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 vi
... observed with tole- rable accuracy , and confequently the longitude afcertain- ed from fuch obfervations , they ought never to be neglect- ed , when the ship is not in fight of land , or upon an un- known coaft . The calculations ...
... observed with tole- rable accuracy , and confequently the longitude afcertain- ed from fuch obfervations , they ought never to be neglect- ed , when the ship is not in fight of land , or upon an un- known coaft . The calculations ...
Σελίδα viii
... observed altitude of any celestial object , in order to reduce it to the true altitude . In book third is contained a complete fyftem of lunar obfervations , with an introductory account of this me- thod of finding the longitude at fea ...
... observed altitude of any celestial object , in order to reduce it to the true altitude . In book third is contained a complete fyftem of lunar obfervations , with an introductory account of this me- thod of finding the longitude at fea ...
Σελίδα x
... observed are marked in the following table of errata - which , it is intreated , the reader will be pleafed to correct . ERRAT A. Page 7 line 31 for - 23 ( fig . 3 ) 15o 46 ' 45 " fecant as are read are as 14 ( fig . 4 ) 56 - 28 15 ° 36 ...
... observed are marked in the following table of errata - which , it is intreated , the reader will be pleafed to correct . ERRAT A. Page 7 line 31 for - 23 ( fig . 3 ) 15o 46 ' 45 " fecant as are read are as 14 ( fig . 4 ) 56 - 28 15 ° 36 ...
Σελίδα xi
... observed distance between two objects 56 BOOK III . Of the method of finding the Longitude of a Ship by Lu- nar Obfervations . CHAP . I. Introduction to this method of finding the Longitude64 II . Preparatory Problems III . Of the ...
... observed distance between two objects 56 BOOK III . Of the method of finding the Longitude of a Ship by Lu- nar Obfervations . CHAP . I. Introduction to this method of finding the Longitude64 II . Preparatory Problems III . Of the ...
Σελίδα 3
... observed the ap- parent meridian altitude of the fun , at the time of the fummer folftice , near the Tower of London ; and June 11 , O. S. 1635 , he observ- ed the fun's apparent meridian altitude , near the middle of the city of York ...
... observed the ap- parent meridian altitude of the fun , at the time of the fummer folftice , near the Tower of London ; and June 11 , O. S. 1635 , he observ- ed the fun's apparent meridian altitude , near the middle of the city of York ...
Άλλες εκδόσεις - Προβολή όλων
The Theory And Practice Of Finding The Longitude At Sea Or Land Andrew MacKay Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
The Theory and Practice of Finding the Longitude at Sea Or Land Andrew MacKay Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2015 |
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