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 92
... latitude 43 ° , taken as a courfe , in a traverse table , and departure 13.7 in a lat . column , the distance is 19 m . which is therefore the difference of longitude . La- Diff . of latitude Latitude at noon 43 ° 12 ( 92 )
... latitude 43 ° , taken as a courfe , in a traverse table , and departure 13.7 in a lat . column , the distance is 19 m . which is therefore the difference of longitude . La- Diff . of latitude Latitude at noon 43 ° 12 ( 92 )
Σελίδα 93
... Diff . of latitude Latitude at noon 43 ° 12 ' N. Long . at noon 18 N. Difference of longitude , 18 ° 20 ' N. 19 E. Prefent latitude 43 Alt . Sun's 1. limb 22 Semidiameter Dip and refract . - 6 30 N. 51 + 16 Long . at time of obferv ...
... Diff . of latitude Latitude at noon 43 ° 12 ' N. Long . at noon 18 N. Difference of longitude , 18 ° 20 ' N. 19 E. Prefent latitude 43 Alt . Sun's 1. limb 22 Semidiameter Dip and refract . - 6 30 N. 51 + 16 Long . at time of obferv ...
Σελίδα 105
... Diff . of app . right af . 1 = App . dec . of Vega = of Altair = 10 44 17 ° 41 ' Co - fecant 44 = 17 ° 38 ° 36 ′ 0 ′′ 0.517475 8 1950 Co - tangent Tangent · 0.09,840 - 9.165627 60387 - 9.780942 Difference of right afc . 17 41 o N. co ...
... Diff . of app . right af . 1 = App . dec . of Vega = of Altair = 10 44 17 ° 41 ' Co - fecant 44 = 17 ° 38 ° 36 ′ 0 ′′ 0.517475 8 1950 Co - tangent Tangent · 0.09,840 - 9.165627 60387 - 9.780942 Difference of right afc . 17 41 o N. co ...
Σελίδα 108
... Diff . = 56 ′ 56 ′′ Half = 28 ′ 28 ′′ In deg . 7 ° 7'arc 1ft 12 ° 13 ′ 11 29 42 Diff . = 40 48 " Half - 20 24 In deg . 5 6 arc 2d = arc 3d , Alt.21 ° 11 N. fine 36135 II 26 - 8.94887 24 40 N. fine 41734 diff . = 7702 = arc fourth . o N ...
... Diff . = 56 ′ 56 ′′ Half = 28 ′ 28 ′′ In deg . 7 ° 7'arc 1ft 12 ° 13 ′ 11 29 42 Diff . = 40 48 " Half - 20 24 In deg . 5 6 arc 2d = arc 3d , Alt.21 ° 11 N. fine 36135 II 26 - 8.94887 24 40 N. fine 41734 diff . = 7702 = arc fourth . o N ...
Σελίδα 112
... Diff . = 786111 log . 5.895484 Os alt . 5.890107 = + I 40 N. No.776440 Diff . true alt . 21 19 6N.V.S. = 68425 True dift . 81 4 31 N.V.S.844865 II . Let the apparent distance between the centers of the Sun and Moon be 72 ° 21 ' 40 ...
... Diff . = 786111 log . 5.895484 Os alt . 5.890107 = + I 40 N. No.776440 Diff . true alt . 21 19 6N.V.S. = 68425 True dift . 81 4 31 N.V.S.844865 II . Let the apparent distance between the centers of the Sun and Moon be 72 ° 21 ' 40 ...
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