Elements of surveying and navigation : with a description of the instruments and the necessary tables (1847)
Davies, Charles, 1798-1876 · New York : A.S. Barnes & Co. · leaf 184
West of North. Dist. 94.6 miles. These examples will, perhaps, suffice to illustrate the princ»pies of plane sailing. The longitude, made on any course, cannot be determined bythese methods, for this being the arc of the equator interceptedbetween two meridians, cannot be found under the… … Parallel Sailinsc. 16. The entire theory of parallel sailing is comprehended inthe following proposition, viz. The cosine of the latitude of the parallel, is to the distancerurif as radius to the difference of longitude. Let JQ/f represent the equa-tor, and FDN any parallel oflatitude: then, CI…
Surveying · Navigation
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-64-40.webp)
