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 |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 8.
Σελίδα 10
... angle of the Diagram is fitted a moveable INDEX ; one edge of which ( that which coin- cides with the pivot on which it moves ) is graduated to the equal parts of the sides . 12. From the centre angle ... an arc of expanded degrees of ...
... angle of the Diagram is fitted a moveable INDEX ; one edge of which ( that which coin- cides with the pivot on which it moves ) is graduated to the equal parts of the sides . 12. From the centre angle ... an arc of expanded degrees of ...
Σελίδα 11
... DEGREES OF LATITUDE . Their several uses will be hereinafter explained . 16. By a vernier fixed to the index the tenths of degrees may be subdivided into minutes .. At each end of the main arc is an arc of excess . 17. For permanent use ...
... DEGREES OF LATITUDE . Their several uses will be hereinafter explained . 16. By a vernier fixed to the index the tenths of degrees may be subdivided into minutes .. At each end of the main arc is an arc of excess . 17. For permanent use ...
Σελίδα 15
... trigonometry is , that on all oblique courses the distance , the difference of ... angle in a semi - circle is a right - angle , so will the two sides made by the difference of lati- tude and the departure be exactly contained within the arc ...
... trigonometry is , that on all oblique courses the distance , the difference of ... angle in a semi - circle is a right - angle , so will the two sides made by the difference of lati- tude and the departure be exactly contained within the arc ...
Σελίδα 40
... angle ; and the point of intersection is called the angular point , or the summit , or vertex of the angle ; and it always rep- resents the centre of a circle ... arc of a circle des- cribed about the angular point . 151. If two right lines ...
... angle ; and the point of intersection is called the angular point , or the summit , or vertex of the angle ; and it always rep- resents the centre of a circle ... arc of a circle des- cribed about the angular point . 151. If two right lines ...
Σελίδα 42
... 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 is what the arc or angle ...
... 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 is what the arc or angle ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
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