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
... equal , which is contrary to obfervation ; the figure of the Earth therefore is fpherical . II . LEMMATA . - ft . The diftance of the neareft fixed ftar , when compared with the magnitude of the Earth , is fo immenfe , that rays flowing ...
... equal , which is contrary to obfervation ; the figure of the Earth therefore is fpherical . II . LEMMATA . - ft . The diftance of the neareft fixed ftar , when compared with the magnitude of the Earth , is fo immenfe , that rays flowing ...
Σελίδα 4
... equal to 107 English feet , and 880 fathoms are contained in an English mile , therefore the cir- cumference of the Earth , expreffed in English miles , is equal to 57069X114 × 360 ° __ 57069 × 57 × 9 . 107 × 880 = 107XII 24873. Hence ...
... equal to 107 English feet , and 880 fathoms are contained in an English mile , therefore the cir- cumference of the Earth , expreffed in English miles , is equal to 57069X114 × 360 ° __ 57069 × 57 × 9 . 107 × 880 = 107XII 24873. Hence ...
Σελίδα 5
... equal parts , called Hemifpheres ; that having the North Pole in its center is called the Northern Hemifphere , and the other the Southern He- mifphere . The plane of this circle being produced to the fixed stars , will point out the ...
... equal parts , called Hemifpheres ; that having the North Pole in its center is called the Northern Hemifphere , and the other the Southern He- mifphere . The plane of this circle being produced to the fixed stars , will point out the ...
Σελίδα 6
... equal to the difference or fum of their latitudes , according as the given places are in the fame , or contrary hemifpheres . Again , let PRP be the first meridian , then the arch of the equator RF con- tained between the first meridian ...
... equal to the difference or fum of their latitudes , according as the given places are in the fame , or contrary hemifpheres . Again , let PRP be the first meridian , then the arch of the equator RF con- tained between the first meridian ...
Σελίδα 7
... equal parts , called SIGNS ; each fign therefore contains 30 ° . The names and characters of these figns as are follow . Aries , ရာ Cancer , Taurus , 8 Leo , Libra , Scorpio , m Virgo , my Sagittarius , ↑ Capricornus , o Aquarius ...
... equal parts , called SIGNS ; each fign therefore contains 30 ° . The names and characters of these figns as are follow . Aries , ရာ Cancer , Taurus , 8 Leo , Libra , Scorpio , m Virgo , my Sagittarius , ↑ Capricornus , o Aquarius ...
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