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
... proportional to the correspond- ent angles , it is a circle . Now , if the Earth was an extended plane , the meridian zenith diftance of any given fixed star would be the fame in all places of the Earth , by lemma 1ft ; but it is found ...
... proportional to the correspond- ent angles , it is a circle . Now , if the Earth was an extended plane , the meridian zenith diftance of any given fixed star would be the fame in all places of the Earth , by lemma 1ft ; but it is found ...
Σελίδα 16
... proportional to the receffion of the equinoxes in that interval . The time when an inferior planet is in its node is most accurately deter- mined by obferving its tranfit over the Sun ; and that of a fuperior planet , when in oppofition ...
... proportional to the receffion of the equinoxes in that interval . The time when an inferior planet is in its node is most accurately deter- mined by obferving its tranfit over the Sun ; and that of a fuperior planet , when in oppofition ...
Σελίδα 19
... proportional to the fquares of their diameters , therefore as the earth is much greater than the moon , the quantity of light reflected by the earth to the moon is fo confiderable , as to render the dark part visible . The interval of ...
... proportional to the fquares of their diameters , therefore as the earth is much greater than the moon , the quantity of light reflected by the earth to the moon is fo confiderable , as to render the dark part visible . The interval of ...
Σελίδα 49
... proportional logarithm of the error found as above , the proportional logarithm of the error anfwering to the given dift- ance from col . 4. tab . xxi . and the arithmetical complement of the proportional logarithm of the error ...
... proportional logarithm of the error found as above , the proportional logarithm of the error anfwering to the given dift- ance from col . 4. tab . xxi . and the arithmetical complement of the proportional logarithm of the error ...
Σελίδα 55
... proportional lo- garithm of the interval of time between the obfervations of the al- titude and distance ; the fum , rejecting radius , will be the propor- tional logarithm of the correfponding change of altitude . If the Sun is near ...
... proportional lo- garithm of the interval of time between the obfervations of the al- titude and distance ; the fum , rejecting radius , will be the propor- tional logarithm of the correfponding change of altitude . If the Sun is near ...
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