colure , and equil to 19.1 , and the leaft axis , in the equinoctial colure , and equal to 14 " .2 . ber ; hence the firft is called the Vernal , ( 7 )
... a period of the Moon's nodes , the greater axis being in the folftitial colure , and equil to 19.1 , and the leaft axis , in the equinoctial colure , and equal to 14 " .2 . ber ; hence the firft is called the Vernal , ( 7 )
Σελίδα 8
... hence the firft is called the Vernal , and the other the Autumn- al equinox , and that fign which begins at the vernal equinox is call- ed Aries . Those points of the ecliptic which are equidistant from the equinoxes , and therefore ...
... hence the firft is called the Vernal , and the other the Autumn- al equinox , and that fign which begins at the vernal equinox is call- ed Aries . Those points of the ecliptic which are equidistant from the equinoxes , and therefore ...
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