Description and Use of a Diagram of Navigation: By which All Problems in Plane, Traverse, Parallel, Middle Latitude and Mercator's Sailing May be Instantly and Accurately Resolved. Adapted to the Capacity of All who Know the Use of Figures. Designed as an Easy Introduction, by Sensible Demonstration, to the Principles, and the Practice of Navigation. With a Diagram EngravedFellowes & Simpson, 1822 - 4 σελίδες |
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Σελίδα 5
... equal to twice the radius ; from which is this rule , Rad .: mer . dist . :: sec . of lat .: diff . of lon . In publishing the remarks which accompany the Di- agram , after the description and use , my original inten- tion was to have ...
... equal to twice the radius ; from which is this rule , Rad .: mer . dist . :: sec . of lat .: diff . of lon . In publishing the remarks which accompany the Di- agram , after the description and use , my original inten- tion was to have ...
Σελίδα 9
... radius . 4. It is in the form of a Quadrant , or quarter circle , and exhibits a series of right - angled plane ... equal parts ; to which parts are drawn lines parallel to the sides ; which lines , 2 intersecting at right angles , form ...
... radius . 4. It is in the form of a Quadrant , or quarter circle , and exhibits a series of right - angled plane ... equal parts ; to which parts are drawn lines parallel to the sides ; which lines , 2 intersecting at right angles , form ...
Σελίδα 26
... radius to the cosine of the latitude . 93. In order therefore to represent the true course between two places , the degrees of latitude are also artificially expanded , and in the ratio of the secant of the latitude to radius . 94. The ...
... radius to the cosine of the latitude . 93. In order therefore to represent the true course between two places , the degrees of latitude are also artificially expanded , and in the ratio of the secant of the latitude to radius . 94. The ...
Σελίδα 41
... equal parts . For the purposes of astrono- my , navigation and surveying ... RADIUS of a circle is a right line drawn from the centre to the ... equal to twice.
... equal parts . For the purposes of astrono- my , navigation and surveying ... RADIUS of a circle is a right line drawn from the centre to the ... equal to twice.
Σελίδα 42
... equal to twice the radius . 166. An ARC is any portion of the circumference , and is the measure of the angle comprised by two radii , drawn from the centre , one to each extremity of the arc . 167. The COMPLEMENT of an arc , or angle ...
... equal to twice the radius . 166. An ARC is any portion of the circumference , and is the measure of the angle comprised by two radii , drawn from the centre , one to each extremity of the arc . 167. The COMPLEMENT of an arc , or angle ...
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arc of latitude arc or angle chord circle circumference co-sine co-tangent contiguous angle course 3 points course 3 pts course 38 deg COURSE and DEPARTURE Course and Diff course and distance course sailed curve line departure 84 Diagram of Navigation difference of lati difference of latitude difference of longitude direct course dist DISTANCE and DEPARTURE distance sailed ence of longitude Example Example.-A ship sails find the COURSE find the DISTANCE give the course give the diff give the distance Given both LATITUDES Given-one LATITUDE index remaining index set index to meet meet the difference Mercator's sailing merid meridian distance meridional difference middle lat parallel sailing plane sailing proper diff radius be equal required the course right line drawn right-angled plane triangle Rule Rule.-Set the index secant Set the index ship in lat side as radius side marked equator tance tangent traverse table tude